KR101442189B1 - PSC U girder bridge using segment girder - Google Patents

Abstract

According to the present invention, the PSC U girder is classified into the positive and the negative part segment girders according to the behavior characteristics of the PSC U girder. In the simple bridge, the alternating segment girder and the middle segment girder are constituted. It is possible to construct a segment girder with a short length by constructing a segment girder and a span center segment segment girder or an outer segment segment girder and a span center segment segment girder to construct a segment girder at a construction site. It is not necessary to use large-scale construction equipment by connecting and connecting continuously with small equipment and manpower by placing it on alternation, pier and hypothetical vent, and it is the same as construction process of general PSC U girder. It is also possible to strengthen the connection of the segment girders, The purpose of the PSC U girder bridge is to provide a PSC U girder bridge with a segment girder to improve the safety and efficiency of the PSC U girder.
In order to achieve the above object, a PSC U girder bridge using a segment girder according to the present invention is a simple bridge PSC U girder connecting a PSC U girder segment to constitute a bridge girder, And the center portion segment girder is constructed such that one lateral end portion of the alternating portion segment girder constitutes an alternate fulcrum portion and the other lateral end portion is connected and joined to the central segment girder, In the fulcrum portion, the upper flange of the predetermined section has a closed structure with a step, the slab placed on the upper surface of the closed upper flange is formed to have a thicker section than the other sections, and the lower flange ends A primary PS steel wire fixing part which burden the load of the girder is constituted and is tensioned by the lower edge of the girder, A connecting joint PS steel wire fusing section for connecting and joining the segment girders to the upper surface of the lower flange of the connecting joint portion of the alternating segment girders and the upper portion of the lower portion of the connecting flange of the alternating segment girders are connected to the adjacent middle segment girders by the girder lower edge and upper edge, In the end portion of the alternation point of the girder, a continuous connection primary PS wire fixing portion and a continuous connection secondary PS wire fixing portion are constituted, respectively, before and after the synthesis of the slab, and a PS steel wire is formed between the abdomen front portion Continuous connection of the slab before the slab connection and continuous connection of the segment girders after the slab are combined Continuously connected by sequential tension of the slab Continuous connection of the segment girder after tensioning of the slab and tensioning Continuous connection of the secondary PS wire The PS strand is a continuous strand that ties the segment girder continuously before the slab is combined. Wherein the central segment girder is joined to the alternating segment girders at both side ends thereof and is connected to the lower portion of the side flange of the central segment girder and the inner side of both sides of the girder And a primary PS wire fixing portion for supporting a girder load is formed on the upper surface of the lower flange and is connected to the girder lower edge of the girder bottom portion of the lower portion of the upper portion of the upper joint flange of the center portion segment girder, And a connecting joint tensioned structure with an alternating segment girder adjacent to the lower edge of the lower flange and the upper abdomen at the upper end of the abdomen and the middle segment girder is formed of a sequential structure of the cross- Organically Linked Junction and Continuous Link by Tension It is characterized by tension.

Description

PSC U girder bridge using segment girders {PSC U girder bridge using segment girder}

The present invention relates to a PSC U girder bridge using a segment girder and more particularly to a PSC U girder divided into a positive and a subsidiary segment girders according to the behavior characteristics of a PSC U girder bridge, And a segment girder for constructing a segment girder with a short length constituted by an outer segment girder and a span middle segment segment girder, or a segment girder for constructing a segment girder with a short length, To the PSC U girder bridge.

Generally, PSC U girder is manufactured by post tension method or pre-tension method in units of span length, and it is mainly used as a method of posting by alternation and pier and then continuing by slab at inner part.

In this case, the weight of the PSC U girder is significantly increased compared to that of the PSC I girder, and in order to mount the PSC U girder on the alternating and pierced girders, it is necessary to construct the production site, transport, Although the stiffness of PSC U girder is high and the usability is excellent due to the excessive necessity, its application is very limited and it is rarely used in Korea.

The disadvantage of the conventional PSC U girder as described above is that since the PSC U girder is manufactured in spiral units and the weight of the PSC U girder is very heavy, it is very difficult and dangerous to manufacture, transport, and mount the girder. There is a problem that it is very limited because the construction cost is excessive and the application is inferior in the field.

In recent years, there has been a case in which the PSC U girder is manufactured and constructed for each small segment. However, the problem of the PSC U girder is reduced by reducing the unit weight of the PSC U girder. However, The number of joints of the segment girders is very large and a large scale steel construction equipment is required to be connected to the joints of the segment girders. Therefore, small and medium sized bridges can not be used because they are less economical due to the burden of the equipment cost.

The improved PSC U girder segment type as described above has a problem in that the number of connection joins of the segment girders is very large and a large scale steel construction equipment is required, which is disadvantageous in economy and can not be used in public.

Therefore, PSC U girder can be reduced to reduce the manufacturing, transportation, and mounting problems, and PSC U girder segment girder can be reduced in the number of connecting joints, and the conventional general hypothesis, It is necessary to develop a girder.

In order to solve the above problems, the present invention has been devised to solve the problems described above. According to the behavior characteristics of the PSC U girder, the PSC U girder is divided into the positive and the negative part segment girders, It is possible to construct a segment girder with a short length by constructing a segment girder with a center segment and a segment girder with an alternate focal segment and a segment segment girder with a spigot fulcrum and a span central segment with a continuous bridge, It is not necessary to use large-scale construction equipment by connecting each segment girder at a construction site, connecting it with a small equipment and manpower by a crane by alternate, pier and hypothetical vent, Since it is the same as the construction process of the girder, it is possible to construct the long-span girder most economically, The purpose of the present invention is to provide PSC U girder bridges using a segment girder which can further enhance the safety and efficiency of the PSC U girder by strengthening the connection of the segment girders and sequentially applying the continuous connection tension according to the construction process. have.

In order to achieve the above object, a PSC U girder bridge using a segment girder according to the present invention is a simple bridge PSC U girder connecting a PSC U girder segment to constitute a bridge girder, And the center portion segment girder is constructed such that one lateral end portion of the alternating portion segment girder constitutes an alternate fulcrum portion and the other lateral end portion is connected and joined to the central segment girder, In the fulcrum portion, the upper flange of the predetermined section has a closed structure with a step, the slab placed on the upper surface of the closed upper flange is formed to have a thicker section than the other sections, and the lower flange ends A primary PS steel wire fixing part which burden the load of the girder is constituted and is tensioned by the lower edge of the girder, A connecting joint PS wire liner fixing part for connecting and joining the segment girders to the upper surface of the lower flange of the connecting joint portion of the alternating segment girders and the connecting portion of the adjacent segment segments are tensioned at the lower girder edge and the upper edge portion, In the end portion of the alternation point of the girder, a continuous connection primary PS wire fixing portion and a continuous connection secondary PS wire fixing portion are formed before and after the synthesis of the slab and the segment girders are continuously connected to each other. Continuous connection of the slab before the slab connection and continuous connection of the segment girders after the slab are combined Continuously sequential connection by the secondary tension Static connection Continuous connection of the segment girders after the slab is combined Continuous connection Secondary PS wire Fitting And PS steel wire are continuously connected to the segment girder before tensioning the slab. The center segment girder is connected to the alternating segment girders at both side ends thereof. The center portion segment girder is connected to the alternate portion segment girders at both sides of the bottom flange end portion of the center segment girder, And the upper side of the inner bottom flange is composed of a primary PS steel wire fixing part which imposes a load on the girder so as to be tensioned by the lower edge of the girder and a connecting joint for connecting the segment girders to the upper surface of the lower flange and the upper part of the abdomen, PS stiffener is composed of a lower flange and a girder lower edge at the top of abdomen, and an alternating segment girder adjacent to the adjacent lower segment girder at the upper edge so that the alternating segment girder and the middle segment girder form a sequential structure of each cross- Organically Linked Joints and Continuous Link by Tension It is characterized by tension.

In the PSC U girder bridge using the segment girders according to the present invention, the continuous connection of each of the continuously connected segment girders is connected to a continuous connection primary PS wire fixing portion And the continuously connected primary PS steel wire and the continuous connected secondary PS steel wire are stretched over the entire portion of the abdomen of the alternate portion and the middle segment girder in the continuous connection secondary PS steel wire fusing portion which tensions after the slab combination located at the upper end of the fixing portion Continuous connection.

In the PSC U girder bridges using the segment girders according to the present invention, a maintenance concrete block is formed in the alternate branch portion of the alternating segment girders, and the steel fixing block is inserted into the maintenance concrete block, A plurality of concave PS steel wire fixing portions having a trumpet shape are provided so as to be reinforced with an outer steel wire inside the girder.

In addition, the PSC U girder bridge using the segment girder according to the present invention is a continuous bridge PSC U girder constituting a bridge girder by continuously connecting PSC U girder segments, wherein the continuous bridge PSC U girder is composed of an alternate- Wherein the alternating fulcrum segment girder comprises a minor segment girder and a spanwise center segment girder wherein one side end of the alternating fulcrum segment girder constitutes an alternate fulcrum portion and the other side end portion is connected to the bridge pier portion segment girder, And the upper flange of the predetermined section has a closed structure at the alternate fulcrum portion of the alternate fulcrum segment girder, the slab placed on the upper surface of the closed upper flange is formed to have a thicker section than the other sections, On both sides of the lower flange end of the flank segment segment girder and on the upper flange of the inner side of both sides, A connecting PS fixing means for connecting the segment girders to the upper surface of the lower flange of the connecting joint portion of the alternating fulcrum segment girder and the upper portion of the abdomen portion, The girder is connected to the lower bridge flange at the upper part of the girder and the upper part of the girder at the upper part of the abdomen. The PS wire is composed of the continuous connection primary PS wire fusing part and the continuous connection secondary PS wire fixing part which are tensioned, and the continuous connection first tension is applied before the slab connection and the continuous connection 2 And the tension of the continuous connection is sequentially made by the tension of the car, and after the synthesis of the slab, And the PS steel wire is a structure located at the upper end of the continuous connection primary PS steel wire fusing part and the PS steel wire, in which the segment girders are continuously connected and tensed before the slab is combined, The segment girder has a structure in which one side end portion of the bridge pier portion segment girder is connected to the alternate fulcrum segment girder and the other side end portion is connected to the spanwise center portion segment girder respectively or both end portions of the girder are connected to the spanwise center portion segment girder respectively And a primary PS steel wire fixing part which imposes a load on the girder is tensed at the lower flange ends of both side surfaces of the bridge pier portion segment girder and is tensioned by the girder lower edge, and the inner surface or the outer surface of the upper portion of the pier portion- And a pivot point PS weld line fixture for tensioning the girder upper edge, Both sides of the transverse girder are connected at the top and bottom of the lower flange of the connecting joint to connect the segment girders to each other. The upper flange is configured to have a thicker cross section than the other section, and the upper flange is configured to be thicker than the other section, Wherein the segment girders of the segmented girder are connected to each other by a continuous connection primary PS wire and a continuous connection secondary PS wire, And after the composite of the slab, the segment girder is continuously connected and tensioned Wherein the span-connected secondary PS strand is positioned at the upper end of the continuous-connected primary PS-strand in which the segment girders are continuously connected and tensed before the slabs are combined, the span- And a primary PS steel wire fusing portion which imposes a girder load is formed on the lower flange end portions of both side faces of the span center portion segment girder and the upper side of the inner lower flange portions of the girder respectively so as to be tensioned by the girder bottom edge, The upper flange of the girder and the upper end of the abdomen of the girder are connected to each other by a connecting joint PS to fix the segment girder to the girder. And the spindle center portion The seam of the concrete girder is composed of a continuously connected primary PS steel wire and a continuous connection secondary PS steel wire which continuously connect the segment girders to each other before and after the slab combination and continuously connect the segment girders to each other. The second PS strand is positioned at the upper end of the continuous connection primary PS strand in which the segment girders are continuously connected and tangled before the slab is assembled. Thus, the above structure has a structure in which the alternate-end segment girder, the pier- The segment girders are connected and continuously connected by the respective sectional structures and the sequential tension of the PS steel wire.

In addition, the PSC U girder bridge using the segment girder according to the present invention is a continuous bridge PSC U girder constituting a bridge girder by continuously connecting PSC U girder segments, wherein the continuous bridge PSC U girder includes an outer segment girder and a span- Wherein the outer side segment girder is a girder in which the alternating fulcrum portion segment girder and the piercing fulcrum portion segment girder are integrated with one segment girder, and at the alternate fulcrum portions and the piercing fulcrums portions of the outer side segment girders, The slabs having a closed structure with a stepped portion and formed on the upper surface of the upper flange closed in the alternate focal length section are formed to have a thicker section than the other sections and the lower flange end portions of both side lower surface flanges of the outer side segment girder, A primary PS wire fixing part for a primary PS wire to bear the load of the girder And a joint joining PS steel wire fixing part for joining the segment girders to the upper side of the lower flange of the connecting joint part of the outer side segment girder and the upper end of the abdomen, And a continuous connection primary PS steel wire fusing section and a continuous connection steel wire fusing section which continuously tension the segment girders before and after the synthesis of the slabs are formed at the alternate flank end portions of the outer side segment girders, And the PS PS steel wire fixing part is constituted respectively, and the PS steel wire is formed in the entire abdomen part, so that the continuous connection is first tensioned before the slab connection and the continuous connection secondary tension is performed after the slab connection. Continuous connection of segment girders Continuous connection to tension PS PS wire fixing part and PS Line is a structure located at the upper end of the continuous connection primary PS steel wire fusing unit and the PS steel wire for continuously connecting and tightening the segment girders prior to the synthesis of the slabs and the spanwise center segment girders are connected and bonded to the outer side segment girders at both side end portions thereof And a primary PS steel wire fuselage portion which imposes a girder load on both side lower flange ends of the spanwise center segment girder and upper surfaces of inner side lower flanges of both side surfaces of the girder are each made to be tense with a girder lower edge of the girder and the lower flange of the connecting joint portion of the span- And a jointed PS strand fixing portion for connecting and joining the segment girders to the upper and lower abdomen portions, respectively, and connected to the outer side segment girders adjacent to the upper and lower edges of the lower flange and the upper portion of the abdomen, In the abdomen, After connecting the continuous girder connected continuously, the continuous connection is made up of the continuous connection primary PS liner and the continuous connection secondary PS liner to make the tension, and the continuous connection of the segment girders to the continuous connection after the composite of the slab, the secondary PS liner And the segment girder is positioned at the upper end of the continuous connection primary PS steel line which is continuously connected and tensed before the composite, so that the outer segment girder and the spanwise center segment girder are subjected to the sequential tension of the cross- And are connected in series.

In addition, the PSC U girder bridge using the segment girder according to the present invention has a construction in which the fixing block on the upper flange of the alternate fulcrum portion, which is one side of the alternate fulcrum segment girder, is used for primary tension only, The fixing block located on the upper flange of the lower flange is used for both primary tension and joint tension between the segment girders. The fixing block located on the upper flange of both side joints of the pier- Wherein the fixing block on the upper flange of the connecting joints on both sides of the spanwise center segment girder is used for both primary tension and joint tension between the segment girders, The upper, lower flange and abdominal cross-section of the connecting joint is thicker than the cross-section other than that portion Characterized by consisting of a structure.

Further, the PSC U girder bridge using the segment girder according to the present invention is characterized in that the continuous connection of each connected segment girder is a continuous connection primary PS liner settlement which is taut before the slab assembly located at the upper end abdomen end of the alternate- And the continuously connected secondary PS strand after the composite slab located at the upper end of the primary PS strand fixing section, the secondary stranded secondary strand is welded over the entire length of the abdomen of the segment girder, the pier end segment segment girder, Continuous connection The primary PS wire and the continuous connection PS wire are connected by tension.

In the PSC U girder bridges using the segment girders according to the present invention, a concrete concrete fixing block for maintenance is formed inside the alternate focal points of the alternate flank segment girders, and the steel fixing block is inserted into the concrete fixing block for maintenance A plurality of concave PS steel wire fusing parts having a trumpet shape and a trusses-shaped concave PS steel wire fusing part are provided inside the fulcrum of the bridge girder, and a direction changing part for passing the PS steel wire is installed And is reinforced by an outer steel wire inside the girder during the common use.

In the PSC U girder bridges using the segment girders according to the present invention, the upper end of the alternate fulcrum of the alternate fulcrum segment segment girders or the outer segment segment girders is composed of the lower flange only by separating the abdomen and the upper flange from each other by a certain distance, And a cross section is formed thick.

In the PSC U girder bridge using the segment girder according to the present invention, a segment girder is connected and joined to the upper portion of the abdomen of the alternate-point segment segment girder and the span-center segment segment girder, and a PS The PS steel wire is continuously connected to the upper portion of the alternating fulcrum segment girder, the piercing fulcrum segment girder and the span center girder segment girder so as to be tensioned continuously, and the piercing point of the pier portion fulcrum segment girder The upper part of the girder part of the part spaced from the part to the left and right is consisted of a continuous connection primary PS steel wire fixing part which continuously ties the segment girders before the slab composition and is continuously connected with the alternate branch part segment girder, The continuous connection primary PS wire is strained, and the span center segment girder and The primary PS strand is connected to the alternating fulcrum segment girder and the pier portion secondary segment girder. The primary strand is connected to the PS strand, which shares the slab load. So as to be tense from the center of the girder to the bottom of the girder.

In the PSC U girder bridges using the segment girders according to the present invention, the upper end of the alternate fulcrums of the alternating fulcrum segment segment girders or the outer segment segment girders is composed of only the lower flange spaced apart from the abdomen and the upper flange by a certain distance, Is formed to have a larger cross-section.

In the PSC U girder bridge using the segment girder according to the present invention, the fixing block on the upper flange of the alternating fulcrum portion, which is one side of the outer segment girder, is used for primary tension only, and the lower flange The fixing block on the upper surface is used for both primary tension and connection joint tension of the segment girder. The fixing block on the upper flange of the connecting joints on both sides of the spanwise center segment girder is composed of a first tension and a segment girder And the upper and lower flanges and the abdomen section of the connecting joint of each of the segment girders are thicker than the section other than the above section.

Further, the PSC U girder bridge using the segment girder according to the present invention is characterized in that the continuous connection of each of the connected segment girders is composed of a continuous connected primary PS steel wire fusing portion which is tensioned before the slabs are positioned at the upper- Continuous connection in the continuous PS secondary steel wire fusing unit which is tense after the slab composite located at the top of the continuous connection primary PS steel wire fusing unit. Continuous connection between the outer side segment girder and the span middle segment girder during the entire abdomen. And the secondary PS wire is tensioned and connected continuously.

In the PSC U girder bridges using the segment girders according to the present invention, a maintenance concrete block is formed in the interior of the alternating fulcrum portion of the outer segment girders, and the concrete fixing block is provided with a trumpet A plurality of concave PS steel wire fusing parts having a trumpet shape or a direction changing part through which a PS steel wire passes may be provided inside the fulcrum part of the bridge girder segment girder, So as to be reinforced by an outer steel wire.

According to another aspect of the present invention, there is provided a PSC U girder bridge construction method using a segment girder, the PSC U girder segment being connected to the PSC U girder segment, , And the primary PS wire is tensioned to the girder bottom to make the girder load. After each segment is mounted on the alternating and temporary vent, the girder is connected to the bottom of the girder at the connecting joint of the segment. Connections Connections Connections by tensioning (tensioning) the PS wires and alternating connections of the alternating segments of the girders Continuously connecting the segments of the girders that are continuously connected at the ends of the upper end of the girders Continuous connection before the slabs are joined Tension the primary PS wires (3rd tension) and after continuous slab synthesis, the secondary PS wire of continuous connection is tensioned (4th tension) The features.

In the PSC U girder bridge construction method using the segment girder according to the present invention, the PSC U girder segment girder is continuously connected to the PSC U girder segment girder by continuously connecting the PSC U girder segment girder to the alternate branch portion segment girder, (First tension) to each girder under the girder, and each girder is loaded on the alternating and bridge piers and the hypothetical vent. The joint joining PS wire is tensioned (secondary tensioned) by the girder lower edge and the upper girder at the connecting joint of each of the segment girders, and the joint of the segment girder continuously connected at the upper end abdominal end of the alternating- Before the slab synthesis over the entire section, the continuous connection PS liner is tensioned (tertiary tension), and after the slab composition, the continuous connection secondary PS After completely connecting the entire section by tensioning (fourth tension), the section of the pier of the bridge girder is tensioned (fifth tension) on the inner or outer surface of the pier of the bridge girder by the girder upper edge Continuous connection is made.

Also, in the PSC U girder bridge construction method using the segment girder according to the present invention, the PSC U girder segment girder is divided into the outer segment girder and the span middle segment segment girder in the continuous bridge construction in which the PSC U girder segment girders are continuously connected. (First tension) to the girder bottom in the manufacturing site, the load of the girder is subjected to the tension (primary tension), and each of the segment girders is mounted on the alternating and piercing bridge and the temporary vent, (Second tension), and the continuous connection is made before the slab assembly over the entire abdomen of the segment girder continuously connected at the upper end abdomen end of the alternating portion of the outer segment girder. (3rd tension), and after the slab combination, the continuous connection PS wire is tensioned (4th tension), so that it is completely After the segment in connection to the lateral side piers point stress portion or the inner surface of the outer portion pier point PS steel girder with the upper edge at the top of the stomach of the girder (5 car tension) is characterized in that the continuous connecting construction.

As described above, the PSC U girder bridge using the segment girder according to the present invention has the following effects.

First, according to the present invention, the PSC U girder is classified into a positive and a negative moment segment girders according to the behavior characteristics, and the alternate segment segment girders and the middle segment segment girders are constituted in a simple bridge. In the continuous bridge, A segment girder and a span center segment segment girder, or a segment girder having a short length constituted by an outer segment segment girder and a span center segment segment girder, and after constructing each segment girder at a construction site, It is possible to construct long-span girder because it is the same as the construction process of general PSC U girder, because it does not require large-scale installation equipment by connecting and continuous connection with small equipment and manpower.

Second, according to the present invention, it is possible to further enhance the safety and efficiency of the PSC U girder by strengthening the connection joint of the segment girders and sequentially performing the continuous connection tension according to the construction process, thereby constructing the PSC U girder bridge most economically .

1 is a vertical sectional view showing a PSC U girder simple bridge using a segment girder according to the present invention;
Fig. 2 is an enlarged view showing the alternating-section segment girder of Fig. 1,
3 is a sectional view taken along the line AA in Fig. 2,
Fig. 4 is a sectional view taken along line BB of Fig. 2,
5 is a sectional view taken along line CC of Fig. 2,
FIG. 6 is a cross-sectional view taken along line DD of FIG. 2,
FIG. 7 is a sectional view taken along the line EE of FIG. 2,
Fig. 8 is a detailed view showing an enlarged view of the center segment girder of Fig. 1,
9 is a sectional view taken along the line AA in Fig. 8,
10 is a sectional view taken along line BB of Fig. 8,
11 is a cross-sectional view taken along line CC of Fig. 8,
Fig. 12 is a cross-sectional view taken along line DD of Fig. 8,
13 is a sectional view taken along the line EE of Fig. 8,
14 is a longitudinal sectional view showing a PSC U girder simple bridge using a segment girder according to the present invention.
Fig. 15 is a detail view showing an enlarged view of the alternating-portion segment girder of Fig. 14,
16 is a sectional view taken along the line AA in Fig. 15,
Fig. 17 is a sectional view taken along line BB of Fig. 15,
18 is a cross-sectional view taken along line CC of Fig. 15,
19 is a cross-sectional view taken along line DD of Fig. 15,
Fig. 20 is a sectional view taken along line EE of Fig. 15,
21 is a cross-sectional view taken along the line FF of Fig. 15,
Fig. 22 is a detailed view showing an enlarged view of the center segment girder of Fig. 14,
23 is a sectional view taken along the line AA in Fig. 22,
Fig. 24 is a sectional view taken along line BB of Fig. 22,
25 is a sectional view taken along line CC of Fig. 22,
26 is a cross-sectional view taken along line DD of Fig. 22,
FIG. 27 is a sectional view taken along line EE of FIG. 22,
28 is a vertical sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention,
29 is an enlarged view showing an alternate flank segment girder of Fig. 28,
30 is a sectional view taken along the line AA in Fig. 29,
31 is a sectional view taken along line BB of Fig. 29,
32 is a sectional view taken along the line CC of Fig. 29,
33 is a cross-sectional view taken along line DD of Fig. 29,
Fig. 34 is a sectional view taken along line EE of Fig. 29,
Fig. 35 is a detailed view showing the bridgehead segment girder of Fig. 28 in an enlarged scale,
FIG. 36 is a sectional view taken along the line AA in FIG. 35,
37 is a sectional view taken along line BB of Fig. 35,
38 is a sectional view taken along the line CC of Fig. 35,
39 is a sectional view taken along line DD of Fig. 35,
40 is a sectional view taken along line EE of Fig. 35,
Fig. 41 is a detailed view showing the spanwise center segment girder of Fig. 28 in an enlarged scale,
42 is a sectional view taken along the line AA in Fig. 41,
Fig. 43 is a sectional view taken along line BB of Fig. 41,
44 is a sectional view taken along the line CC of Fig. 41,
45 is a cross-sectional view taken along line DD of Fig. 41,
FIG. 46 is a sectional view taken along line EE of FIG. 41,
47 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention,
Fig. 48 is a detailed view showing an alternate flank segment girder of Fig. 47 in an enlarged scale;
Fig. 49 is a sectional view taken along the line AA in Fig. 48,
50 is a sectional view taken along line BB of Fig. 48,
51 is a sectional view taken along the line CC of Fig. 48,
52 is a cross-sectional view taken along line DD of Fig. 48,
Fig. 53 is a sectional view taken along line EE of Fig. 48,
Fig. 54 is a sectional view taken along the FF line in Fig. 48,
Fig. 55 is an enlarged view showing the bridgehead segment girder of Fig. 47,
FIG. 56 is a sectional view taken along the line AA in FIG. 55,
FIG. 57 is a sectional view taken along line BB of FIG. 55,
FIG. 58 is a sectional view taken along the line CC of FIG. 55,
FIG. 59 is a cross-sectional view taken along line DD of FIG. 55,
FIG. 60 is a sectional view taken along line EE of FIG. 55,
Fig. 61 is an enlarged view of the span center segment girder of Fig. 47,
Fig. 62 is a sectional view taken along line AA in Fig. 61,
Fig. 63 is a sectional view taken along line BB of Fig. 61,
Fig. 64 is a sectional view taken along the line CC of Fig. 61,
Fig. 65 is a cross-sectional view taken along line DD of Fig. 61,
Fig. 66 is a sectional view taken along line EE of Fig. 61,
67 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention,
68 is an enlarged view of the outer side segment girder of Fig. 67,
69 is a sectional view taken along the line AA in Fig. 68,
Fig. 70 is a sectional view taken along line BB of Fig. 68,
71 is a sectional view taken along the line CC of Fig. 68,
72 is a cross-sectional view taken along line DD of Fig. 68,
FIG. 73 is a sectional view taken along line EE of FIG. 68,
74 is a cross-sectional view taken along the line FF of Fig. 68,
Fig. 75 is an enlarged view of the span center segment girder of Fig. 67,
76 is a sectional view taken along the line AA in Fig. 75,
FIG. 77 is a sectional view taken along line BB of FIG. 75,
78 is a sectional view taken along the line CC of Fig. 75,
79 is a cross-sectional view taken along line DD of Fig. 75,
80 is a sectional view taken along line EE of Fig. 75,
81 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention,
82 is an enlarged view of an alternate flank segment girder of Fig. 81,
83 is a sectional view taken along the line AA in Fig. 82,
Fig. 84 is a sectional view taken along line BB of Fig. 82,
85 is a sectional view taken along the line CC of Fig. 82,
86 is a cross-sectional view taken along line DD of Fig. 82,
Fig. 87 is a sectional view taken along line EE of Fig. 82,
88 is a cross-sectional view taken along line FF of Fig. 82,
FIG. 89 is a detail view showing an enlarged view of the span center segment girder of FIG. 81,
90 is a sectional view taken along the line AA in FIG. 89,
91 is a sectional view taken along line BB of Fig. 89,
FIG. 92 is a sectional view taken along the line CC in FIG. 89,
93 is a sectional view taken along line DD of Fig. 89,
FIG. 94 is a sectional view taken along line EE of FIG. 89,
95 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention,
96 is a detail view showing an enlarged view of the alternate flank segment girder of Fig. 95,
97 is an enlarged view of the bridgehead segment girder of Fig. 95,
98 is an enlarged view showing the spanwise center segment girder of FIG. 95,
FIG. 99 is a detail view showing an enlarged view of the bridgehead segment girder of FIG. 95;
100 is a sectional view taken along the line AA in Fig. 99,
101 is a sectional view taken along line BB of Fig. 99,
FIG. 102 is a sectional view taken along the line CC of FIG. 99,
FIG. 103 is a sectional view taken along line DD of FIG. 99,
FIG. 104 is a sectional view taken along the line EE of FIG. 99; FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[Simple bridge 1]

Fig. 1 is a vertical sectional view showing a PSC U girder simple bridge using a segment girder according to the present invention. Fig. 1 and Fig. 2 are enlarged views of an alternating section segment girder of Fig. 1, Fig. 3 is a cross- 2 is a cross-sectional view taken along the line DD of Fig. 2, Fig. 7 is a sectional view taken along the line EE of Fig. 2, and Fig. 8 is a cross- 8 is a cross-sectional view taken along the line BB in Fig. 8, Fig. 11 is a cross-sectional view taken along the line CC in Fig. 8, 8 is an EE line sectional view.

As shown in these drawings, a PSC U girder bridge SB using a segment girder according to the present invention is composed of an upper flange 110, a lower flange 120 and a belly 130, A sub segment girder (ASG); The upper flange 200 and the lower flange 210 and the abdomen 220 are connected to the alternating segment girder ASG by the continuous connection primary PS steel wire 172 and the continuous connection secondary PS steel wire 182 A simple bridge PSC U girder comprising a central segment girder (CSG) having a constant length,

A closed upper flange 114 is formed at one side of the upper flange 110 of the alternating segment girder ASG to close the upper surface of the section in the longitudinal direction and the lower flange 120 of the alternating segment girder ASG A thick plate lower flange 122 having a predetermined thickness in a longitudinal direction is formed at one side of the plate lower flange 122 and an outer primary PS steel wire fusing unit 140 is installed at the plate lower flange 122, An outer primary PS steel wire 142 is provided across the car PS wire fixing portion 140 and an inner primary PS steel wire fixing portion 150 is provided at a portion spaced apart from the rear plate lower flange 122 by a predetermined distance. And an inner primary PS steel wire 152 is provided across the inner primary PS steel wire fusing unit 150. An inner primary PS steel wire 152 is installed on one side of the abdomen 130 of the alternating segment girder ASG, And the continuous connection primary PS wire fixing unit 170 is installed in the continuous connection primary PS wire fixing unit 17 0 is provided with a continuous connection primary PS wire 172 and a continuous connection secondary PS wire fixing part 180 is provided on the upper part of the continuous connection primary PS wire fixing part 170, A continuous PS secondary wire 182 is installed in the secondary PS wire fixing portion 180 and an upper portion of the inner side abdomen 130 spaced apart from the inside of the alternating segment girder ASG by a predetermined distance is connected to the connecting joint PS wire fixing portion 180. [ A connecting joint PS wire 162 is installed on the joint joining PS steel wire fusing part 160 and the both sides of the lower flange 210 of the center part segment girder CSG are fixed in a longitudinal direction The outer plate primary flange 212 is provided with an outer primary PS steel wire fusing portion 230 and the outer primary steel wire fusing portion 230 is provided between the outer primary steel wire fusing portion 230 An outer primary PS steel wire 232 is installed across the lower plate lower flange 212 and an inner primary PS steel wire is fixed to a portion spaced inward from the lower plate lower flange 212 An inner primary PS steel wire 242 is provided across the inner primary PS steel wire fusing unit 240 and an upper end of the connecting primary bonding wire 240 is connected to the upper end of the stern portion 220 of the central segment girder CSG. The PS wire fixing unit 250 is installed so that the alternate segment segment girder ASG and the center segment segment girder CSG are sequentially tensioned by the continuous connection primary strand 172 and the continuous secondary strand 182, As shown in FIG.

The continuous connection of the alternating segment girder ASG and the center segment girder CSG is accomplished by connecting the alternating segment girder ASG to the continuous connection primary PS wire fixing portion 170 and the continuous connection secondary PS wire fixing portion 180 and the continuously connected primary PS strand 172 and the continuously connected secondary PS strand 182 over the entire section of the abdomen 130 of the alternating segment girder ASG and the belly 220 of the middle segment girder CSG, Are tensed and connected in series.

A maintenance fixing block 190 is provided on the inner side abdomen 130 of the alternating segment girder ASG and a PS wire fixing portion 192 is provided on the maintenance fixing block 190.

That is, the PSC U girder bridge SB using the segment girder according to the present invention is composed of an alternating segment segment girder (ASG) and a middle segment segment girder (CSG).

One side end of the alternating segment girder (ASG) constitutes an alternating fulcrum portion (100) and the other side end portion is connected to the center segment girder (CSG). The alternating segment girder (ASG) The upper flange 110 forms a closed upper end flange 114 having a step 112 and a slab formed on the upper surface of the closed upper end flange 114 is formed in the lower end The thickness of the slab is made thicker than the section other than the upper flange 114 and the lower flange 120 on both sides of the alternate segment segment girder ASG has a thick plate lower flange 122 having a thicker thickness than the other sections And an outer primary PS steel wire fusing part 140 and an inner primary PS steel wire fusing part 150 which bear the load of the alternating segment girder ASG are provided at the end of the steel plate lower flange 122, In the plate lower flange 122, the outer primary PS The upper portion of the lower flange 120 of the connecting joint portion 194 of the alternating segment girder ASG and the upper portion of the abdomen portion 130 are tensioned by the alternate segment girder A center joint segment CSG adjacent to the lower flange 120 and the upper flange 110 of the alternating segment girder ASG and a joint segment PS girder The connecting segment PS is connected and tightened by the connecting wire 162 and the abdomen portion 130 of the alternating fulcrum portion 100 of the alternating segment girder ASG is connected to the alternating portion segment girders ASG before and after the slab combination And the continuous PS primary wire 172 and the continuous secondary PS wire fixing unit 180 are provided in the entire region of the abdomen 130. The continuous PS primary wire fixing unit 170 and the continuous secondary PS wire fixing unit 180 The secondary PS stranded wire 182 is provided so that the continuous connected primary PS stranded wire 172 is strained before the slabs are combined, The continuous PS secondary steel wire 182 of the alternating segment girder ASG is tensioned in succession to be continuously tensioned, and the continuous secondary PS steel wire fixing unit The continuous PS secondary wire 180 and the continuously connected secondary PS steel wire 182 are connected to the continuously connected primary PS steel wire fusing unit 170 continuously connected and tensioned with the alternating segment girder ASG before the slabs are combined, ).

The center portion segment girder CSG is connected to the alternating segment girder ASG at both side end portions thereof and the lower flange 210 on both sides of the center segment segment girder CSG has a thicker plate portion The outer primary PS steel wire fusing part 230 and the inner primary PS steel wire fusing part 240 which bear the load of the center segment girder CSG are installed in the steel plate lower flange 212 And is tensioned by the outer primary PS steel wire 232 and the inner primary PS steel wire 242 to the plate lower flange 212 of the center segment segment girder CSG and the both side connection joints 244 of the center segment girder CSG A connecting joint PS wire fixing portion 250 for connecting the center segment girder CSG to the upper portion of the lower flange 210 and the upper portion of the abdomen portion 220 is installed to connect the lower flange 210 and the upper portion of the abdomen 220 The lower flange 210 of the center segment girder CSG and the upper flange 210 of the center segment & If made of a segment shift unit girder structure it is joined to the connection (ASG) adjacent to the 200.

The PSC U girder bridge SB using the segment girder according to the present invention having the above-described structure is constructed by the cross-sectional structure of the alternating segment girder ASG and the center segment girder CSG, ) And the sequential secondary PS wire 182, which are connected in series.

The continuous connection of the alternating segmented girder ASG and the central segmented girder CSG is also advantageous in that the successive connection of the alternating segment girders ASG to the alternating segment girders ASG, The alternating segment segment girder ASG in the continuous primary PS steel wire fusing unit 170 and the continuously connected secondary PS steel wire fusing unit 180 tensioned after the slab combination located at the upper end of the continuously connected primary PS steel wire fusing unit 170, The continuous connection primary PS wire 172 and the continuous connection secondary PS wire 182 are tensed and connected continuously over the whole section of the abdomen portion 130 of the central segment girder CSG and the abdomen portion 220 of the center segment girder CSG.

A maintenance fusing block 190 is installed in the alternate focal point 100 of the alternating segment girder ASG and the fusing fixture block 190 is provided with a steel fixture for insertion and installation A plurality of concave PS steel wire fins 192 having a trumpet shape are provided so as to be reinforced by an outer steel wire inside the common middle portion segment girder ASG.

Hereinafter, the present invention will be described in more detail.

The PSC U girder bridges (SB) using the segment girders according to the present invention are designed in such a manner that, considering the behavior characteristics of the segment girders and the convenience of manufacture, transportation and installation in the simple bridge (SB) And a central segmented girder (CSG).

The length of the alternating segment girder ASG is set to a certain interval inward from the alternate fulcrum portion 100. In the configuration of the alternating segment girder ASG, One side end portion constitutes the alternate focal point portion 100 and the other side end portion is connected to the center segment girder CSG.

The closed upper flange 114 is formed in a section in which a certain section of the upper flange 110 of the alternate portion segment 100 of the alternating segment girder ASG is closed, Is composed of an opened cross section.

The height of the closing upper flange 114 is set to be lower than the interval other than the interval to be closed so that a step 112 is formed and a slab formed on the upper surface of the closing upper flange 114 is formed thicker than other sections Thereby attenuating the impact of the vehicle.

The outer primary PS steel wire fusing part 140 and the inner primary PS steel wire fusing part 140 which bear the load of the alternating segment girder ASG are provided at the ends of the lower flanges 120 on both sides of the alternating segment girder ASG 150 are installed and are tensed by the outer primary PS strand 142 and the inner primary PS strand 152. The upper surface of the lower flange 120 on the inner side of the other side and the upper end of the middle segment girder CSG and the connecting segment PS girder fixing portion 160 for connection and connection with the middle segment girder CSG adjacent to the lower flange 120 and the upper flange 110 of the alternating segment girder ASG. And the alternating segment girder ASG and the central segment girder CSG are continuously connected and tightened before the slab is joined to the end portion of the abdomen 130 of the alternate focal point portion 100 of the alternating segment girder ASG, The primary PS wire fixing portion 170 is provided and is continuously connected to the abdomen 130 (secondarily) A continuous connection secondary PS steel wire fusing unit 180 for continuously tensioning the alternating segment girders ASG and the center segment girder CSG after the slab synthesis is installed at the upper end of the continuously connected primary PS steel wire fusing unit 170, (Third tension) to the abdomen portion 130 of the secondary segment girder ASG and the abdomen portion 220 of the middle segment girder CSG and the continuous connection secondary PS wire fixing portion 180 is connected to the continuous connection 2 The secondary PS wire 182 is always positioned at the upper end of the continuous connection primary PS wire fixing portion 170 and the continuous connection primary PS wire 172.

The central portion segment girder CSG is a segment girder which bear the moment segment section. The length of the central segment segment girder CSG is a section excluding the alternating segment segment girders ASG. Both side end portions of the center segment girder CSG are connected and connected to the alternating segment girders ASG and the ends of the lower flanges 210 on both sides of the center segment girder CSG are connected to the center segment girders CSG An outer primary PS steel wire fusing part 230 and an inner primary PS steel wire fusing part 240 which bear the load of the center segment girder CSG are installed respectively on the upper surface of the lower flange 210 on the inner side of both sides Is connected to the continuous flange 210 of the segment girder CSG and the abdominal portion 220 of the central segment girder CSG is connected to the continuously connected primary PS strand 172 coming from the alternating segment girder ASG, If the secondary PS wire 182 is double The primary continuous connection and the slab load are burdened by the continuous connection primary PS steel wire 172 before the slab synthesis and the continuous connection secondary PS steel wire 182 after the slab composite is subjected to the continuous connection tension (tertiary tension) (4th-order tension), which is responsible for the second continuous connection and live load.

In addition, the continuous connection tension of the continuous connection primary PS wire 172 and the continuous connection secondary PS wire 182 is continuously and tightly connected to the abdomen 220 of the center segment girder CSG, Control function.

A connecting joint PS wire fixing part 250 is installed on the upper surface of the inner bottom flange 210 and the upper part of the abdomen part 220 of the central segment segment girder CSG to form the lower flange 210 and the upper flange 210 of the center segment girder CSG. And is connected to the alternating segment girder (ASG) adjacent to the flange (200).

The PSC U girder bridge SB using the segment girder according to the present invention having the above-described structure is constructed by the cross-sectional structure of the alternating segment girder ASG and the center segment girder CSG, ) And the sequential secondary PS wire 182 are sequentially tied together and continuously connected to each other.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

1 to 13, a PSC U girder bridge construction method using a segment girder according to the present invention comprises fabricating an alternating segment segment girder (ASG) and a central segment segment girder (CSG) in a manufacturing site, The girder ASG and the center segment girder CSG are tensed (first tensioned) by the outer primary PS steel wires 142 and 232 and the inner primary PS steel wires 152 and 242 respectively to form the alternate segment girders ASG and ASG The load of the center segment girder CSG is borne and the alternating segment girder ASG and the center segment girder CSG are mounted on the alternating A and hypothetical B and the alternating segment girders ASG, And the central segmented girder CSG are connected and joined together by tensions (secondary tensions) of the connecting jointed PS wire 162 and the alternating segmented girder ASG is connected to the continuously connected primary PS steel wire fitter 170 The entire portion of the abdomen portion 130 of the secondary segment girder ASG and the abdomen portion 220 of the middle segment girder CSG (Third tension) with the continuous connection primary PS steel wire 172 over the entire length of the center segment girder CSG and the concrete is placed and cured on the upper portion of the alternating segment girder ASG and the center segment girder CSG to form a slab, The entire length of the abdomen portion 130 of the alternating segment girder ASG and the abdomen portion 220 of the middle segment girder CSG in the continuously connected secondary PS steel wire fusing portion 180 of the alternating segment girder ASG Continuous connection The secondary PS wire (182) is tensioned (fourth tension) and continuous connection is made.

However,

Fig. 14 is a longitudinal sectional view showing a PSC U girder simple bridge using a segment girder according to the present invention. Fig. 2 and Fig. 15 are enlarged views of an alternating section segment girder of Fig. 14, Fig. 15 is a sectional view taken along the line BB of Fig. 15, Fig. 18 is a sectional view taken along the line CC of Fig. 15, Fig. 22 is an enlarged view of the center segment girder of Fig. 14, Fig. 23 is a sectional view taken along line AA in Fig. 22, Fig. 24 is a sectional view taken along line BB of Fig. 22, 22 is a sectional view taken along line DD of FIG. 22, and FIG. 27 is a sectional view taken along line EE of FIG.

As shown in these drawings, a PSC U girder bridge SB using a segment girder according to the present invention is composed of an upper flange 110, a lower flange 120 and a belly 130, A sub segment girder (ASG); The upper flange 200 and the lower flange 210 and the abdomen 220 are connected to the alternating segment girder ASG by the continuous connection primary PS steel wire 172 and the continuous connection secondary PS steel wire 182 (CSG) girder (CSG) having a predetermined length, wherein both sides of the alternating segment girder (ASG) are protrudingly extended outside along the longitudinal direction by a predetermined length, and at the same time a thick thick plate The outer primary PS wire fixing portion 140 is provided on the bottom plate flange 122 and the outer primary PS wire fixing portion 140 is disposed across the outer primary PS wire fixing portion 140. [ The inner primary PS wire fixing unit 150 is installed at a portion spaced apart from the bottom plate flange 122 by a predetermined distance and the inside primary PS wire fixing unit 150 An inner primary PS steel wire 152 is installed across the alternating segment girder ASG, A continuous connection primary PS wire fixing portion 170 is provided at one side of the abdomen portion 130 of the continuous connection primary PS wire fixing portion 170 in the longitudinal direction, And a continuous connection secondary PS wire fixing unit 180 is installed on the upper part of the continuously connected primary PS wire fixing unit 170. The continuous connection secondary PS wire fixing unit 180 is provided with a continuous connection secondary A PS connecting wire fixing part 160 is installed on the upper part of the inner abdomen part 130 spaced from the inside of the alternating segment girder ASG by a predetermined distance, And a thick plate lower flange 212 is formed on both sides of the lower flange 210 of the center segment segment girder CSG at a predetermined interval in the longitudinal direction The outer plate primary flange 212 is provided with an outer primary PS steel wire fusing unit 230, An inner primary PS steel wire fusing unit 240 is installed at a portion spaced inwardly from the steel plate lower flange 212 and the inner primary PS steel wire fusing unit 240 An inner primary PS wire 242 is installed across the center segment girder CSG and a connecting joint PS wire wire fusing unit 250 is installed at the upper end of the abdomen 220 of the central segment girder CSG, And the center segment girder (CSG) are connected and bonded by sequential tensioning of the continuously connected primary PS strand 172 and the continuous connected secondary PS strand 182.

The continuous connection of the alternating segment girders ASG and the center segment girders CSG is accomplished by connecting the alternating segment girders ASG to the continuous connection primary PS wire fixing portion 170 and the continuous connection secondary PS wire fixing portion 180 and the continuously connected primary PS strand 172 and the continuous connected secondary PS strand 182 over the entire section of the abdomen 130 of the alternating segment girder ASG and the belly 220 of the middle segment girder CSG ) Are tensed and connected in series.

A maintenance fusing block 190 is provided on the inner abdomen 130 of the alternating segment girder ASG and a PS wire fusing part 192 is provided on the fusing block 190 for maintenance.

That is, the PSC U girder bridge using the segment girder according to the present invention is made up of an alternating segment segment girder (ASG) and a middle segment segment girder (CSG).

The alternating segment girder ASG has a structure in which one side end portion of the alternating portion segment girder ASG constitutes an alternate fulcrum portion 100 and the other side end portion is connected to the center segment girder CSG, The upper flange 110 of the predetermined section forms a closed upper closing flange 114 having the step 112 and the closing upper flange 114 of the lower closing flange 114 is formed at the alternate upper end flange 114 of the alternating segment girder ASG, The slab formed on the upper surface of the alternating segment girder ASG has a thicker slab thickness than the section other than the closed upper flange 114 and the lower flanges 120 on both sides of the alternating segment girder ASG have a lower flange 120 The outer plate primary flange 122 is formed with an outer primary PS steel wire fusing unit 140 and an inner primary side steel flange 122. The outer side primary flange 122 has a thickness larger than that of the outer side primary flange 122, The primary PS wire fixing unit 150 is installed And is tensioned by the outer primary PS steel wire 142 and the inner primary PS steel wire 152 at the plate bottom flange 122 and the lower flange 120 of the connecting joint 194 of the alternating segment girder ASG A connecting joint PS steel wire fusing unit 160 for connecting and connecting the alternating segment girders ASG is provided on the upper surface of the upper portion and the upper portion of the abdomen 130. The upper flange 120 and the upper flange 120 of the alternating segment girder ASG, Is connected and joined to the center segment girder (CSG) adjacent to the flange (110) by the joint joining PS steel wire (162) and the end portion of the abdomen (130) of the alternate fulcrum portion (100) of the alternating segment girder A continuous connection primary PS steel wire fixing portion 170 and a continuous connection secondary PS steel wire fixing portion 180 are provided respectively for continuously connecting and tightening the alternating segment girders ASG before and after the slab combination and the center segment girder CSG The continuous connection primary PS wire 172 and the continuous connection secondary PS wire 182 are connected to the entire section of the abdomen part 220 So that the continuously connected primary PS steel wire 172 is tensioned before the slab combination and the continuously connected secondary PS steel wire 182 of the alternating segment girder ASG is tense after the slab is formed so that the continuous connected secondary steel wire 182 is successively connected and tightened, The continuously connected secondary PS liner fitter 180 and the continuous connected secondary PS liner 182, which subsequently serially connect and tension the alternating segment girders ASG, are connected to the alternating segment girders ASG in succession, And is located at the uppermost position of the continuously connected primary PS wire fixing portion 170 and the continuous connection primary PS wire 172.

The center portion segment girder CSG is connected to the alternating segment girder ASG at both side end portions thereof and the lower flange 210 on both sides of the center segment segment girder CSG has a thicker plate portion The outer primary PS steel wire fusing part 230 and the inner primary PS steel wire fusing part 240 which bear the load of the center segment girder CSG are installed in the steel plate lower flange 212 And is tensioned by the outer primary PS steel wire 232 and the inner primary PS steel wire 242 to the plate lower flange 212 of the center segment segment girder CSG and the both side connection joints 244 of the center segment girder CSG A connecting joint PS wire fixing portion 250 for connecting the center segment girder CSG to the upper portion of the lower flange 210 and the upper portion of the abdomen portion 220 is installed to connect the lower flange 210 and the upper portion of the abdomen 220 The lower flange 210 of the center segment girder CSG and the upper flange 210 of the center segment & And is connected to an alternating segment girder (ASG) adjacent to the land (200).

The PSC U girder bridge SB using the segment girder according to the present invention having the above-described structure is constructed by the cross-sectional structure of the alternating segment girder ASG and the center segment girder CSG, ) And the sequential secondary PS wire 182 are sequentially tied together and continuously connected to each other.

The continuous connection of the alternating segmented girder ASG and the central segmented girder CSG is also advantageous in that the successive connection of the alternating segment girders ASG to the alternating segment girders ASG, The alternating segment segment girder ASG in the continuous primary PS steel wire fusing unit 170 and the continuously connected secondary PS steel wire fusing unit 180 tensioned after the slab combination located at the upper end of the continuously connected primary PS steel wire fusing unit 170, The continuous connection primary PS wire 172 and the continuous connection secondary PS wire 182 are tensed and connected continuously over the whole section of the abdomen portion 130 of the central segment girder CSG and the abdomen portion 220 of the center segment girder CSG.

A maintenance fusing block 190 is installed in the alternate focal point 100 of the alternating segment girder ASG and the fusing fixture block 190 is provided with a steel fixture for insertion and installation A plurality of concave PS steel wire fins 192 having a trumpet shape are provided so as to be reinforced by an outer steel wire inside the common middle portion segment girder ASG.

Hereinafter, the present invention will be described in more detail.

The PSC U girder bridges (SB) using the segment girders according to the present invention are designed in such a manner that, considering the behavior characteristics of the segment girders and the convenience of manufacture, transportation and installation in the simple bridge (SB) And a central segmented girder (CSG).

The length of the alternating segment girder ASG is set to a certain interval inward from the alternate fulcrum portion 100. In the configuration of the alternating segment girder ASG, One side end portion constitutes the alternate focal point portion 100 and the other side end portion is connected to the center segment girder CSG.

The closed upper flange 114 is formed in a section in which a certain section of the upper flange 110 of the alternate portion segment 100 of the alternating segment girder ASG is closed, Is composed of an opened cross section.

The height of the closing upper flange 114 is set to be lower than the interval other than the interval to be closed so that a step 112 is formed and a slab formed on the upper surface of the closing upper flange 114 is formed thicker than other sections Thereby attenuating the impact of the vehicle.

The outer primary PS steel wire fusing part 140 and the inner primary PS steel wire fusing part 140 which bear the load of the alternating segment girder ASG are provided at the ends of the lower flanges 120 on both sides of the alternating segment girder ASG 150 are installed on the upper side of the lower flange 120 and the upper side of the lower flange 120 and the upper end of the abdomen 130 are tightened by the outer primary PS steel wire 142 and the inner primary PS steel wire 152, A joint joining PS steel wire fusing unit 160 for joint connection with the center segment girder CSG and the adjacent center segment girder CSG by the lower flange 120 and the upper flange 110 of the alternating segment girder ASG, The alternating segment girder ASG and the central segment girder CSG are continuously and tightly connected to each other before the slab is joined to the end of the abdomen 130 of the alternating fulcrum portion 100 of the alternating segment girder ASG, A connecting primary PS wire fixing portion 170 is provided to connect the abdomen portion 130 of the alternating segment girder ASG, And the upper end of the continuous connection primary PS wire fixing portion 170 is connected to the alternate segment segment girder ASG and the middle segment segment girder CSG in the continuously connecting secondary PS wire fixing portion 180 so that the abdomen portion 130 of the alternating segment girder ASG and the abdominal portion 220 of the middle segment girder CSG are continuously connected And the continuous connection secondary PS wire fixing unit 180 and the continuous connection secondary PS wire 182 are connected to the continuous connection primary PS wire fixing unit 170 and the continuous connection primary wire 172, It is always located at the top.

The central portion segment girder CSG is a segment girder bearing a section of the moment segment. The length of the central portion segment girder CSG is a section excluding the alternating portion segment girder ASG. Both side end portions of the central segment girder CSG are joined to the alternating segment girder ASG and the ends of the lower flange 210 on both sides of the center segment segment girder CSG are connected to the center segment girder CSG An outer primary PS steel wire fusing part 230 and an inner primary PS steel wire fusing part 240 which bear the load of the center segment girder CSG are installed respectively on the upper surface of the lower flange 210 on the inner side of both sides Is tensed by the outer primary PS strand 232 and the inner primary PS strand 242 of the segment girder CSG and the abdomen 220 of the central segment girder CSG is continuous with the alternating segment girder ASG Connect primary PS wire 172 and A continuous connection secondary PS steel wire 182 is disposed so as to be subjected to continuous connection tension (tertiary tension) by the continuous connection primary PS steel wire 172 to bear the primary continuous connection and the slab load before slab combination, (Fourth tension) by the continuous connection secondary PS wire 182, thereby paying for the secondary continuous connection and live load.

In addition, the continuous connection tension of the continuous connection primary PS wire 172 and the continuous connection secondary PS wire 182 is continuously and tightly connected to the abdomen 220 of the center segment girder CSG, Control function.

A connecting joint PS wire fixing part 250 is installed on the upper surface of the inner bottom flange 210 on both sides of the center segment segment girder CSG and the upper part of the abdomen 220 to form the lower flange 210 of the center segment girder CSG, And an alternate segmented girder (ASG) adjacent to the upper flange 200.

The PSC U girder bridge SB using the segment girder according to the present invention having the above-described structure is constructed by the cross-sectional structure of the alternating segment girder ASG and the center segment girder CSG, ) And the continuous PS secondary strand 182. The PSC U girder bridge (SB) is an improved PSC U girder bridge (SB) that is organically connected and continuous connected by tension.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

14 to 27, a PSC U girder bridge construction method using a segment girder according to the present invention includes manufacturing an alternate segment segment girder (ASG) and a center segment segment girder (CSG) at a manufacturing site, The girder ASG and the center segment girder CSG are tensed (first tensioned) by the outer primary PS steel wires 142 and 232 and the inner primary PS steel wires 152 and 242 respectively to form the alternate segment girders ASG and ASG The load of the center segment girder CSG is borne and the alternating segment girder ASG and the center segment girder CSG are mounted on the alternating A and hypothetical B and the alternating segment girders ASG, And the central segmented girder CSG are connected and joined together by tensions (secondary tensions) of the connecting jointed PS wire 162 and the alternating segmented girder ASG is connected to the continuously connected primary PS steel wire fitter 170 It is preferred that the abdomen 130 of the secondary segment girder ASG and the front portion of the abdomen 220 of the middle segment girder CSG (Third tension) with the continuous connection primary PS steel wire 172 over the entire length of the center segment girder CSG and the concrete is placed and cured on the upper portion of the alternating segment girder ASG and the center segment girder CSG to form a slab, The entire length of the abdomen portion 130 of the alternating segment girder ASG and the abdomen portion 220 of the middle segment girder CSG in the continuously connected secondary PS steel wire fusing portion 180 of the alternating segment girder ASG Continuous connection The secondary PS wire (182) is tensioned (fourth tension) and continuous connection is made.

[Continuous bridge 1]

Fig. 28 is a vertical sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention. Fig. 1 and Fig. 29 are enlarged views of an alternate flank segment girder of Fig. 28. Fig. 30 is a cross- 29 is a cross-sectional view taken along the line BB in Fig. 29, Fig. 32 is a sectional view taken along the line CC in Fig. 29, Fig. 36 is a sectional view taken along line AA of Fig. 35, Fig. 37 is a sectional view taken along line BB of Fig. 35, Fig. 38 is a sectional view taken along line CC of Fig. 35, 41 is a sectional view taken along line EE of Fig. 35, Fig. 41 is an enlarged view of the spanwise center segment girder of Fig. 28, Fig. 42 is a sectional view taken along line AA of Fig. 41, 41 is a cross-sectional view taken along line CC of FIG. 41, FIG. 45 is a cross-sectional view taken along the line DD of FIG. 41, and FIG. 46 is a cross-sectional view taken along line EE of FIG.

As shown in these drawings, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of the upper flange 300, the lower flange 310 and the abdomen 320, A fulcrum segment girder (APSG); The upper flange 410 and the lower flange 420 and the abdomen 430 are connected to the alternating fulcrum segment girder APSG by the continuous connection primary PS strand 362 and the continuous connection secondary PS strand 372, A bridge pier segmented girder (PPSG) having a predetermined length; Is connected to the pierced point segment segment girder (PPSG) by a continuous connection primary PS strand 362 and a continuous connection secondary PS strand 372 and is connected to the upper flange 500, the lower flange 510 and the abdomen 520 And a spanwise center segment girder (SCG) having a predetermined length, wherein one side of the upper flange (300) of the alternate flank segment girder (APSG) And a thick plate lower flange 312 is formed on one side of the lower flange 310 of the alternate flank segment girder APSG to have a thickness of a certain length in the longitudinal direction An outer primary PS steel wire fusing unit 330 is installed on the lower plate lower flange 312 and an outer primary PS steel wire 332 is installed across the outer primary PS steel wire fusing unit 330 A portion spaced inwardly from the lower plate lower flange 312 by a predetermined distance, An inner primary PS steel wire fusing unit 340 is installed and an inner primary PS steel wire 342 is provided across the inner primary PS steel wire fusing unit 340 and the alternate focal point segment girder APSG A continuous connection primary PS wire fixing portion 360 is installed in the longitudinal direction at one side of the abdomen portion 320 of the continuous connection primary PS wire fixing portion 360. The continuous connection primary PS wire fixing portion 360 is provided with a continuous connection primary PS wire 362, And a continuous connection secondary PS wire fixing unit 370 is installed on the upper portion of the continuously connected primary PS wire fixing unit 360. The continuous connection secondary PS wire fixing unit 370 is provided with a continuous connection 2 A PS PSC wire fixing part 350 is installed at an upper end of the inner stomach part 320 spaced at a predetermined distance from the inside of the alternate flank segment girder APSG, A connecting joining PS steel wire 352 is installed on the steel wire fixing part 350 and the upper flange 410 of the pierced point segment segment girder PPSG is provided with a predetermined section A lower plate flange 422 is formed on both sides of the lower flange 420 of the pierced portion segment girder PPSG to have a thickness of a predetermined length in the longitudinal direction The outer plate primary flange 422 is provided with an outer primary PS steel wire fixing portion 440 and an outer primary PS steel wire 442 is provided across the outer primary steel wire fixing portion 440 An inner primary PS steel wire fusing part 450 is provided at a portion spaced apart from the steel plate lower flange 422 by a predetermined distance and an inner primary PS wire fixing part 450 is provided between the inner primary PS steel wire fusing parts 450, A piercing point PS steel wire fusing unit 480 for controlling the momentum is provided at the upper end of the middle girdle 430 of the piercing point segment segment girder PPSG, A piercing portion PS wire 482 is provided across the fusing portion 480, A connection joint PS wire fixing portion 460 is provided at the upper end of the inner side bather portion 430 spaced from the inner side of the segment girder PPSG and a connection joining PS wire portion 462 is connected to the connection joining PS wire fixing portion 460. [ And a thick plate lower flange 512 is formed at both sides of the lower flange 510 of the spanwise center segment segment girder SCG to have a predetermined thickness in the longitudinal direction. An outer primary PS steel wire 532 is provided across the outer primary PS steel wire fusing unit 530 and an inner primary PS steel wire 532 is provided between the outer bottom primary flange 512 and the inner side An inner primary PS steel wire fusing unit 540 is installed at the spaced apart portion, an inner primary PS steel wire 542 is provided across the inner primary steel wire fusing unit 540, and the span- A connecting joint PS wire wire fusing unit 550 is installed on the upper part of the abdomen 520 of the SCG, (PPSG) and span center segment segment girders (SCG) are connected and disconnected by sequential tensioning of the continuous PS primary strand 362 and the continuous secondary PS strand 372, .

The outer primary PS wire fixing portion 330 and the inner primary PS wire fixing portion 340 of the alternate flank segment girder APSG are used for primary tension and the alternating flank segment girder APSG The primary PS wire fixing unit 440 and the inner primary PS wire fixing unit 450 of the pierced point segment girder PPSG are used for connection joint tensioning. Is used for primary tension, and the joint joint PS steel wire fusing portion 460 of the bridge pier segment segment girder (PPSG) is used for joint joint tension, and the outer first side of the spanwise center segment girder (SCG) The PS wire fixing part 530 and the inner primary PS wire fixing part 540 are used for primary tension and the joint joining PS steel wire fixing part 460 of the piercing point segment girder PPSG is used for the connection joint tension It is used for.

The connection between the alternating fulcrum segment girder APSG and the bridge pier segment segment girder PSSG and the span center segment segment girder SCG is accomplished by connecting the alternating fulcrum segment girders APSG to the continuously connected primary PS liner fuselage 360 And the continuously connecting secondary PS wire fixing unit 370 to the abdomen portion 320 of the alternating flank segment girder APSG and the abdomen portion 430 and the spanwise middle segment girder SCG of the pierce point segment segment girder PPSG The continuous connection primary PS wire 362 and the continuous connection secondary PS wire 372 are tensed and connected over the entire section of the abdomen 520. [

A maintenance fusing block 390 is provided in the abdomen part 320 of the alternate flank segment girder APSG and a truss type recessed PS wire fusing part 392 is mounted on the fusing fixing block 390. [ And a trumpet-shaped concave PS steel wire fusing unit 490 is installed on the upper end of the abdomen 430 of the piercing point segment segment girder PPSG, or a direction changing unit is installed.

That is, the PSC U girder continuous bridge CB using the segment girder according to the present invention is made up of an alternating fulcrum segment girder APSG, a piercing fulcrum segment girder PPSG and a spanwise middle segment girder SCG, The fulcrum portion segment girder APSG has a structure in which one side end portion of the alternating fulcrum segment girder APSG constitutes the alternate fulcrum portion 100 and the other side end portion is connected to the piercing fulcrum segment girder PPSG, An upper flange 300 of a predetermined section is constituted by a closed upper closing flange 305 having a step 302 and the upper closing flange 305 of the closing upper flange 305 The slabs formed on the upper surface of the alternate flank segment girders APSG are formed to have a thicker slab thickness than the other slabs. The slabs formed on the upper surface of the lower flange 310 on both sides of the alternate flank segment girders APSG, Busseg An outer primary PS steel wire fusing unit 330 and an inner primary PS steel wire fusing unit 340 are installed to bear the load of the transverse girder APSG and the lower flange 310 And a connecting joint PS for connecting an alternate flank segment girder APSG to the upper surface of the lower flange 310 of the connecting joint 380 of the alternate flank segment girder APSG and the upper end of the stern 320. [ And a wire fusing unit 350 are respectively installed on the lower flange 310 and the lower flange 310 of the alternate flank segment girder APSG at the upper end of the abdomen 320 and the piercing flank segment (APSG) is connected to the end portion of the abdominal portion 320 of the alternating fulcrum segment girder APSG before and after the synthesis of the slab, The PS wire fixing portion 360 and the continuous connection secondary PS wire fixing portion 370 are respectively installed The continuous connection primary PS steel wire 362 and the continuous connection secondary steel wire 372 are provided in the entire section of the abdomen portion 320 so that the continuous connection primary steel wire 362 is strained before the slab assembly, The continuous connection secondary steel wire 372 is tensioned so that the continuous connection tension is continuously applied to the continuous secondary steel wire fixing portion 370 and the continuous connection secondary segment steel wire fixing portion 370 is continuously connected to the alternate branch portion segment girder APSG after the slab is combined. The secondary PS steel wire 372 is positioned above the continuous connected primary PS steel wire fusing unit 360 and the continuously connected primary PS steel wire 362 that are continuously connected and tense with the alternate flank segment girder APSG before the slabs are combined .

One side end of the piercing branch segment girder PPSG is connected to the alternating flank segment girder APSG and the other side end is connected to the spanwise center segment girder SCG or the pierced branch segment girder PPSG, (PPSG) is loaded at the ends of the lower flanges 420 on both sides of the bridge pier segment segment girders (PPSG), and the load of the bridge pier segment segment girders (PPSG) The outer primary PS steel wire fusing unit 440 and the inner primary PS steel wire fusing unit 450 are provided so that the outer primary PS steel wire 442 and the inner primary PS steel wire 442 of the bridge- 452 and a pierce point PS wire liner fixing portion 480 for controlling the moment of inertia is provided on the inner or outer surface of the upper end of the abdomen portion 430 of the piercing point segment segment girder PPSG, PPSG) pierced by the pivot point PS strand 482, A joint joining PS wire fixing unit 460 for connecting and joining a piercing point segment girder (PPSG) to the upper surface of the lower flange 420 of the both side joining joints 492 of each of the fulcrum side segment girders PPSG and the upper portion of the abdomen 430 Are provided to the lower flange 420 and the alternate flank segment girder APSG adjacent to the upper flange 410 and the lower flange 420 of the piercing branch segment girder PPSG at the upper end of the belly portion 430, The lower flange 420 of the bridge piercing portion 400 of the bridge pier segment segment girder PPSG is tied to the span center segment segment girder SCG by a predetermined distance The lower flange 420 is formed to have a thicker sectional thickness and the upper flange 410 has a structure in which a certain section of the upper flange 410 is formed of a closed section with a center point. Before and after the synthesis, A continuous connection primary PS wire 362 and a continuous connection secondary PS wire 372 which continuously connect the secondary segment girders PPSG are arranged and the bridge pillar segment girders PPSG are continuously connected Tensioned continuous PS secondary strand 372 is located at the upper end of the continuous connected primary PS strand 362 which continuously ties and ties the pier portion secondary segment girder (PPSG) before slab assembly.

The spanwise center segment segment girder SCG is connected to the pierced segment segment girder PPSG at both side ends of the spanwise center segment segment girder SCG and the end portion of the lower flange 510 at both sides of the spanwise center segment segment girder SCG, An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 that bear the load of the spanwise center segment girder SCG are provided on the upper surface of the spanwise center segment girder SCG The upper end of the lower flange 510 of the connecting joint portion 570 on both sides of the spanwise center segment girder SCG and the upper end of the abdomen portion 520 are tensed by the outer primary PS strand 532 and the inner primary PS strand 542, A joint joining PS steel wire fixing part 550 for joining the center part segment girders SCG to each other is provided and the upper flange 500 of the span center segment girder SCG at the upper end of the lower flange 510 and the abdomen 520, The piercing branch segment adjacent to the lower flange < RTI ID = 0.0 > 510 & (SCG) continuous and connected to each other before and after the slab combination is continuously connected to the strand center girder (SCG) of the span center segment girder (SCG) A continuous welded secondary PS steel wire 372 in which the steel wire 362 and the continuously connected secondary PS steel wire 372 are disposed and the spanwise center segment girder SCG is continuously connected and tensioned after the slabs are combined, And is located on the upper side of the continuous connection primary PS steel wire 362 which continuously ties the segment girders SCG.

The PSC U girder bridges using the segment girders according to the present invention having the above-described structure can be connected to the cross-sectional structure of the alternating-section subsegment girder (APSG), the pierce-branch subsegment girder (PPSG) The primary PS wire 362 and the secondary connection PS wire 372 are sequentially connected and connected in series.

The outer primary PS steel wire fusing part 330 and the inner primary PS steel wire fusing part 330 on the upper face of the lower flange 300 of the alternate focal point part 100, which is one side of the alternate flank segment girder APSG, 340 is a structure used only for primary tension and the joint joining PS steel wire fixing part 350 on the upper surface of the lower flange 310 of the connecting joint part 380 on the other side has a first tension and an alternate flank segment Joint PS PS steel wire fixing portion 460 (see FIG. 4) on the upper surface of the lower flange 420 of both side joint joint portions 492 of the piercing branch portion segment girder PPSG is used as a connection joint tension of the girder (APSG) Is a structure used only for connection joint tension of a pier portion-side segment girder PPSG, and is a joint-connection PS wire fixing on the upper flange 510 of both side connection joint portions 570 of the span- The portion 550 may be used for connecting tension between the primary tension and the span center segment girder (SCG) The connecting joint portion 380 of the alternating fulcrum segment girder APSG and the connecting joint portion 492 of the pierced point segment segment girder PPSG and the connecting joint portion 570 of the span central portion segment girder SCG Section of the upper flanges 300, 410, 500, the lower flanges 310, 420, 510 and the abdomen portions 320, 430, 520 are thicker than the other sections.

The continuous connection of the alternating fulcrum segment girder APSG with the piercing fulcrum segment girder PPSG and the spanwise center segment girder SCG is accomplished by the continuous connection of the alternating fulcrum segment girders APSG, A continuous connected primary PS steel wire fusing unit 360 tensioned before the slab combination located at the end of the continuous PS primary steel wire fusing unit 320 and a continuously connected secondary PS steel wire stranded after the slab combination located at the top of the continuously connected primary PS steel wire fusing unit 360, The abdomen portion 320 of the alternating flank segment girder APSG, the abdomen portion 430 of the pierced point segment segment girder PPSG, and the abdomen portion 520 of the spanwise center segment segment girder SCG in the fusing portion 370, The continuous PS primary wire 362 and the continuous secondary PS wire 372 are connected in series by tension.

The maintenance fusing block 390 is installed in the alternate focal point part 100 of the alternate focal segment girder APSG and the steel fusing fixture 390 is inserted into the maintenance fusing block 390 during maintenance A plurality of concave PS steel wire fusing parts 392 having a trumpet shape are installed so that they can be installed and a trumpet shaped concave PS steel wire fusing part 490 is formed inside the piercing fringe part 400 of the piercing fringe part segment girder PPSG. And a direction changing part through which the PS steel wire passes is provided and reinforced by an outer steel wire inside the pier portion segment segment girder (PPSG) during public use.

Hereinafter, the present invention will be described in more detail.

PSC U girder bridges using segment girders according to the present invention are classified into positive and negative part segments according to the behavior characteristics of continuous bridge girder in continuous bridge (CB), that is, (APSG), bridge pier segment segment girder (PPSG) and span center segment segment girder (SCG).

Here, the length of the alternating fulcrum segment girder APSG is from the alternate fulcrum portion 100 to the outer span of the momentum parent section, one side end is located at the alternating fulcrum portion 100, And a connecting portion of the upper flange 300 of the alternating fulcrum portion 100 of the alternating fulcrum segment girder APSG is connected to the connecting portion PSSG of the alternating fulcrum segment girder APSG. And a step 302 is formed by making the height of the closed upper flange 305 closed at the alternate fulcrum lower than the interval other than the closed interval, The thickness of the slab formed on the upper surface of the upper flange 305 is made thicker so as to attenuate the impact load of the vehicle entering the alternate flank segment girder APSG and to reduce the impact load on both sides of the alternate flank segment girder APSG The outer primary PS steel wire fusing part 330 and the inner primary PS steel wire fusing part 340, which bear the load of the alternate flank segment girder APSG, are mounted on the end of the sub flange 310 and the upper surface of the inner side lower flange 310, (First tension) with the outer primary PS steel wire 332 and the inner primary PS steel wire 342 after concrete pouring and curing.

The outer primary PS strand 332 and the inner primary PS strand 342 are connected to each other by a piercing fulcrum segment girder PPSG adjacent to the alternating fulcrum segment girder APSG and a connecting fulcrum PS strand 352, (APSG) are loaded continuously until the alternating flank segment girders APSG of the entire section, which are tense and consecutive successively, are continuously connected by the continuous connection primary PS steel wire 362.

In order to connect the alternate flank segment girder APSG and the pierce flank segment girder PPSG to the upper surface of the inner lower flange 310 of the connecting joint 380 and the upper portion of the abdomen 320, And the connecting joint PS wire 352 is tensioned (second tensioned) on the lower flange 310 and the upper flange 300 of the alternate flank segment girder APSG to form an alternate flank segment girder APSG) and pierced branch segment girder (PPSG).

The abdomen portions 320 and 430 and the upper flanges 300 and 410 of the connecting joint portion 492 of the alternating fulcrum segment segment girder APSG and the piercing segment segment girder PPSG, The outer primary PS steel wire fixing parts 330 and 440 and the inner primary PS steel wire fixing parts 340 and 450 are provided to increase the cross section of the fixing part 310 and 420 to increase the safety of the connection joint parts 380 and 492, And the safety of the fixing unit is improved.

In addition, a continuous connection primary PS wire fixing unit 360, which bear the primary continuous connection of the alternating fulcrum segment girder APSG and the load of the slab, is provided at the end portion belly 320 of the alternate flank segment girder APSG (Third tension) of the continuous connection primary PS steel wire 362 before the slab connection is established and the second continuous continuous connection 354 of the alternate-point segment steel girder (APSG) And a continuous connection secondary PS wire fixing unit 370 to bear a live load is installed to complete the continuous connection tension by tensioning the continuous connection secondary PS wire 372 after the slab is combined (fourth tension).

The continuously connected primary PS strand 362 and the continuously connected secondary PS strand 372 continuously tension and tighten the entire section of the alternating flank segment girder APSG to the belly 320, .

Further, the continuous connected secondary PS strand 372 and the continuously connected secondary PS strand fixing unit 370, which tension the alternating fulcrum segment girder APSG over the entire section after the slab combination, The girder APSG is always positioned above the continuously connected primary PS strand 362 and the continuously connected primary PS strand fixing unit 360 in the abdomen 320 over the entire section.

This is because the load of the slab is greater than the live load by the vehicle, so that the eccentric efficiency of the continuous connection primary PS steel wire 362, which imposes a load on the slab, is further increased to easily load the slab.

At the upper portion of the abdomen portion 320 of the alternating focal point portion of the alternate flank segment girder APSG, there is formed a PS wire for maintenance that can reinforce the external steel reinforcement inside the alternate flank segment segment girder (APSG) A plurality of parts 392 are used for maintenance and reinforcement.

This is because the maintenance fixing block 390 having a trumpet-shaped concave hole is installed by the form so that the steel fixing port can be inserted and inserted later if necessary without pre-installing the steel fixing port, Build a management system.

The length of the pierced segment segment girder (PPSG) is up to the innermost portion of the parentage section. One side end of the piercing branch segment segment girder (PPSG) is connected to the alternate flank segment segment girder (APSG) And each of the side end portions is connected to and joined to the spanwise center segment segment girder SCG. In the structure of the piercing portion segment segment PTSG, the pier portion segment segment girder (SCG) The length of the PPSG is up to within the root section of the inner flank. A certain section of the upper flange 410 of the bridge piercing section 400 is formed as a closed section to increase the tensile resistance. .

The outer side primary PS wire fixing portion 440 and the inner primary side PS wire fixing portion 440 which bear the load of the piercing branch portion segment girder PPSG are fixed to the end portions of the lower flanges 420 on both side surfaces of the pierced point portion segment girder PPSG. (Primary tension) by the outer primary PS steel wire 442 and the inner primary PS steel wire 452 and the upper inner surface of the abdomen portion 430 of the piercing-point segment segment girder PPSG Or a piercing point PS wire liner fixing unit 480 for bearing the control of the moment on the outer surface is installed and is tilted (fifth tension) to the upper flange 410 by the piercing point PS wire 482 after the slab is installed Increases the tensile resistance of the mandible.

A connecting joint PS wire fixing portion 460 for connecting the pierced portion segment girders PPSG is formed on the upper surface of the inner side lower flange 420 of the bridge portion segment segment girder PPSG and the upper portion of the abdomen portion 430, (Second tension) to the lower flange 420 and the upper flange 410 of the bridgehead segment segment girder PPSG to form adjacent alternate focal segment segment girders APSG and span center segment segment girders SCG, And the connection joint PS wire fixing portion 460 is used only for the connection joint PS wire 462.

The upper and lower flanges 410 and 420 and the abdomen 430 of the piercing segment segment girder PPSG connection joint are formed to have a thicker section than the other sections so that the connecting joints of the piercing segment segment girders PPSG, Increases performance.

The lower flange 420 of the bridge piercing portion 400 of the bridge pier segmented girder PPSG is formed such that the section of the lower flange 420 is thicker than the other portion of the bridge piercing portion 400, So that the compression resistance is increased.

A continuous connected primary PS strand 362 and a continuous connected secondary PS strand 372 coming from the abdomen 320 of the alternating flank segment girder APSG are connected to the abdomen 430 of the pierced point segment girder PPSG. ) Are continuously arranged and continuously connected to each other in the continuous section of continuously connected alternating-section segment segment girders (APSG) and span-wide segment segment girders (SCG).

In addition, a PS steel wire fusing unit 472 having a trumpet-shaped hole in which the outer steel wire fixing steel reinforcing steel fixing member is not inserted for maintenance is provided on the upper end of the inner concrete partition wall 470 of the pierced portion segment girder (PPSG) Thereby forming a direction switching portion through which the light passes.

The spanwise center segment girder SCG is a portion of the inner diameter of the longitudinal moment segment segment girder and the length of the spanwise center segment girder SCG is up to the midpoint interval between the inner diameters. And the spigot portion segment girder SCG has a structure in which the end portions of the lower flange 510 on both sides of the spanwise center segment girder SCG and the both side inner side lower portions An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 which bear the load of the spanwise center segment girder SCG are respectively installed on the upper surface of the flange 510 and the span center segment girder SCG (Primary tension) to the lower flange 510 of the piercing branch segment segment PPSG and connected to the adjacent pier point segment segment girder PPSG, and the entire section of the sequentially successively pierced branch segment segment girder PPSG is continuous The center girder SCG is designed to bear the load of the span center segment girder SCG until it is continuously connected by the primary PS steel wire 362. The spanwise center segment girder SCG is connected to the piercing branch segment girder PPSG A connecting joint PS steel wire fusing unit 550 is installed on the upper surface of the both side inner bottom flange 510 and the upper portion of the abdomen 520 and connected to the lower flange 510 and the upper flange 500 of the spanwise center segment girder SCG. (Second tension) of the jointed PS steel wire 552 to strongly connect and bond the span center segment segment girder SCG and the pierce segment segment segment girder PPSG.

The upper flange 500 and the lower flange 510 and the abdomen 520 of the connecting joint portion 570 on both sides of the span center segment segment girder SCG are formed to have a thicker section than the other portions to form the span center segment girder SCG).

The continuous connection primary PS strand 362 coming from the alternating flank segment girder APSG and the pierce point segment segment girder PPSG is connected to the abdomen 520 of the spanwise center segment girder SCG, The steel wire 372 is arranged to continuously connect and tighten the entire section of the continuous span center segment girder SCG and functions to control the longitudinal stiffness.

The PSC U girder continuous bridge (CB) using the segment girder according to the present invention having the above-described structure is constructed of the alternate flank segment girder (APSG), the bridge pier segment segment girder (PPSG) and the spanwise center segment segment girder Sectional structure and the sequential connection of the continuous PS primary wire 362 and the continuous secondary PS wire 372 to each other.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

As shown in FIGS. 28 to 46, a PSC U girder bridge construction method using a segment girder according to the present invention includes an alternate flank segment girder (APSG), a bridge flank segment segment girder (PPSG), and a span center segment segment girder (SCG) And the span portion segment girder PPSG and the span center segment segment girder SCG are formed on the outer primary PS steel wires 332, 442, 532 and the inner first primary (Primary tension) with the PS steel wires 342, 452 and 542 to bear the loads of the alternating flank segment segment girders APSG, piercing segment segment segment girders PPSG and span center segment segment girders SCG, (A), a bridge (P), and a hypothetical vent (B), wherein the fulcrum segment segment girders (APSG), the bridge segment segment segment girders (PPSG) and the spanwise center segment segment girders (SCG) Girder (APSG), pierce section, segment girder (PPSG) and span The secondary PS wire fixing unit 360 of the alternate flank segment girder APSG is connected to the secondary segment wire girder SCG by connecting and joining joint joining PS steel wires 352, 462 and 552 with each other The continuous connected primary PS steel wire 362 extends over the entire section of the alternating flank segment girder APSG and the pier portion segment segment girder PPSG and the spanwise segment segment girder SCG. (Third tension), and the slab is formed by placing and curing concrete on the upper portion of the alternating fulcrum segment segment girder APSG, the piercing segment segment segment girder PPSG and the span center segment segment girder SCG, The continuously connected secondary PS steel wire fusing unit 370 of the alternating flank segment girder APSG has the alternating flank segment girder APSG, the piercing flank segment girder PPSG and the spanwise middle segment girder SCG's abdomen 320 , 430, and 520) are continuously tensioned (fourth-order tension) by the continuous PS secondary strand 372, To W consecutive connections, the angle of intersection point portion girder segments (PPSG) of piers point unit PS wire tension to the fixing unit 480 piers point unit PS liner 482 from (the fifth strain) is constructed continuously connected.

[Continuous bridge 2]

FIG. 47 is a vertical sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention; FIG. 2 and FIG. 48 are enlarged views of an alternate flank segment girder of FIG. 47; 48 is a sectional view taken along line BB of Fig. 48, Fig. 52 is a sectional view taken along line DD of Fig. 48, Fig. 53 is a sectional view taken along the line EE of Fig. 48, 55 is an enlarged view of the bridgehead segment girder of Fig. 47, Fig. 56 is a sectional view taken along line AA of Fig. 55, Fig. 57 is a sectional view taken along the line BB of Fig. 55, 59 is a sectional view taken along the line DD of FIG. 55, FIG. 60 is a sectional view taken along the line EE of FIG. 55, FIG. 61 is an enlarged view of the alternate flank segment girder of FIG. 47, 61 is a sectional view taken along the line BB of Fig. 61, Fig. 64 is a sectional view taken along line CC of Fig. 61, Fig. 65 is a sectional view taken along line DD of Fig. 61, and Fig. 66 is a sectional view taken along line EE of Fig.

As shown in these drawings, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of the upper flange 300, the lower flange 310 and the abdomen 320, A fulcrum segment girder (APSG); The upper flange 410 and the lower flange 420 and the abdomen 430 are connected to the alternating fulcrum segment girder APSG by the continuous connection primary PS strand 362 and the continuous connection secondary PS strand 372, A bridge pier segmented girder (PPSG) having a predetermined length; Is connected to the pierced point segment segment girder (PPSG) by the continuous connection primary PS wire 362 and the continuous connection secondary PS wire 372 and is connected to the upper flange 500, the lower flange 510 and the abdomen 520 And a spanwise center segment girder (SCG) having a predetermined length, wherein a certain length is protruded and extended outward along the longitudinal direction on both sides of the alternate flank segment girder (APSG) The outer plate primary flange 312 is provided with an outer primary PS steel wire fusing section 330 and the outer primary steel wire fusing section 330 is provided with a lateral An inner primary PS steel wire fusing part 340 is provided at a portion spaced apart from the steel plate lower flange 312 by a predetermined distance and an inner primary PS steel wire fixing part 340 is provided, An inner primary PS steel wire 342 is provided across the portion 340, A continuous connection primary PS wire fixing portion 360 is provided at one side of the abdomen portion 320 of the large-end portion segment girder APSG in the longitudinal direction, and the continuous connection primary PS wire fixing portion 360 is provided with a continuous connection A primary PS wire 362 is installed and a continuous connection secondary PS wire fixing unit 370 is installed on the upper portion of the continuously connected primary PS wire fixing unit 360, A continuous PS secondary wire 372 is provided on the inner side of the inner abdominal portion 320 spaced from the inner side of the alternate flank segment girder APSG by a connecting joint PS wire fixing portion 350, A connecting joint PS steel wire 352 is installed on the joint joining PS steel wire fixing part 350 and an upper surface of the upper flange 410 of the bridgegear section segment girder PPSG And the lower flange 420 of the pierced portion segment girder PPSG is formed with a length The outer plate primary flange 422 is provided with an outer primary PS steel wire fusing portion 440 and the outer primary steel wire fusing portion 440 An outer primary PS steel wire 442 is installed across the gap between the lower plate flange 422 and the inner primary PS steel wire fusing unit 450. The inner primary PS steel wire fusing unit 450 is installed at a portion spaced apart from the lower plate lower flange 422 by a predetermined distance, An inner primary PS steel wire 452 is provided across the secondary PS wire fixing portion 450 and an upper portion of the middle gird portion 430 of the piercing branch portion segment girder PPSG is provided with a pierce point portion A PS steel wire fusing unit 480 is installed and a piercing point PS steel wire 482 is provided across the pier point fulcrum PS wire fusing unit 480 and the inside of the piercing fulcrum segment girder PPSG A connection joint PS wire fixing portion 460 is provided at an upper end of the inner abdomen portion 430 spaced apart by a predetermined distance, A joint joining PS steel wire 462 is installed on the joint PS steel wire fixing part 460 and on both sides of the lower flange 510 of the spanwise center segment girder SCG, And an outer primary PS steel wire fixing unit 530 is installed on the bottom plate lower flange 512. The outer primary PS steel wire fixing unit 530 is disposed between the outer primary PS steel wire fixing unit 530 and the outer primary PS steel wire And an inner primary PS wire fixing portion 540 is provided at a portion spaced inwardly from the rear plate lower flange 512. An inner primary PS wire fixing portion 540 is provided between the inner primary PS wire fixing portion 540 and the inner primary PS wire fixing portion 540, A primary PS strand 542 is installed and a connecting joining PS steel wire fixing part 550 is installed at the upper end of the abdomen 520 of the spanwise center segment girder SCG to connect the alternate flank segment girder APSG The secondary segment girder (PPSG) and the span center segment girder (SCG) are continuously connected to the continuous connection primary PS steel wire (362) It is connected and joined by a sequential line tension of 372.

The outer primary PS wire fixing portion 330 and the inner primary PS wire fixing portion 340 of the alternate flank segment girder APSG are used for primary tension and the alternating flank segment girder APSG The primary PS wire fixing unit 440 and the inner primary PS wire fixing unit 450 of the pierced point segment girder PPSG are used for connection joint tensioning. Is used for primary tension, and the joint joint PS steel wire fusing portion 460 of the bridge pier segment segment girder (PPSG) is used for joint joint tension, and the outer first side of the spanwise center segment girder (SCG) The PS wire fixing part 530 and the inner primary PS wire fixing part 540 are used for primary tension and the connecting joint PS wire fixing part 550 of the spanwise center segment girder SCG is used for connection joint tension .

The connection between the alternating fulcrum segment girder APSG and the bridge pier segment segment girder PSSG and the span center segment segment girder SCG is accomplished by connecting the alternating fulcrum segment girders APSG to the continuously connected primary PS liner fuselage 360 430 and 520 of the alternating flank segment girder APSG, the pierced flank segment girder PPSG and the spanwise middle segment girder SCG from the continuously connected secondary PS wire fender 370 The continuous connection primary PS wire 362 and the continuous connection secondary PS wire 372 are tensed and connected.

A maintenance fusing block 390 is provided in the abdomen part 320 of the alternate flank segment girder APSG and a truss type recessed PS wire fusing part 392 is mounted on the fusing fixing block 390. [ And a trumpet-shaped concave PS steel wire fusing unit 560 is installed on the upper end of the abdomen 520 of the pierced point segment segment girder (PPSG), or a direction changing unit is installed.

That is, the PSC U girder continuous bridge (CB0) using the segment girder according to the present invention is made up of an alternating flank segment girder (APSG), a bridge flank segment segment girder (PPSG) and a span center segment segment girder (SCG).

One side end of the alternating flank segment girder (APSG) constitutes an alternating fulcrum portion (100) and the other side end portion is connected to the piercing fulcrum segment girder (PPSG), and the alternate fulcrum segment The upper flange 300 of a certain section has a closed structure with the step 302 and the slab formed on the upper surface of the closed upper flange 305 is formed in the alternate focal point portion 100 of the girder APSG The outer flange 310 of the alternate flank segment girder APSG and the upper flange 310 of the inner side of both sides of the alternate flank segment girder APSG are formed with an outer side The primary PS wire fixing portion 330 and the inner primary PS wire fixing portion 340 are installed respectively so that the outer primary PS wire 332 and the inner primary PS wire 342 of the alternate flank segment girder APSG are installed, And the connecting joint 380 of the alternating fulcrum segment girder APSG, And a connecting joint PS wire fixing portion 350 for connecting the alternate flank segment girders APSG to the upper portion of the lower flange 310 and the upper portion of the abdomen portion 320, 320 and at the top of the alternating flank segment girder APSG and the pierce flank segment girder PPSG adjacent to the upper flange 300 and the alternate flank segment girder APSG, A continuous connection primary PS wire fixing unit 360 and a continuously connected secondary PS wire fixing unit 360 are connected to the end portion of the abdomen 320 of the alternating focal point portion 100 of the alternating focal point segment 100, And a continuous connection primary PS wire 362 and a continuous connection secondary PS wire 372 are provided in the whole section of the abdomen 320. The composite wire is connected to the continuous connection primary PS wire (362) is tense, and after the slab combination, the continuous connection secondary PS steel wire (372) is tensioned And the continuously connected secondary PS steel wire fusing unit 370 and the continuous connected secondary PS steel wire 372, which are continuously connected to each other, are continuously tensioned and connected to the alternate flank segment girder (APSG) after the slabs are combined. And is positioned above the continuous connection primary PS wire fixing portion 360 and the continuous connection primary PSPS wire 362 which continuously connect and tighten the branch portion segment girder APSG

One side end of the piercing branch segment girder PPSG is connected to the alternating flank segment girder APSG and the other side end is connected to the spanwise center segment girder SCG or the pierced branch segment girder PPSG, And the end portions of the lower flange 420 on both sides of the pierced portion segment girder PPSG bear the load of the pierced portion segment girder PPSG. The outer primary PS steel wire fusing unit 440 and the inner primary PS steel wire fusing unit 450 are installed so that the outer primary PS steel wire 442 and the inner primary PS steel wire 452 of the bridge- And a piercing point PS steel wire fusing unit 480 for controlling the moment of inertia is provided on the inner surface or the outer surface of the upper end of the abdomen portion 430 of the piercing point segment segment girder PPSG, Is tensed by the piercing-point PS strand 482 of the bridge pier, A joint joining PS steel wire fusing unit 460 for joining the pierced portion segment girders (PPSG) to the upper surface of the lower flange 420 of both side joint joint portions 492 of the point segment girder PPSG and the upper portion of the abdomen portion 430 (APSG) adjacent to the upper flange 410 and the lower flange 420 at the upper end of the lower flange 420 and the upper portion of the abdomen 430, And the lower flange 420 of the pierced portion segment girder PPSG is longer than the other portion of the pierced portion 400 with respect to the pierced fulcrum portion 400, And the upper flange 410 is formed of a closed section with a predetermined interval centered on the bridge piercing portion 400. The pier portion 430 of the bridge pier segmented girder PPSG is provided with a pierce portion Opening of branch segment segment girder (PPSG) A continuous connected secondary PS liner 362 in which a continuous connection primary tensioned strand 362 and a continuous connected secondary PS strand 372 are disposed and a continuous connection tensioned pier portion segmented girder (PPSG) (372) is positioned at the upper end of the continuous connected primary PS steel wire (362) which continuously ties and ties the pierced portion segment girders (PPSG) before slab assembly.

The spanwise center segment segment girder SCG is connected to the pierced segment segment girder PPSG at both side end portions and is connected to both ends of the lower flange 510 on both sides of the spanwise center segment segment girder SCG, An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 which bear the load on the spanwise center segment girder SCG are respectively installed on the upper surface of the inner side lower flange 510 of the side surface SCG, A spanwise center segment girder SCG is formed on the upper surface of the lower flange 510 of both side connecting joints 570 of the spanwise center segment girder SCG and the upper portion of the abdomen 520, And a joint joining PS steel wire fixing part 550 for joining the upper and lower flanges 510 and 520 to the lower flange 510 and the upper flange 500 and the lower flange 510 of the span center segment girder SCG at the upper end of the abdomen 520, Adjacent bridge (SCG) continuously before and after the slab combination and continuously after the slab are connected to the sub-segment girder (SCG) of the span center segment girder (SCG) A PS continuous strand 362 and a continuously connected secondary PS strand 372 are disposed and the continuous connected secondary PS strand 372 in which the spanwise middle segment girder SCG is continuously connected and tensioned after the slabs are combined, And has a structure in which the center segment girder SCG is located at the upper end of the continuous connection primary PS steel wire 362 which continuously tensions and tensions.

The PSC U girder continuous bridge CB using the segment girder according to the present invention having the above-described structure is constructed of the alternate-end segment segment girder APSG, the piercing segment segment segment G (PPSG) and the span- Sectional structure and the sequential connection of the first-stage PS wire 362 and the second-stage PS wire 372 connected in series.

The outer primary PS steel wire fusing part 330 and the inner primary PS steel wire fusing part 340 located on the upper flange 310 of the alternate focal point part 100, which is one side of the alternate flank segment girder APSG, The connecting joint PS wire fixing portion 350 on the upper surface of the lower flange 310 of the connecting joint portion 380 on the other side is used for the first tension and the first tension and the alternate branch portion segment girder APSG The connecting joint PS wire fixing portion 460 on the upper surface of the lower flange 420 of the both side connecting joint portions 492 of the piercing branch portion segment girder PPSG has a structure in which the alternating point Joint PS PS steel wire fixing portion 550 on the upper surface of the lower flange 510 of both side joint joining portions 570 of the span center segment girder SCG is used only for connection joint tension of the sub segment girder APSG. Is used for primary tension and connection joint tension of span center segment girder (SCG). And the upper flanges 300, 410, 500 of the connecting joints 380, 492, 570 of the alternating fulcrum segment girder APSG, the piercing fulcrum segment girder PPSG and the span center segment girder SCG The lower flanges 310, 420, and 510 and the abdomen 320, 430, and 520 have a thicker section than the other sections.

The continuous connection of the alternating fulcrum segment girder APSG and the piercing fulcrum segment girder PPSG and the spanwise center segment girder SCG is accomplished by a continuous connection of the slab located at the end of the upper stern portion 320 of the alternating fulcrum segment girder APSG, The continuous PS secondary wire fixing unit 360 that is tense before the synthesis and the continuous secondary PS wire fixing unit 370 that is tense after the slab combination located at the upper end of the continuously connected primary PS wire fixing unit 360, Continuous continuous primary PS strand 362 and continuously connected secondary strand 362 over the entire section of the subsegment girders APSG, pierced segment subsegment girders PPSG, spanwise segment segment girders SCG, The PS wire 372 is tensed and connected continuously.

A maintenance fusing block 390 is provided in the alternating focal point portion 100 of the alternate focal segment girder APSG and the steel fusing fixture is inserted into the maintenance fusing block 390 during maintenance. A plurality of concave PS steel wire fusing parts 392 having a trumpet shape are installed so that they can be installed and a trumpet shaped concave PS steel wire fusing part 490 is formed inside the piercing fringe part 400 of the piercing fringe part segment girder PPSG. And a direction changing part through which the PS steel wire passes is provided and reinforced by an outer steel wire inside the pier portion segment segment girder (PPSG) during public use.

The lower end of the alternating fulcrum portion 100 of the alternating fulcrum segment girder APSG may be formed only of the lower flange 310 by spacing the abdomen portion 320 and the upper flange 300 inwardly by a certain distance, (310) is formed to have a thicker section than the medial portion.

Hereinafter, the present invention will be described in more detail.

The PSC U girder bridges using segment girders according to the present invention are characterized in that in the continuous bridge (CB), the segment girders are divided into a fixed section and a segmented section girder according to the behavior characteristics of the continuous bridge girder, A segment girder which can be formed is constructed.

The length of the alternating fulcrum segment girder APSG is the outer span length segment girder APSG, the length of the alternating fulcrum segment girder APSG is from the alternate fulcrum portion 100 to the outer span parent moment interval, And the other side end portion is connected to the piercing branch portion segment girder PPSG. In the configuration of the alternate flank segment girder APSG, the alternate flank segment girder APSG The upper end of the upper flange 310 is formed as a closed end face and the other end of the upper end flange 310 is formed as an open end face and the upper end flange 310 of the closed upper end flange 305 The height of the slab formed on the upper surface of the closed upper flange 305 is made thicker than that of the portion of the vehicle that enters the alternate flank segment girder APSG, And the outer side primary flange 310 and the upper side inner flange 310 of the alternate flank segment girder APSG are provided with an outer primary side load bearing the load of the alternating flank segment girder APSG The PS primary wire fixing unit 340 and the inner primary PS wire fixing unit 350 are installed to place the primary primary PS wire 342 and the primary primary PS wire 352 after concrete pouring and curing, )do.

The outer primary PS steel wire 342 and the inner primary PS steel wire 352 are connected to each other by a piercing point segment girder PPSG and a connecting joint PS steel wire 352, The joints are tensioned and are subjected to the load of the alternate flank segment girder (APSG) until the alternating flank segment girders (APSG) of successively consecutive continuous sections are successively connected by the continuous connection primary PS steel wire (362) to be.

In order to connect the alternating fulcrum segment girder APSG and the piercing fulcrum segment girder PPSG to the upper side of the inner lower flange 310 of the connecting joint portion 380 and the upper portion of the abdomen portion 320, And the connecting joint PS wire 352 is tensioned (second tensioned) by the lower flange 310 and the upper flange 300 of the alternate flank segment girder APSG to form an alternate flank segment girder (APSG) and the pierced branch segment girder (PPSG).

The abdomen portions 320 and 430 and the upper flanges 300 and 410 and the lower flanges 310 and 420 of the connecting joint portions 380 and 492 of the alternate flank segment girder APSG and the piercing flank segment girder PPSG The outer primary PS wire fixing portion 330 and the inner primary PS wire fixing portion 340 are increased to increase the cross-sectional area of the outer primary PS wire fixing portion 340 330 and the inner primary PS wire fixing portion 340 are secured.

The end portion belly portion 320 of the alternating fulcrum segment girder APSG is connected to the primary continuous connection of the alternating fulcrum segment girders APSG and the continuous connection primary PS liner fuselage 360 bearing the loads of the slabs (Third tension) of the continuously connected primary PS steel wire 362 before the slab is assembled, and the second continuous steel wire strand 362 of the alternating secondary segment wire girder (APSG) A continuous connection secondary PS wire fixing unit 370 is installed to bear the connection and live load, and the continuous connection secondary PS wire 372 is tensed (fourth tension) after the slab combination to complete the continuous connection tension.

The continuously connected primary PS strand 362 and the continuously connected secondary PS strand 372 are continuously connected and tightened to the abdomen 320 by the entire section of the alternate flank segment girder APSG, Control function.

The continuously connected secondary PS strand 372 and the continuously connected secondary PS strand fixing unit 370, which tense the alternate flank segment girder APSG over the entire section after the slab combination, The girder APSG is always positioned above the continuously connected primary PS strand 362 and the continuously connected primary PS strand fixing unit 360 in the abdomen 320 over the entire section.

This is because the load of the slab is greater than the live load by the vehicle, so that the eccentric efficiency of the continuous connection primary PS steel wire 362, which imposes a load on the slab, is further increased to easily load the slab.

The outer primary PS steel wire fusing part 330 and the inner primary PS steel wire fusing part 340 installed on the upper surfaces of the inner side lower flanges 310 of the alternate flank segment girders APSG are connected to the primary side And the joint joining PS steel wire fixing part 350 in the joining joint part 380 is used as both a primary PS steel wire fixing and a joint joining PS steel steel.

The upper portion of the abutment portion 100 of the alternate flank segment segment girder APSG is provided with a PS steel wire fuselage portion for maintenance which is capable of reinforcing outer steel reinforcements inside the alternate- (394) are used for maintenance and reinforcement.

It is possible to install a concrete fixation block with a trumpet-shaped concave hole by a mold so that a steel fixture can be inserted later if necessary without installing a steel fixture in advance, so that a maintenance system can be constructed simply by minimizing the construction cost when constructing a bridge .

When the alternating fulcrum portion 100 consisting of the lower flange 310 spaced inward from the upper flange 300 and the abdomen portion 320 is formed in the upper portion of the alternate fulcrum portion 100, It is possible to minimize the interference of obstacles at the rear surface during the tension construction of the steel wire 362 and the continuous connection secondary PS steel wire 372, thereby facilitating the installation.

In this case, the lower flange 310 above the alternating fulcrum 100 forms a thicker section than the inner side.

One end of the piercing segment segment girder (PPSG) is connected to the alternating fulcrum segment girder (APSG) and the other end portion of the piercing fulcrum segment girder (PPSG) And each of the side end portions is connected to and joined to the spanwise center segment segment girder SCG. In the structure of the piercing portion segment segment PTSG, the pier portion segment segment girder (SCG) The length of the PPSG is within the section of the moment of the inner flank and a certain section of the upper flange 410 of the piercing focal point portion 400 is formed as a fused cross section to increase the tensile resistance, Side end portions of the lower flanges 420 of the pierced segment side segment girders PPSG include an outer primary PS wire fixing portion 440 and a primary primary PS wire fixing portion 440 which bear the load of the piercing- (Primary tension) by the outer primary PS wire 442 and the inner primary PS wire 452 and the abdomen portion 430 of the pierce point segment segment girder PPSG (Fifth tension) by the piercing-point portion PS steel wire 482 after the slab is poured, and the pendulum-side PS steel wire fixing portion 480 is placed on the inner or outer surface of the upper portion. Increases negative tensile strength.

A connecting joint PS wire fixing portion 460 for connecting the pierced portion segment girders PPSG is formed on the upper surface of the inner side lower flange 420 of the bridge portion segment segment PPSG and the upper portion of the abdomen portion 430 (Second tension) by the joint joining PS steel wire 462 of the bridge pier segment segment girder (PPSG) to jointly connect the adjacent bridge pier segment segment girders (PPSG), and the joint joining PS steel wire fixing Portion 460 is dedicated for connection joint PS wire.

The upper flange 410, the lower flange 420 and the abdomen 430 of the connection part of the piercing branch segment segment PPSG are formed to have a thicker section than the other sections to connect the piercing branch segment girder PPSG Thereby increasing the bonding performance.

In addition, the lower flange 420 of the pierced portion segment girder (PPSG) has a section of the lower flange 420 that is thicker than the other portion of the pierced point portion 400, thereby increasing the compression resistance .

A continuous connected primary PS strand 362 and a continuous connected secondary PS strand 372 coming from the abdomen 320 of the alternating flank segment girder APSG are connected to the abdomen 430 of the pierced point segment girder PPSG. ) Are continuously arranged and continuously connected to the continuously connected pier portion segment segment girder (PPSG).

In addition, a PS steel wire fusing unit 472 having a trumpet-shaped hole in which the outer steel wire fixing steel reinforcing steel fixing member is not inserted for maintenance is provided on the upper end of the inner concrete partition wall 470 of the pierced portion segment girder (PPSG) Thereby forming a direction switching portion through which the light passes.

The spanwise center segment segment girder SCG is a portion of the inner span segment segment girder with a length of the span center segment segment girder SCG up to the interval between the inner diameters of the segment span SCG, And the spigot portion segment girder SCG has a structure in which the end portions of the lower flanges 510 on both sides of the spanwise center segment girder SCG, An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 which bear the load of the spanwise center segment girder SCG are respectively installed on the upper surface of the flange 510 to form a spanwise center segment girder SCG, (Primary tension) with the primary primary PS wire 532 and the primary primary PS wire 542 of the sprung mass segment girder PPSG and connected to the adjacent bridge pier segment segment girders PPSG, (SC G are loaded continuously on the spanwise center segment girder SCG until they are continuously connected by the continuous connection primary PS steel wire 362 and the spanwise center segment girder SCG is a bridge span segment girder A connecting jointed PS wire fixing part 560 is provided on the upper surface of the both side inner lower flange 510 and the upper part of the abdomen part 520 for joint connection with the connecting joint PS wire 562 of the spanwise center segment girder SCG, (Second tension) to tightly connect and bond each of the spanwise center segment girders SCG.

The joint joining PS steel wire fixing part 550 on both sides of the inner side lower flange 510 of the spanwise center segment girder SCG is structured to be used also as primary PS steel wire fixing and joint joining PS steel wire, The upper flange 500, the lower flange 510 and the abdomen 520 of the connection joint 570 are formed to have a thicker section than the other sections to increase the connecting joint performance of the spanwise center segment girder SCG.

The continuous connection primary PS strand 362 coming from the alternating flank segment girder APSG and the pierce flank segment girder PPSG and the continuously connected secondary PS strand 362 are connected to the span 520 of the spanwise center segment girder SCG. The entire section of the continuous alternating fulcrum segment girder APSG and the piercing fulcrum segment girder PPSG and the span center segment girder SCG is continuously connected and tightly connected to the abdomen 520 with the steel wire 372 disposed thereon, It controls the moment of inertia.

The PSC U girder bridges using the segment girders constructed as described above have a cross-sectional structure of the alternate focal segment segment girders (APSG) and the pier portion segment segment girders (PPSG) and the spanwise center segment segment girders (SCG) (362) and the continuous PS secondary wire (372) are sequentially connected and connected in series.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

As shown in FIGS. 47 to 66, the PSC U girder bridge construction method using the segment girder according to the present invention includes an alternate flank segment girder (APSG), a bridge flank segment segment girder (PPSG), and a span center segment segment girder (SCG) And the span portion segment girder PPSG and the span center segment segment girder SCG are formed on the outer primary PS steel wires 332, 442, 532 and the inner first primary (Primary tension) with the PS steel wires 342, 452 and 542 to bear the loads of the alternating flank segment segment girders APSG, piercing segment segment segment girders PPSG and span center segment segment girders SCG, (A), a bridge (P), and a hypothetical vent (B), wherein the fulcrum segment segment girders (APSG), the bridge segment segment segment girders (PPSG) and the spanwise center segment segment girders (SCG) Girder (APSG), pierce section, segment girder (PPSG) and span The secondary PS wire fixing unit 360 of the alternate flank segment girder APSG is connected to the secondary segment wire girder SCG by connecting and joining joint joining PS steel wires 352, 462 and 552 with each other The continuous connected primary PS steel wire 362 extends over the entire section of the alternating flank segment girder APSG and the pier portion segment segment girder PPSG and the spanwise segment segment girder SCG. (Third tension), and the slab is formed by placing and curing concrete on the upper portion of the alternating fulcrum segment segment girder APSG, the piercing segment segment segment girder PPSG and the span center segment segment girder SCG, The continuously connected secondary PS steel wire fusing unit 370 of the alternating flank segment girder APSG has the alternating flank segment girder APSG, the piercing flank segment girder PPSG and the spanwise middle segment girder SCG's abdomen 320 , 430, and 520) are continuously tensioned (fourth-order tension) by the continuous PS secondary strand 372, To W consecutive connections, the angle of intersection point portion girder segments (PPSG) of piers point unit PS wire tension to the fixing unit 480 piers point unit PS liner 482 from (the fifth strain) is constructed continuously connected.

[Continuous bridge 3]

Fig. 67 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention, Fig. 3 and Fig. 68 are enlarged views of an outer side segment girder of Fig. 67, Fig. 69 is a cross- 68 is a sectional view taken along the line BB in Fig. 68, Fig. 71 is a sectional view taken along the line CC in Fig. 68, Fig. 72 is a sectional view taken along line DD of Fig. 68, Fig. 73 is a sectional view taken along line EE of Fig. 68, 75 is an enlarged view of the span center segment girder of Fig. 67, Fig. 76 is a sectional view taken along line AA of Fig. 75, Fig. 77 is a sectional view taken along the line BB of Fig. 75, 75, and Fig. 80 is a sectional view taken along line EE of Fig.

As shown in these figures, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of an upper flange 600, a lower flange 610 and a belly portion 620, A segment girder (OSG); Connected to the outer side segment girder OSG by a continuous connection primary PS wire 672 and a continuous connection secondary PS wire 682 and formed by an upper flange 500, a lower flange 510 and a belly 520 , And a spanwise center segment girder (SCG) having a predetermined length, wherein the upper portion flange (600) of the outer side segment girder (OSG) is a closed upper flange And a bottom plate flange 612 having a predetermined thickness in the longitudinal direction is formed on both sides of the bottom flange 610 of the outer side segment girder OSG, And an outer primary PS steel wire 632 is provided across the outer primary PS steel wire fusing unit 630. The outer primary PS steel wire fixing unit 630 is installed between the outer side primary flange 612 The part spaced inward from the fixed interval is an inner primary PS steel wire fixing part ( An inner primary PS steel wire 642 is provided across the inside primary PS wire fixing portion 640 and a side portion of the abdomen portion 620 of the outside side segment girder OSG And a continuous connection primary PS wire 672 is installed in the continuous connection primary PS wire fixing part 670. The continuous connection primary PS wire fixing part 670 is connected to the continuous connection primary PS wire fixing part 670, A continuous connection secondary PS wire fixing portion 680 is provided on the upper portion of the fixing portion 670 and a continuous connection secondary PS wire 682 is installed on the continuous connection secondary PS wire fixing portion 680, A connecting joint PS wire wire fusing unit 660 is provided at the upper end of the inner stern portion 620 which is spaced apart from the inside of the outer segment girder OSG by a predetermined distance and the connecting joint PS wire wire 662 And on both side portions of the lower flange 510 of the spanwise center segment girder SCG, And the outer primary PS wire fixing portion 530 is provided on the bottom plate lower flange 512 and the outer primary PS wire fixing portion 530 is provided across the outer primary PS wire fixing portion 530, An inner primary PS wire fixing portion 540 is provided at a portion spaced inwardly from the rear plate lower flange 512 and is disposed between the inner primary PS wire fixing portion 540 And a connecting joint PS steel wire fusing unit 550 is installed at the upper end of the abdomen portion 520 of the spanwise center segment girder SCG so that the outer side segment girder OSG and the span- The segment girders SCG are connected and bonded by the sequential tension of the spliced PS strand 662. [

In addition, the outer primary PS wire fixing portion 630 and the inner primary PS wire fixing portion 640 of the outer side segment girder OSG are used for primary tension, and the outer primary segment wire girder OSG The outer joint primary PS wire fixing portion 530 and the inner primary PS wire fixing portion 540 of the spanwise center segment girder SCG are used for joint tension It is used for car tension.

The continuous connection of the outer side segment girder OSG and the spanwise center segment girder SCG is performed by connecting the continuous connection primary PS wire fixing portion 670 of the outer side segment girder OSG to the continuous connection secondary PS wire fixing portion 680 , The continuously connected primary PS strand 672 and the continuous connected secondary PS strand 682 are strained over the entire section of the outer segment girder OSG and the span 620, 520 of the span center segment girder SCG Connect continuously.

A maintenance fixing block 700 is provided in the abdomen portion 620 of the outer side segment girder OSG and a truss-shaped concave PS wire fixing portion 710 is installed in the maintenance fixing block 700 And a trumpet-shaped concave PS wire fixing portion 720 is installed on the upper portion of the abdomen portion 620 of the outer side segment girder OSG, or a direction changing portion is provided.

That is, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of an outer segment segment girder OSG and a spanwise center segment segment girder SCG, wherein the outer segment segment girder OSG has an alternating- (OSG) in which the segment girder (APSG) and the bridge pier segment segment girder (PPSG) are integrated into one, and the alternate fulcrum portion (100) and the bridge piercing portion (400) of the outer side segment girder The upper flange 600 of the section forms a closed upper closing flange 605 with the step 602 and the slab formed on the upper face of the closing upper flange 605 of the alternating focal point portion 400 has a cross section And an outer primary PS steel wire fusing portion (load bearing portion) 630 for bearing the load of the outer side segment girders OSG is formed on the upper flange 610 of both side lower flanges 610 and both side inner side portions of the outer side segment girders OSG 630) and the inner primary PS steel And a fixing portion 640 are respectively installed on the outer side segment girders OSG and OSG so as to be tensed by the outer primary PS steel wire 632 and the inner primary PS steel wire 642 of the outer side segment girders OSG, A connecting joint PS wire fixing portion 660 for connecting the outer side segment girders OSG to the upper portion of the lower flange 610 and the upper portion of the abdomen portion 620 are respectively installed on the upper flange 610 and the upper portion of the abdomen 620, Of the outer segment girder OSG and the span center segment girder SCG adjacent to the upper flange 600 and is connected to the abutment portion of the abutment portion 100 of the outer segment girder OSG, A continuous connection primary PS wire fixing portion 670 and a continuous connection secondary PS wire fixing portion 680 are provided at the ends of the outer side segment girder 620 at both ends thereof before and after the synthesis of the slab, A continuous connection primary PS wire 672 and a continuous connection secondary PS wire 682 are connected to the entire section of the abdomen 620 So that the continuous connection primary PS wire 672 is tightened before the slab combination and the continuous connection secondary PS steel wire 682 is tensioned after the slab combination so that the continuous connection is tightened successively and the outer segment girder OSG ) Continuous connection with strained continuous secondary PS liner fixture 680 and continuous PS secondary liner 682 are connected continuously to the outer segment seam girder (OSG) prior to the synthesis of the slabs. (670) and the continuous PS primary wire (672).

The spanwise center segment girder SCG is connected to the outer segment girder OSG at both side ends and is connected to both ends of the lower flange 510 on both sides of the spanwise center segment girder SCG and the spanwise center segment girder SCG An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 which bear the load of the spanwise center segment girder SCG are installed on the upper surfaces of the inner side lower flanges 510 of both sides, Is tensed by the lower flange of the outer primary PS steel wire 532 and the inner primary PS steel wire 542 of the girder SCG and is connected to the upper surface of the lower flange 510 of the connecting joint 570 of the span- A joint joining PS steel wire fusing unit 550 for joining the spanwise center segment girders SCG to each other is provided at the upper end of the abdomen 520. The span center segment girders SCG The upper flange 500 and the lower flange < RTI ID = 0.0 > (SCG) continuously connected to the abdomen portion 520 of the spanwise center segment girder SCG before and after the slab assembly are continuously connected to the outer segment girder OSG adjacent to the outer segment girder OSG The continuous tensioned primary PS strand 672 and the continuously connected secondary PS strand 682 are disposed and the continuous connected secondary PS strand 682 with continuous tensioning of the span center segment girder SCG after the slabs are combined ) Is located at the upper end of the continuous-connection primary PS steel wire 672, which is continuously connected and tensioned, before the composite of the slabs with the spanwise center segment girder (SCG).

The PSC U girder continuous bridge CB using the segment girder according to the present invention having the structure as described above has a cross sectional structure of the outer side segment girder OSG and the spanwise middle segment girder SCG and the continuous connection primary PS steel wire 672 ) And the sequential connection secondary PS 682 are sequentially connected and connected in series.

The outer primary PS steel wire fusing part 630 and the inner primary PS steel wire fusing part 640 on the upper surface of the lower flange 610 of the alternating focal point part 100, which is one side of the outer side segment girder OSG, The connecting joint PS wire fixing portion 660 on the upper surface of the lower flange 610 of the connecting joint portion 650 on the other side is used for the primary tension and the connecting joint of the outer side segment girder OSG The joint joining PS steel wire fixing part 550 on the upper surface of the lower joint flange 510 of the both side joint joining parts 570 of the spanwise center segment girder SCG has a structure in which the primary tension and the span- The upper flange 500, the lower flange 510 and the abdomen 520 of the connecting joint portion 570 of the spanwise center segment girder SCG are used for connecting joint tension of the SCG. And has a thicker structure than the other cross section.

The continuous connection of the outer segment segment girders OSG and the spanwise center segment segment girders SCG is also advantageous in that the continuous connection 1 tensioning prior to slab assembly located at the end of the upper abdomen 620 of the alternate flank 100 of the outer segment girders OSG, The outer side segment girder OSG and the spanwise center girder 640 in the continuously connected secondary PS steel wire fusing unit 680 which is tense after the slab combination located at the upper end of the primary PS steel wire fusing unit 670 and the continuous connected primary PS steel wire fusing unit 670, The continuous connection primary PS wire 672 and the continuous connection secondary PS wire 682 are tensed and connected continuously over the entire section of the abdomen portion 620 of the segment girder SCG.

A maintenance fusing block 700 is provided inside the alternate fuselage 100 of the outer side segment girder OSG and the fusing fixture 700 for the maintenance is provided with a steel fixture for insertion and maintenance A plurality of concave PS steel wire fusing parts 710 having a trumpet shape are provided in the outer side segment girders OSG inside the bridge piercing part 400. In this case, And a direction changing part through which the PS steel wire passes is provided and reinforced by an outer steel wire inside the outer side segment girder (OSG) during public use.

Hereinafter, the present invention will be described in more detail.

The PSC U girder continuous bridge (CB) using the segment girders according to the present invention can be applied to an alternating branch segment segment girder (APSG) and a pier portion segment segment girder to reduce the manufacturing, transportation, An outer segment segment girder OSG and a span center segment segment girder SCG which are formed by integrating the PPSG with a single segment girder.

In this case, although the self weight of the outer side segment girder (OSG) is increased, the number of outer segment girders (OSG) to be manufactured, installed, connected, and continuously connected can be reduced,

The outer side segment girder OSG is an outer side segment girder OSG which is formed by integrating an alternate flank segment girder APSG and a piercing flank segment girder PPSG with one segment girder. The length of the OSG is from the alternating fiducial point 100 to the intermaxillary intermaxillary moment interval and in the configuration of the outer segment girder OSG, the alternating fulcrum portion 100 of the outer side segment girder OSG, The height of the closed upper flange 605 engaged with the alternating fulcrum portion 100 is made lower than the other portions, (602), the cross-sectional thickness of the slab formed on the upper surface of the closed upper flange (605) is made thicker so as to attenuate the impact load of the vehicle entering the outer side segment girder (OSG) An outer primary PS steel wire fusing part 630 and an inner primary PS steel wire fusing part 630 which bear the loads of the outer side segment girders OSG on the both sides of the lower side flange 610 of the side OSG and the upper side of both side inner lower flanges 610, (Primary tension) with the outer primary PS steel wire 632 and the inner primary PS steel wire 642 after concrete pouring and curing.

The outer primary PS steel wire 632 and the inner primary PS steel wire 642 are joined to the spanwise center segment girder SCG adjacent to the outer segment girder OSG, The load of the outer side segment girder OSG is borne until the segment girders OSG are continuously connected by the continuous connection primary PS wire 672. [

A connection joint PS wire fixing unit 660 (see FIG. 6) is provided on the upper surface of the inner lower flange 610 of the connection joint 650 and the upper end of the abdomen 620 for connection between the outer side segment girder OSG and the spanwise center segment girder SCG. And the connecting joint PS wire 662 is tensioned (secondary tensioned) by the lower flange 610 and the upper flange 600 of the outer segment girder OSG to form the outer segment girder OSG and the span- Connect the girder (SCG) strongly.

The abdomen portions 620 and 520 and the upper flanges 600 and 500 and the lower flanges 610 and 510 of the connection joint portions 650 and 570 of the outer side segment girder OSG and the spanwise middle segment girder SCG have a cross- To increase the safety of the connection joints 650 and 570 and to increase the area of pressure applied to the primary PS steel wire fusing unit to improve the safety of the fusing unit.

The end portion belly portion 620 of the alternating fulcrum portion 100 of the outer side segment girder OSG is provided with a continuous connection primary PS steel wire fusing portion 670 are installed to tension the continuous connected primary PS steel wire 672 before the slabs are combined and the upper part of the continuously connected primary PS steel wire fixing part 670 is provided with a secondary The continuous connection secondary PS wire fixing part 680 is installed to bear the continuous connection and live load so that the continuous connection secondary PS wire 682 is tensioned (fourth tension) after the slab combination to complete the continuous connection tension.

The continuous connection primary PS wire 672 and the continuous connection secondary PS wire 682 are installed on the abdomen 620 over the entire section of the outer side segment girder OSG to be continuously connected and tightened, (OSG) functions to control both the moment and the moment.

Further, the continuous connected secondary PS steel wire 682 and the continuous connected secondary PS steel wire fender 680, which tense the outer segment girder OSG over the whole section after the slab is combined, form an outer segment girder OSG before slab combination, Is always positioned at the upper portion of the abdomen portion 620 than the continuously connected primary PS wire 672 and the continuously connected primary PS wire fixing portion 670 which are tense over the entire section.

This is because the self weight of the slab is greater than the live load by the vehicle, so that the eccentric efficiency of the continuous connection primary PS steel wire 672, which imposes a load on the slab, is increased to easily load the slab.

The outer primary PS steel wire fusing part 530 and the inner primary PS steel wire fusing part 540 formed on the upper surfaces of the inner side lower flanges 610 of the outer side segment girders OSG are used as a primary PS steel wire fusing part And the joint joining PS steel wire fixing portion 660 in the joining joining portion 650 connected to the spanwise center segment girder SCG is used in combination with the primary PS steel wire fixing and the joint joining PS steel wire fixing.

The PS grid wire fusing unit 720 for maintaining the outer steel wire reinforcement inside the common mid-outer segment girder OSG is formed at the upper end of the abdomen portion 620 of the alternate focal point portion 100 of the outer side segment girder OSG, And it is utilized for maintenance and reinforcement.

This is because a PS steel wire fixing part 720 having a trumpet-shaped concave hole is formed by a die so that a steel material fixing hole can be inserted and inserted later if necessary without pre-embedding a steel material fixing hole in advance, The PS grid fixing unit 732 may be formed on the upper portion of the partition wall 730 above the pier corner portion 400 or the direction switching unit through which the PS grid line passes may be formed in the same manner as described above, (OSG), the maintenance is carried out by external reinforcement method.

In addition, a piercing point PS wire fixing part 740 for bearing the control of the momentum may be installed on the inner surface or the outer surface of the upper part of the abdomen 620 of the piercing point part 400 of the outer side segment girder OSG, And the tensile resistance of the mandrel portion is increased by tension (fifth tension) with the PS steel wire 742 at the pier portion.

The spanwise center segment girder SCG is a portion of the inner side span between the inner side spans and the spanwise middle portion of the segment girders SCG extends up to the midpoint between the inner side spans. The end portions of the lower flange 510 on both sides of the spanwise center segment girder SCG and the end portions of the both side inner lower flanges 510 (510) are welded to the outer side segment girders (OSG) An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 which bear the load of the spanwise center part segment girder SCG are respectively installed on the upper side of the spanwise center part segment girder SCG, The primary primary PS strand 532 and the primary primary PS strand 542 are tensioned (primary tension) by primary PS strand 532 and inner primary strand 542, (OSG) and the adjacent outer segment girders The load of the span center segment segment girder SCG until the entire section of the continuously connected span center segment segment girders SCG is continuously connected by the continuously connected primary PS steel wire 672 And the span center segment girder SCG has a joint joining PS steel wire fusing unit 550 on the upper surface of the both side inner lower flange 510 and the upper portion of the abdomen 520 for joint connection with the outer side segment girder OSG (Second tension) the connecting joint PS wire 662 with the lower flange 510 and the upper flange 500 of the span center segment segment girder SCG to strengthen each span center segment girder SCG Connection joint.

The joint joining PS steel wire fusing unit 550 on both sides of the inner side lower flange 510 of the spanwise center segment girder SCG is used for primary PS steel wire fixing and maintenance, The upper flange 500, the lower flange 510 and the abdomen 520 of the spanwise portion segment girders 570 form thicker sections than the other sections to increase the performance of the connecting joints 570 of the spanwise center segment girders SCG.

The continuous span primary PS strand 672 and the continuous secondary stranded PS strand 682 coming from the outer segment girder OSG are arranged in the abdomen portion 520 of the span center segment segment girder SCG, The entire section of the segment girder SCG is continuously connected and tightly connected to the abdomen 520, where it functions to control the longitudinal moment.

The PSC U girder continuous bridge CB using the segment girder having the above structure has a structure in which the cross sectional structure of the outer segment girder OSG and the spanwise center segment girder SCG is connected to the continuous connection primary PS steel wire 672 continuously And the secondary PS wire 682 are sequentially connected and connected in series.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

As shown in FIGS. 67 to 80, in the PSC U girder bridge construction method using the segment girder according to the present invention, the outer side segment girder OSG and the spanwise middle segment girder SCG are manufactured in the manufacturing site, (Primary tension) between the outer side segment girders OSG and the spanwise center segment girders SCG by the outer primary PS steel wires 632 and 532 and the inner primary PS steel wires 642 and 542, The load of the center segment segment girder SCG is loaded and the outer segment segment girders OSG and the spanwise center segment segment girders SCG are mounted on the alternating A and pier P and the hypothetical vent B, The PSG wire 662 is connected to the segment girder OSG and the spanwise center segment girder SCG by a tension (second tension) 670, the outer segment girder OSG and the span center segment < RTI ID = 0.0 > (Tertiary tension) with the continuous connection primary PS strand 672 over the entire section of the strands 620 and 520 of the upper portion SCG and between the outer segment SG and the span of the span center segment SGG The slab is formed by pouring and curing the concrete on the upper portion of the outer side segment girder OSG and the outer side segment girder OSG and the span portion of the spanwise middle segment girder SCG in the continuous connected secondary PS steel wire fusing portion 680 of the outer side segment girder OSG The PS grid wire fusing unit 740 of the pier end portion of the outer side segment girder OSG 740 is connected to the intersection point of the PS grid wire fixing unit 740 of the outer side segment girder OSG, The secondary PS steel wire 742 is tensioned (fifth tension), and the continuous connection is carried out.

[Continuous bridge 4]

Fig. 81 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention; Figs. 4 and 82 are enlarged views of an alternate flank segment girder (APSG) 82 is a sectional view taken along the line BB of Fig. 82, Fig. 85 is a sectional view taken along line CC of Fig. 82, Fig. 86 is a sectional view taken along line DD of Fig. 82, Fig. 87 is a sectional view taken along line EE of Fig. 82, 90 is a cross-sectional view taken along the line AA of Fig. 89, Fig. 91 is a sectional view taken along the line BB of Fig. 89, and Fig. 92 is a cross- FIG. 93 is a cross-sectional view taken along the line DD of FIG. 89, and FIG. 94 is a cross-sectional view taken along the line EE of FIG.

As shown in these figures, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of an upper flange 600, a lower flange 610 and a belly portion 620, A segment girder (OSG); A span of the spanwise center segment having a constant length and formed by the upper flange 500, the lower flange 510 and the belly 520, connected to the outer segment girder OSG by continuous PS primary wires 672 and 682, Wherein the upper portion flange 600 of the outer side segment girder OSG is formed with a closed upper flange 605 whose upper surface of a predetermined section is closed in the longitudinal direction, A thick plate lower flange 612 is formed at both sides of the lower flange 610 of the segment girder OSG and protrudes outwardly along the longitudinal direction for a predetermined length and has a thicker plate bottom flange 612, An outer primary PS steel wire 632 is provided across the outer primary PS steel wire fusing unit 630 and a plurality of primary PS steel wire 632 is installed across the outer primary steel wire fixing unit 630, Inside the inwardly spaced part, An inner primary PS steel wire 642 is provided across the inner primary PS steel wire fixing portion 640 and the abdomen portion 620 of the outer side segment girder OSG is installed, A continuous connection primary PS wire fixing portion 670 is provided at one side of the continuous connection primary PS wire fixing portion 670 and a continuous connection primary PS wire 672 is provided to the continuous connection primary PS wire fixing portion 670, A continuous connection secondary PS wire fixing portion 680 is provided on an upper portion of the connection primary PS wire fixing portion 670 and a continuous connection secondary PS wire 682 is connected to the continuous connection secondary PS wire fixing portion 680, And a connecting joint PS wire wire fusing unit 660 is installed on an upper portion of the inner stern portion 620 which is spaced apart from the inside of the outer side segment girder OSG by a predetermined distance and connected to the connecting joint PS wire wire fusing unit 660 A jointed PS steel wire 662 is provided on both sides of the lower flange 510 of the spanwise center segment girder SCG, The lower plate lower flange 512 is provided with an outer primary PS steel wire fusing unit 530 and an outer primary steel wire fixing unit 530 is provided across the outer primary steel wire fixing unit 530, An inner primary PS wire fixing portion 540 is provided at a portion spaced inwardly from the rear plate lower flange 512 and an inner primary PS wire fixing portion 540 is provided between the inner primary PS wire fixing portion 540 and the inner primary PS wire fixing portion 540. [ An inner primary PS steel wire 542 is installed across the span of the girder of the span and a connecting joint PS wire wire fusing unit 550 is installed at the upper end of the span of the span 520,

In addition, the outer side segment girder OSG and the spanwise middle segment girder SCG are connected and joined together by the sequential tensions of the PS steel wires 672 and 682.

The outer primary PS wire fixing portion 630 and the inner primary PS wire fixing portion 640 of the outer side segment girder OSG are used for primary tension and the connection joints of the outer side segment girders OSG, The PS primary wire fixing portion 560 and the inner primary PS wire fixing portion 540 of the spanwise center segment girder SCG are used for primary tension And the connecting joint PS steel wire fusing portion 550 of the spanwise center segment girder SCG is used for connection joint tension.

The continuous connection of the outer side segment girder OSG and the spanwise center segment girder SCG is performed by connecting the continuous connection primary PS wire fixing portion 670 of the outer side segment girder OSG to the continuous connection secondary PS wire fixing portion 680 The continuous connected primary PS strand 672 and the continuous connected secondary stranded strand 682 are tensioned continuously over the entire length of the abdomen portions 620 and 520 of the outer segment girder OSG and the spanwise middle segment girder SCG, Connect.

A maintenance fixing block 700 is provided in the abdomen portion 620 of the outer side segment girder OSG and a truss-shaped concave PS wire fixing portion 710 is installed in the maintenance fixing block 700 And a trumpet-shaped concave PS wire fixing portion 720 is installed on the upper portion of the abdomen portion 620 of the outer side segment girder OSG, or a direction changing portion is provided.

That is, the PSC U girder continuous bridge CB using the segment girder according to the present invention is composed of an outer side segment girder OSG and a spanwise middle segment girder SCG, and the outer side segment girder OSG includes an alternate- (OSG) of the outer side segment girder (OSG) and the bridge piercing branch portion (400) are integrated into a single piercing segment segment girder (APSG) The upper flange 600 forms the closing upper flange 605 with the step 602 and the slab formed on the upper surface of the closing upper flange 605 of the alternate focal point portion 100 is formed thicker The outer primary PS wire fixing portion 630 and the outer primary segment wire girder 630 bear the loads of the outer segment girders OSG at the ends of the lower flanges 610 and the upper flanges 610 of both side inner side portions of the outer side segment girders OSG, The inner primary PS wire fixing unit 640, And is tensed by the outer primary PS steel wire 632 and the inner primary PS steel wire 642 of the outer side segment girder OSG and the upper surface of the lower flange 610 of the connecting joint 650 of the outer side segment girder OSG And a joint joining PS wire fixing portion 660 for joining the outer segment girders OSG to the upper portion of the abdomen portion 620. The outer side segment girders OSG at the upper end of the lower flange 610 and the abdomen portion 620, And the span center segment segment girder SCG adjacent to the upper flange 600 is tied to the lower flange 610 and the upper flange 600. The end portion of the alternate flank portion 100 of the outer segment segment girder OSG A continuous connection primary PS wire fixing portion 670 and a continuous connection secondary PS wire fixing portion 680 are provided for continuously connecting and tightening the outer segment girders OSG after the front portion and the rear portion of the abdomen portion 620, A connecting primary PS steel wire 672 and a continuously connected secondary PS steel wire 682 are installed, The continuous connection primary PS steel wire 672 is tightened before the connection and the continuous connection secondary PS steel wire 682 is tensioned after the slab connection so that the connection of the outer side segment girder (OSG) The continuously connected secondary PS wire fixing unit 680 and the continuously connected secondary PS steel wire 682 are connected to each other by a continuous connection primary PS wire fixing unit 670 which continuously ties the outer segment girders OSG before the slabs are combined ) And the first-order PS wire 672 of continuous connection.

The span center segment segment girder SCG has a structure in which the outer segment segment girders OSG are connected and bonded at both side ends of the span center segment segment girders SCG. An outer primary PS steel wire fusing part 530 and an inner primary PS steel wire fusing part 540 that bear the load of the spanwise center segment girder OSG are respectively installed on the upper surface of the inner side lower flange 510 of each side face, And is tensed by the outer primary PS strand 532 and the inner primary PS strand 542 of the girder SCG and the upper surface of the lower flange 510 of the connecting joint 570 of the spanwise center segment girder SCG and the upper portion of the abdomen 520 A connecting joint PS steel wire fixing portion 550 for connecting and connecting the span center segment segment girder SCG is installed at the upper end of the span center portion segment girder SCG at the upper end of the lower flange 510, (500) and the lower flange (510) (SCG), which is continuously connected to the abdomen portion 520 of the span center segment girder (SCG) before and after the slab combination, is continuously connected to the outer segment girder (OSG) Connected primary PS steel wire 682 and a continuously connected secondary PS steel wire 682 are arranged and a continuous connected secondary PS steel wire 682 in which the spanwise center segment girder SCG is continuously connected and tensioned after the slabs are combined, The structure is such that the span center segment girder (SCG) is located at the upper end of the continuous connection primary PS steel wire 672 which is continuously connected and tense before the composite.

The PSC U girder continuous bridge CB using the segment girder according to the present invention having the structure as described above has a cross sectional structure of the outer side segment girder OSG and the spanwise middle segment girder SCG and the continuous connection primary PS steel wire 672 ) And the continuous PS secondary wire (682) are sequentially connected and connected in series.

The upper end of the alternating fulcrum portion 100 of the outer side segment girder OSG is composed of the lower flange 610 and the upper flange 600 spaced inwardly by a predetermined distance, And a cross-section is formed thicker than the medial portion.

The outer primary PS steel wire fusing part 630 and the inner primary PS steel wire fusing part 640 on the upper surface of the lower flange 610 of the alternate focal point part 100, which is one side of the outer side segment girder OSG, The joint joining PS steel wire fusing part 660 on the upper surface of the lower flange 610 of the connecting joint part 650 on the other side has a first tension and an outer side segment girder OSG The joint joining PS steel wire fusing unit 550 on the upper surface of the lower flange 510 of the both side joining joints 570 of the spanwise center segment girder SCG has a first tension And the upper flanges 600 and 500 of the connection joint portions 650 and 570 of the outer side segment girder OSG and the spanwise middle segment girder SCG are used for joint tensioning of the span center segment segment girder SCG. ), The lower flanges 610, 510 and the abdomen 620, 520 have cross-sections other than the above- Thicker than the structure.

The continuous connection of the outer segment segment girders OSG and the spanwise center segment segment girders SCG is also advantageous in that the continuous connection of the longitudinal segment girders OSG, The outer side segment girder OSG and the span gap PS in the continuously connected secondary PS steel wire fusing unit 680 that is tense after the slab combination located at the upper end of the primary PS steel wire fusing unit 670 and the continuous connected primary PS steel wire fusing unit 670, The continuous connection primary PS wire 672 and the continuous connection secondary PS wire 682 are tensed and connected continuously over the entire section of the abdomen 620, 520 of the center segment segment girder SCG.

The maintenance fusing block 700 is provided in the interior of the alternate fuselage 100 of the outer side segment girder OSG and the fusing fixture block 700 is provided with a steel fixture for insertion and maintenance A plurality of concave PS steel wire fusing parts 710 having a trumpet shape are installed in the outer side segment girders OSG and a plurality of concave PS steel wire fusing parts 720 (PSG) through the outer segment steel girder (OSG).

Hereinafter, the present invention will be described in more detail.

The PSC U girder continuous bridge (CB) using the segment girders according to the present invention can be applied to an alternate-point segment segment girder (APSG) and a pierce segment segment girder (PPSG) to reduce the manufacturing process of the segment girders, Can be constituted by an outer segment segment girder (OSG) and a span center segment segment girder (SCG) which are integrated with a single segment girder.

In this case, although the weight of the outer side segment girder (OSG) is increased, the number of outer segment girders (OSG) to be manufactured, installed, connected, and continuously connected can be reduced,

The outer side segment girder OSG is an outer side segment girder OSG in which an alternate flank segment girder APSG and a pierce flank segment girder PSSG are integrated into one and the length of the outer side segment girder OSG is In the configuration of the outer side segment girder OSG, the alternating fulcrum portion 100 of the outer side segment girder OSG and the upper flange portion 100 of the piercing fulcrum portion 400 extend from the alternate fulcrum portion 100 to the inter- The upper end of the closed upper flange 605 of the alternate fulcrum portion 100 is formed to have a height lower than that of the other portions, 602 of the outer side segment girder OSG and the cross sectional thickness of the slab formed on the upper side of the closing upper flange 605 is made thicker so as to attenuate the impact load of the vehicle entering the outer side segment girder OSG,An outer primary PS steel wire fusing portion 630 and an inner primary PS steel wire fusing portion 640 which bear the loads of the outer segment girders OSG are attached to the ends of the both side lower flanges 610 and the upper surfaces of both side inner lower flanges 610, (First tension) with the outer primary PS steel wire 632 and the inner primary PS steel wire 642 after the concrete is laid and cured to form a slab.

The outer primary PS steel wire 632 and the inner primary PS steel wire 642 are joined to the spanwise center segment girder SCG adjacent to the outer segment girder OSG, The load of the outer side segment girder OSG is borne until the segment girders OSG are continuously connected by the continuous connection primary PS wire 672. [

Connected to the upper surface of the inner lower flange 610 of the connecting joint portion 650 of the outer side segment girder OSG and to the upper end of the abdomen portion 620 for joining the outer side segment girders OSG and the spanwise middle segment girders SCG, The joint PS PS steel wire fixing portion 660 is installed and the joint joining PS steel wire 662 is tensed (second tension) to strongly connect and connect the outer side segment girders OSG and the spanwise middle segment girders SCG.

The abdomen portions 620 and 520 and the upper flanges 600 and 500 and the lower flanges 610 and 510 of the connection joint portions 650 and 570 of the outer side segment girder OSG and the spanwise center segment girder SCG are formed to have a single- The safety of the joint is improved and the area of the pressure of the primary PS steel wire fixing part is increased to secure the safety of the fixing part.

The end portion abdomen portion 620 of the alternating fulcrum portion 100 of the outer side segment girders OSG is connected to a continuous connection primary PS liner fusing portion 670 which bear the primary continuous connection of the outer side segment girders OSG and the load of the slab (Third tension) of the continuous connection primary PS steel wire 672 before the slab assembly, and a second continuous connection of the outer segment girder OSG is provided on the continuous connection primary PS steel wire fixing part 670, The continuous connection secondary PS wire fixing portion 680 is installed to bear the connection and live load, and the continuous connection secondary PS wire 682 is tensioned (fourth tension) after the slab combination to complete the continuous connection tension.

The continuously connected primary PS strand 672 and the continuously connected secondary PS strand 682 are installed in the abdomen 620 over the entire section of the outer segment girder OSG to be continuously connected and tensioned, And the parent command simultaneously.

The continuous connection secondary PS steel wire 682 and the continuous connection secondary PS steel wire fender 680 that tense the outer segment girder OSG over the entire section after the slab combination are welded to the outer segment girder OSG before slab assembly, And the spanwise center segment girder SCG are always positioned above the continuously connected primary PS strand 672 and the continuously connected primary PS strand fusing unit 670 which are tense over the entire section at the abdomen 620. [

This is because the weight of the slab is greater than the live load by the vehicle, so that the eccentric efficiency of the continuous-connected primary PS steel wire 672, which imposes a load on the slab, is increased to easily load the slab.

The outer primary PS steel wire fusing unit 530 and the inner primary PS steel wire fusing unit 540 installed on the upper surfaces of the inner side lower flanges 610 of the outer side segment girders OSG are used as a primary PS steel wire fusing unit And the joint joining PS steel wire fusing part 660 of the joining joining part 650 connected to the spanwise center segment girder SCG is also used as a primary PS steel wire fusing part and a joining joining PS steel wire fusing part.

A PS steel wire fusing unit 720 for maintenance is provided at the upper end of the abdomen portion 620 of the alternate focal point portion 100 of the outer side segment girder OSG to reinforce the outer steel wire inside the common middle outer segment girder OSG. And it is utilized for maintenance and reinforcement.

This is because the maintenance fixing block 700 having the trumpet-shaped concave hole is formed by the die so that the steel fixing hole can be inserted and inserted later if necessary without pre-embedding the steel fixing hole, The PS wire fixing portion 732 may be formed on the upper portion of the partition wall 730 at the upper portion of the bridge pier portion 400 or the direction switching portion through which the PS wire may pass may be formed in the upper portion of the outer side segment girder OSG And maintenance is carried out by external reinforcement method.

When the upper flange 600 and the abdomen 620 are formed only by the lower flange 610 spaced inwardly from the alternate fringe part 100 of the outer side segment girder OSG, It is possible to minimize the interference of obstacles such as the parallax of alternation (A) at the back surface of the continuous connection secondary PS steel wire (672) and the continuous connection secondary PS steel wire (682).

In this case, the lower flange 610 on the upper portion of the alternate focal point 100 forms a section that is thicker than the inner portion.

A piercing point PS steel wire fusing unit 740 is installed on an inner surface or an outer surface of an upper end of the abdomen 620 of the bridge portion 400 of the outer side segment girder OSG to load the slab, (Fifth-order strain) by the piercing-point-side PS wire 742, thereby increasing the tensile resistance of the mandrel portion.

The spanwise center segment girder SCG is a portion of the longitudinal moment segment segment girder SCG between inner diameters and the length of the spanwise middle segment segment girder SCG is up to a moment segment interval between the inner diameters, The end portions of the lower flange 510 on both sides of the spanwise center segment girder SCG and the end portions of the both side inner lower flanges 510 (510) are welded to the outer side segment girders (OSG) An outer primary PS steel wire fusing portion 630 and an inner primary PS steel wire fusing portion 640 which bear the load of the spanwise center segment girder SCG are respectively installed on the upper side of the spanwise center portion segment girder SCG, The primary PS strand 632 and the inner primary PS strand 642 are strained by the primary PS strand 632 and the inner primary PS strand 642, (OSG) adjacent to the adjacent lateral segment girder The load of the span center segment segment girder (SCG) is burdened until the entire section of the sequentially joined span center segment segment girders (SCG) is continuously connected by the continuous primary PS steel wire (672) And the span center segment girder SCG is provided with a joint joining PS steel wire fusing unit 550 on the upper surface of both side inner lower flanges 510 and the upper portion of the abdomen 520 for joint connection with the outer side segment girders OSG (Second tension) the spliced PS strand 662 with the lower flange 510 and the upper flange 500 of the span center segment girder SCG to form the span center segment segment girder SCG and the outer segment segment girder OSG, Are strongly connected to each other.

The joint joining PS steel wire fusing unit 550 on both sides of the inner side lower flange 510 of the spanwise center segment girder SCG is used for fixing the primary PS steel wire, The upper flange 500, the lower flange 510 and the abdomen 520 are configured to have a thicker section than the other sections to increase the performance of the connecting joint 570 of the spanwise center segment girder SCG.

The continuous span primary PS strand 672 and the continuous secondary stranded PS strand 682 coming from the outer segment girder OSG are arranged in the abdomen portion 520 of the span center segment segment girder SCG, The entire section of the segment girder SCG is continuously connected and tightly connected to the abdomen 520, where it functions to control the longitudinal moment.

The PSC U girder continuous bridge CB using the segment girder according to the present invention having the structure as described above has a cross sectional structure of the outer side segment girder OSG and the spanwise middle segment girder SCG and the continuous connection primary PS steel wire 672 ) And a continuous PS secondary strand 682. The continuous PSC U girder segment girder bridges are organically connected and continuously connected by the sequential tension of the secondary PS strand 682 and the continuous PS secondary strand 682.

Hereinafter, the PSC U girder bridge construction using the segment girder according to the present invention will be described.

81 to 94, in the PSC U girder bridge construction method using the segment girder according to the present invention, the outer side segment girder OSG and the spanwise middle segment girder SCG are manufactured in the manufacturing site, and the outer side segment girder (Primary tension) between the outer side segment girders OSG and the spanwise center segment girders SCG by the outer primary PS steel wires 632 and 532 and the inner primary PS steel wires 642 and 542, The load of the center segment segment girder SCG is loaded and the outer segment segment girders OSG and the spanwise center segment segment girders SCG are mounted on the alternating A and pier P and the hypothetical vent B, The PSG wire 662 is connected to the segment girder OSG and the spanwise center segment girder SCG by a tension (second tension) 670, the outer segment girder OSG and the span center segment < RTI ID = 0.0 > (Tertiary tension) with the continuously connected primary PS steel wire 672 over the entire section of the abdomen 620 and 520 of the upper portion SCG and the upper portion of the upper portion segment girder OSG and the upper portion of the span center girder SCG And the slab is formed by pouring and curing the concrete to form a slab and the outer portion segment girder OSG and the spanwise middle portion segment girder SCG in the continuously connected secondary PS steel wire fusing portion 680 of the outer side segment girder OSG, The PS grid wire fixing unit 740 of the outer side segment girder OSG is connected to the intersection point side of the pivot point fixing unit 740. The PS grid wire fixing unit 740 of the outer side segment girder OSG, The PS steel wire 742 is tensioned (fifth tension), and the continuous connection is carried out.

Hereinafter, the arrangement of the PSC U girder bridges using the segment girders according to the present invention will be described.

Fig. 95 is a longitudinal sectional view showing a PSC U girder continuous bridge using a segment girder according to the present invention, Fig. 96 is an enlarged view showing an alternate flank segment girder of Fig. 95, 95 is an enlarged detail view of a segment girder of the span of FIG. 95, FIG. 99 is a detail view of an enlarged view of a bridgehead segment girder of FIG. 95, and FIG. 99 is a sectional view taken along the line AA in Fig. 99, Fig. 101 is a sectional view taken along line BB in Fig. 99, Fig. 102 is a sectional view taken along the line CC in Fig. 99, Fig.

As shown in these drawings, the PSC U girder continuous bridge (CB) using the segment girder according to the present invention comprises an alternating fulcrum segment girder (APSG), a piercing fulcrum segment girder (PPSG) .

A joint joining PS steel wire fixing unit 350 joining the segment girders to the upper end of the abdomen portion 520 of the spanwise center segment girder SCG and joining the girders before the slab joining and resisting the slab load generated at the pierce point portion 400, The joint joining PS steel wire 352 is continuously connected and tensioned to the upper part of the alternating fulcrum segment girder APSG, the piercing fulcrum segment girder PPSG and the span center girder segment girder SCG, A continuous connection primary PS wire fixing unit 360 for continuously connecting and tightening the segment girders before the slab is formed at the upper portion of the girder portion 430 at a portion spaced from the bridge piercing portion 400 of the secondary segment girder PPSG at left and right sides, The continuous connected primary PS steel wire 362 is tensioned by span over the bridge piercing portion 400 in continuous connection with the alternate flank segment girder APSG and continuously connected to the spanwise center segment girder SCG Both sides The primary continuous PS strand 362 is tensioned by span past the piercing point part 400 and the continuous PS primary strand 362 is tensioned by the span of the alternating fulcrum segment girder APSG and the pierced point segment girder PPSG, (362) is constituted so as to be tensioned from the center of the girder to the bottom of the girder by the PS steel wire which shares the slab load.

As described above, the PSC U girder bridge using the segment girder according to the present invention is divided into the positive and the subsidiary segment segment girders according to the behavior characteristics, and the alternate segment segment girders and the middle segment segment girders In the continuous bridge, the segment girder, the bridge pier segment segment and the span center segment segment girder are constructed alternately, or the segment girder is composed of the outer segment segment girder and the spanwise center segment segment girder, After each segment girder is manufactured, it is mounted on alternation, pier and temporary vent by a crane, and it is not necessary to use large scale equipment by connecting and connecting continuously with small equipment and manpower. It is same with construction process of general PSC U girder The longest span girder can be constructed economically.

In addition, the PSC U girder bridges using the segment girders according to the present invention can further enhance the safety and efficiency of the PSC U girder by strengthening the joining of the segment girders and sequentially performing continuous connection tensions according to the construction process. Economically, PSC U girder bridges can be constructed.

100: alternate fulcrum portion 110: upper flange
112: Step 114: Closing upper flange
120: Lower flange 122: Plate lower flange
130: abdomen 140: outer primary PS steel wire fixing part
142: outer primary PS steel wire 150: inner primary PS steel wire fixing part
152: Inner primary PS wire 160: Connection joint PS wire fixing part
162: connection joint PS wire 170: continuous connection primary PS wire fixing part
172: continuous connection primary PS wire 180: continuous connection secondary PS wire fixing part
182: continuous connection secondary PS liner 190: fixing block for maintenance
192: PS wire fixing unit for maintenance 194: connection joint
200: upper flange 210: lower flange
212: Plate lower flange 220: Abdomen
230: outer primary PS wire fixing part 232: outer primary PS wire
240: Inner primary PS strand fixing portion 242: Inner primary PS strand
244: connection joint part 250: connection joint PS wire fixing part
300: upper flange 302:
305: Closing upper flange 310: Lower flange
312: Plate lower flange 320: Abdomen
330: outer primary PS wire fixing portion 332: outer primary PS wire
340: Inner primary PS strand fixing part 342: Inner primary PS strand
350: connection joint PS wire fixing portion 352: connection joint PS wire
360: continuous connection primary PS wire fixing part 362: continuous connection primary PS wire
370: continuous connection secondary PS wire fixing part 372: continuous connection secondary PS wire
380: connecting joint 390: fixing block for maintenance
392: PS wire fixing part for maintenance management 394: PS wire fixing part
400: bridge post portion 410: upper flange
412: Closing upper flange 420: Lower flange
422: Plate lower flange 430: Abdomen
440: outer primary PS wire fixing portion 442: outer primary PS wire
450: Inner primary PS strand fixing part 452: Inner primary PS strand
460: connection joint PS wire fixing portion 462: connection joint PS wire
470: partition wall 472: PS wire fixing part for maintenance
480: Pier part of the bridge pier PS fixing part 482: Pier part PS liner
490: PS wire fixing part 492: connection joint
500: Upper flange 505: Closing upper flange
510: bottom flange 512: bottom plate bottom flange
520: abdomen 530: outer primary PS steel wire fixing part
532: outer primary PS steel wire 540: inner primary PS steel wire fixing part
542: Inner primary PS steel wire 550: Connection joint PS steel wire fixing part
552: joint joining PS steel wire 560: PS steel wire fixing part
570: connection joint 600: upper flange
602: Step 605: Closing upper flange
610: Lower flange 612: Plate lower flange
620: abdomen 630: outer primary PS steel wire fixing part
632: outer primary PS steel wire 640: inner primary PS steel wire fixing part
642: Inner primary PS steel wire 650: Connection joint
660: Connection joint PS wire fixing part 662: Connection joint PS wire
670: continuous connection primary PS wire fixing part 672: continuous connection primary PS wire
680: continuous connection secondary PS wire fixing part 682: continuous connection secondary PS wire
700: Fixing block for maintenance 710: PS wire fixing part for maintenance
720: PS wire fixing part 730: partition wall
732: PS steel wire fixing part for maintenance 740: PS steel wire fixing part
742: Pier part PS lane A: Shift
APSG: Alternating section segment girder ASG: Alternating section segment girder
B: Hypothetical Bent CB: Continuous Bridge
CSG: Center segment girder OSG: Lateral segment girder
P: Piers PPSG: Piers segmented segment girders
SB: Simple bridge SCG: Span center segment girder

Claims (17)

PSC U girder connecting a PSC U girder segment and constituting a bridge girder, wherein the simple bridge PSC U girder comprises an alternating segment girder and a middle segment girder, the alternating segment girder comprising: Wherein one side end portion constitutes an alternate fulcrum portion and the other side end portion is connected to the center segment girder and the upper flange of the predetermined section has a stepped structure at the alternate fulcrum portion of the alternate portion segment girder, The slabs placed on the top surface of the upper flange are formed to be thicker in section than the other sections, and the primary flange end portions of both side surfaces of the alternating segment girders are formed with a primary PS steel wire fusing portion bearing the load of the girder, , The upper flange upper surface of the connecting joint portion of the alternate segment girders and the upper end portion of the abdomen, And a connecting joint PS strand fixing section for connecting and joining the lower girder, the lower girder, the lower girder, the lower girder, and the lower girder, And the continuous PS secondary wire fixing unit is composed of a continuous connection PS secondary wire fixing unit and a PS steel wire is formed between the abdomen fixing unit and a continuous connection primary tension is made before the slab is combined, Continuous connection by sequential tensioning Sequential sequential connection by tension Strain continuity of segment girders after slab consolidation Continuous connection by tension Secondary PS liner Fixing part and PS liner are continuous connection of segment girders before slab combination Continuous connection And is positioned at an upper position of the primary PS steel wire fixing portion and the PS steel wire, And a primary PS steel wire fuselage portion bearing a girder load is formed on each of the lower flange end portions on both side surfaces of the central portion segment girder and the upper side inner side lower flanges on both sides of the girder, And a joint joining PS steel wire fixing part for joining the segment girders to the upper surface of the lower flange and the upper part of the abdomen of the connecting joints on both side surfaces of the center segment girder is composed of a lower flange and an adjacent alternating portion Segment girder and connecting joint The PSC with segmented girder is characterized by the tensioned structure, the alternating segment girder and the middle segment girder are organically jointed and continuous tensioned by the respective sectional structure and the sequential tension of the PS steel wire. U girder bridge. The method according to claim 1,
The continuous connection of each of the continuously connected segment girders is made by a continuously connected primary PS steel wire fusing unit which is tense before the slab combination located at the upper end abdomen end of the alternate portion of the alternating segment girders and after tensioning after the slab combination located at the upper end of the fusing unit PSC U with a segment girder characterized by continuous tensioning of continuous PS primary and continuous PS secondary strands across the entire length of the abutment of the alternating section and middle segment girders in the continuous PS secondary strand fixture Girder bridge. The method according to claim 1,
A concrete concrete fixing block for maintenance is formed in the alternate point portion of the alternating segment girders, and a truss-shaped concave PS steel wire fixing portion is formed in the concrete fixing block for maintenance so that the steel fixing portion can be inserted and maintained during maintenance. A PSC U girder bridge using segment girders characterized in that a plurality of girders are installed and reinforced by an outer girder inside the girder. In a continuous bridge PSC U girder constituting a bridge girder by continuously connecting PSC U girder segments,
The continuous bridge PSC U girder is composed of an alternating fulcrum segment girder, a piercing fulcrum segment girder, and a spanwise center segment girder, wherein the alternate fulcrum segment girder comprises alternating fulcrum segment girders with alternating fulcrums, And the other side end portion is connected to the bridge pier portion segment girder. In the alternate fulcrum portion of the alternate fulcrum portion segment girder, the upper flange of the predetermined section has a closed structure with a step, The slabs are formed to be thicker in cross section than the other sections. On the lower flange end portions of both side lower flanges of the alternate flank segment girders and the upper flange upper side of both side inner side portions, a primary PS steel wire fusing portion bearing a load of the girder is formed, And the lower flange upper surface of the connecting joint of the alternate flank segment girder And a connecting joint PS wire fixing part for connecting and joining the segment girders to the upper part of the girder lower part of the upper girder and the lower girder lower part at the upper part of the lower part of the girder lower part, At the end of the abutment part of the alternation point, the continuous connection primary PS wire fixing part and the continuous connection secondary PS wire fixing part are connected to each other before and after the synthesis of the slab, and the PS wire is formed in the entire abdomen part. After the slab is combined, the continuous connection is first tensioned, and after the slab combination, the continuous connection is subjected to the secondary tension and the continuous connection tension is applied. After the slab is combined, the segment girder is continuously connected and tensioned. The steel wire is connected continuously to the segment girders before tensioning the slab. Wherein one end of the bridge pier segment segment girder is connected to the alternating fulcrum segment girder and the other side end portion is connected to the spanwise center segment girder respectively or the both side ends of the girder Wherein a first PS steel wire fusing part which imposes a load on the girder is formed on the lower flange ends of both side faces of the piercing fulcrum segment girders so as to be tied to the girder lower edge, A segmented girder is formed on the upper surface of the lower flange and the upper portion of the abdomen of the connecting joints on both sides of the pier portion segment segment girder by tensioning with a girder upper edge portion formed on the inner or outer surface of the upper portion of the girdle, The joint joining PS steel wire fusing parts for joint joining are respectively constituted The lower flange and the lower flange of the bridge girder at the upper part of the girder and the lower flange of the bridge girder at the lower part of the girder are tensioned and connected to the segment girder or the middle girder of the span center. Sectional shape of the lower flange is made thicker than that of the first flange and the upper flange is formed of a closed section having a certain section about the point, Continuous connection to make continuous connection tension Continuous connection primary PS liner and continuous connection Secondary PS liner, continuous connection to connect the segment girder after the synthesis of the slab Continuous connection Second PS liner to connect the segment girder, And the upper end of the spindle center portion And the girder girder is connected to the pierced section segment girder at both side end portions of the span center segment girder, and a girder load is applied to the lower flange end portions on both side surfaces of the span- And PS joint members for jointing the segment girders to the top and bottom of the lower flange of the connecting joints on both sides of the spanwise center segment girder, Wherein the girder of the girder upper end and the lower girder are connected to the girder of the bridge pier adjacent to the lower girder, and a continuous connection primary PS Steel wire and continuous connection Secondary PS wire And a continuous connection secondary PS strand constituted by tensioning the segment girders after the slab is continuously connected is composed of a structure in which the segment girders are positioned at the upper end of the continuous connection primary PS strand which continuously tension the segment girders before the slab is combined, Characterized in that the alternating fulcrum segment girders, the pierce fulcrums segment girders and the spanwise center segment girders are organically connected and connected in series by the sequential tensions of the respective cross-sectional structures and the PS strands, the PSC U girder with segment girders . In a continuous bridge PSC U girder constituting a bridge girder by continuously connecting PSC U girder segments,
Wherein the continuously connected PSC U girder is composed of an outer segment girder and a spanwise middle segment girder wherein the outer segment girder is a girder in which the alternate flank segment girder and the pierce flank segment girder are integrated with one segment girder, The upper flange of the predetermined section has a closed structure with a step, and the slab placed on the upper surface of the upper flange closed in the alternate focal section has a thicker section than the other sections, And the primary side PS wire fixing portions for primary PS wire which bear the load of the girder are respectively formed on the lower flange end portions of both side lower surface flange ends of the outer side segment girder and the lower side flange of both side surface inner side portions and are tied to the lower edge of the girder bottom portion of the outer side segment girder, Segment girders are connected at the top of the flange and at the top of the abdomen. And at the upper end of the lower flange and the upper part of the abdomen, the connecting joint is tensioned with the adjacent spanwise center segment girder at the upper edge of the girder and the upper end of the outer segment of the girder, The PS girder is composed of the continuous connection primary PS steel wire fusing unit and the continuous connection secondary PS steel wire fusing unit for continuously connecting the segment girders to each other, After synthesis, the continuous connection will be sequential continuous tension by sequential connection and sequential connection, the sequential connection of the segment girder after the synthesis of the slab is tensioned continuously, the secondary PS liner with the fuselage part and the PS liner are connected continuously to the segment girder before the slab And the upper end of the PS wire is positioned at the upper end of the PS wire, The secondary segment wire girder is connected to the outer segment girders at both side end portions thereof. The primary segment wire girder is connected to both the lower flange end portions of both side faces of the span center segment girder and the upper side of the inner lower flange portion of the girder, And a joint joining PS steel wire fusing part for joining the segment girders to the upper flange upper part and the upper girth part of the connecting joint part of the span center part segment girder respectively and being adjacent to the upper flange and the lower girder at the upper part of the girder And a seam girder connected continuously before the slab is combined with the continuous stranded PS strand and the continuous stranded PS strand constituting the continuous connection strand. After the synthesis of the slab, The continuous stranded stranded continuous stranded PS strand is composed of a structure which is located at the upper end of the continuous stranded primary strand strand which continuously ties the segment girders before the slabs are combined, Characterized in that the central segment girder is organically connected and continuously connected by the sequential tensions of the respective cross-sectional structures and the PS steel strands, the PSC U girder with segment girders. 5. The method of claim 4,
The fixing block on the upper flange of the alternating fulcrum portion of the alternating fulcrum segment girder is used only for the primary tension and the fixing block on the upper flange of the connecting flange on the other side has the primary tension and the segment Wherein the fixing block on the upper flange of the connecting joints on both sides of the bridgehead segment segment girder is used only for the tensioning of the segment girder connecting joints, The upper and lower flanges and the abdominal cross section of the connecting joints of the respective segment girders are connected to the upper portion of the lower flange of the side portion of the girder, Wherein the segment girder is made of a structure thicker than the other sections. A PSC U girder. 5. The method of claim 4,
Wherein the continuous connection of each of the jointed segment girders is formed by a continuous connection primary PS steel wire fusing portion which is tensioned prior to the slab assembly located at the upper end portion of the alternating fulcrum portion of the alternate flank segment girders, Continuous connection after tensioning of the slab in place. Secondary PS wire in the fuselage. Segment girder, pier spigot segment girder, span in the secondary fuselage fuselage. Continuous connection throughout the entire length of the stern segment girder. PSC U girder bridge with segmented girder characterized by continuous tensioning. 5. The method of claim 4,
A concrete concrete fixing block for maintenance is formed in the alternate focal point portion of the alternate flank segment girders, and a plurality of concave PS steel wire fitter portions having a trumpet shape are installed in the concrete fixing block so that the steel fixing port can be inserted in maintenance And a plurality of concave PS wire fixing portions of the trumpet shape are provided inside the fulcrum portion of the piercing branch portion segment girder or a direction changing portion through which the PS wire is passed is reinforced by an external steel wire inside the girder during public use PSC U Girder Bridge Using Segmented Girder. 5. The method of claim 4,
Wherein the alternate flank segment girders are constructed such that the abdomen and the upper flange are spaced apart from each other by a certain distance to form a lower flange, and the lower flange is formed to have a thicker section than the inner side portion of the PSC U girder. 5. The method of claim 4,
And a connecting joint PS wire liner fixing unit for connecting a segment girder to the upper end of the abdominal portion of the alternating fulcrum segment girder and the spanwise center segment girder to combine the slabs to resist the slab load generated at the piercing point portion, A portion of the bridge girder which is spaced from the pierce point portion of the bridge girder by a predetermined distance from the upper portion of the bridge girder and the upper portion of the girder of the bridge girder, A continuous PS primary wire strand is continuously connected to the alternating flank segment girder so as to continuously tie the segment girders to each other before the slab composite, Continuously connected to the girder, past the bridge spots on both sides, The primary PS strand is a PS strand that shares the slab load and is constructed to be tensioned from the center of the girder to the bottom of the girder. PSC U girder bridges with feature segment. 6. The method of claim 5,
Wherein an upper end of the alternate fulcrum portion of the outer side segment girder is composed of a lower flange spaced apart from the abdomen and the upper flange by a predetermined distance, and the lower flange is formed to have a thicker section than the inner portion of the girder. 6. The method of claim 5,
The fixing block on the upper flange of the alternating fulcrum part of the outer side segment girder is used for the primary tension only and the fixing block on the lower flange of the connecting flange on the other side has the primary tension and the segment girder The fixing block on the upper flange of the connecting joints on both sides of the spanwise center segment girder is also used for joint tension between the primary tension and the segment girder, Wherein the upper, lower flange and abdominal cross-section of the connecting joint of each segment girder is thicker than the cross-section other than the portion. 6. The method of claim 5,
The continuous connection of each of the spliced seam girders is made by a continuously connected primary PS steel wire fusing part which is tense before the slab combination located at the upper end bump end of the alternate focal point of the outer segment girders and a slab Wherein the continuously connected primary PS strand and the continuously connected secondary PS strand are continuously connected by tensioning the continuously connected primary PS strand and the continuously connected secondary PS strand over the entire length of the outer segment of the segment girder and the span of the span middle segment girder, PSC U girder bridge with girder. 6. The method of claim 5,
A plurality of concave PS steel wire fusing parts having a trumpet shape are installed in the concrete fusing block so that the steel fusing fixture can be inserted and maintained during maintenance, And a plurality of concave PS wire fixing portions of the trumpet shape or a direction changing portion through which the PS steel wire is passed are provided inside the fulcrum portion of the piercing branch portion segment girder, PSC U girder bridge using. delete delete delete

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