KR101519086B1 - Bridg using t-girder with pile supporting apparatus and bridge continuous construction method using the same - Google Patents

Abstract

The present invention relates to a bridge construction method using a precast T-girder, which is stable and can be rapidly constructed by installing piles, simply assembling and installing precast coping units for piers and abutments on the head part of the pile, and consecutively installing the precast T-girder between the precast coping units for piers and abutments. The method comprises the step of installing the precast coping units for piers and abutments to be supported on the head part of the pile, and making the precast T-girder hung on an upper surface of the precast coping unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to bridges and bridges, and more particularly, to bridges and bridges using precast T-

The present invention relates to a bridge and a bridge construction method using a precast T-type girder. More precisely, a precast T-type girder which can easily and reliably connect the precast coping portion for alternating and piercing to the installed pile head, and then the T-type girder can be interposed between the precast coping portions, And a method of constructing a bridge.

FIG. 1A shows a construction sectional view in the construction of a conventional bridge at sea.

That is, the bottom portion is inserted into the support layer in the ground 12, the upper portion is composed of a plurality of pile columns 4 integrally provided with the coping portion 30 of the bridge, and a plurality of pile columns are integrally connected to the lower portion. (5), a girder (4) and a slab (5), which are supported at the bottom by a plurality of coping portions and installed in the longitudinal direction of the bridge, so that a plurality of pile columns (4) It is economical because no separate footing and columns are installed, and the earthquake performance is greatly improved by dispersing the momentum in a specific part of the structure in the entire structure, A bridge structure is disclosed.

As a result, it can be seen that such a pile-column-integrated bridge structure can be used as a method capable of constructing a rapid bridge in a maritime bridge construction since a foundation is not separately installed in the bridge construction.

At this time, the coping portion 3 is formed by first forming the coping portion 3 on the ground, then, after the installation of the plurality of pile columns 4 is completed, the coping portion 3 is lifted up, 4 and the lower portion of the coping portion 3 can be connected. That is, it can be said to be a pre-cast method.

Alternatively, after the installation of a plurality of pile columns 4 is completed, a mold of the coping portion 3 is formed in succession to a reinforcing bar protruding from the upper portion of each pile column 4, It is possible to form the coping portion 3 by pouring the concrete. In other words, it can be said that it is a spotted concrete method.

In this case, it is preferable to use the pre-cast method because there is a problem in that it is not fit to the purpose of rapid construction when the sea piling concrete method is used at sea.

Figure 1b is a precast pier and its construction method.

That is, the column connecting rod 26 is formed so as to protrude upward on the upper surface of the pierced column portion 2, and the insertion hole 31 is formed on the bottom surface of the coping portion 3 provided on the pierced column portion 2 have.

It can be seen that a coupling plate 32 in the form of a horizontal plate is embedded in the inner surface of the insertion hole 31. A through hole 34 into which the column coupling rod 26 is inserted is formed in the coupling plate 32 And an entry hole 33 is formed at a position corresponding to the through hole 34 from the upper surface of the coping portion 3 to the through hole 34.

So that the column connecting rod 26 is inserted into the through hole 34 of the coupling plate 32 and the shrinkage concrete 35 is filled in the through hole 34. As a result, 2) are coupled to each other.

However, in this structure, since the load transferred to the head portion of the pierced column portion 2 is concentrated on the coupling plate 32, an excessive stress can be concentrated on the coupling plate 32. If structural reinforcement is required, There is a problem that it is difficult to secure the integrity of the coping portion 3.

Accordingly, the present invention is particularly applicable to the construction of short span and multi span bridges, in which the pre-cast coping portion for alternating and piercing can be easily connected to the pile for easy construction, and rapid construction is possible. The present invention is directed to a method for constructing a short-span and multi-span bridge using precast T-shaped girders which are structurally effective by easily reinforcing the connection portion between the coping portion and the pile.

In order to achieve the above object,

First, the shifts are assembled and assembled simply by using the file, the alternate precast coping part and the precast alternate part.

Also, the piers are simply assembled and constructed using only precast coping parts and piles for piers.

At this time, the alternate-use and pier-type precast coping portions are formed so that the file insertion holes pass through the alternate-use and pierched precast coping portions so that the pile head can be inserted.

In other words, the file head is installed in such a manner that the file insertion hole of the pre-casting coping portion for the alternating use and the pier is inserted, and the pile head support is installed so as to traverse the inside of the pile insertion hole so that the pile head is hooked inside the pile insertion hole .

Such pile head supports are preformed in the fabrication of the pre-cast copings for alternating and piercing so that the field work for supporting the pile head is very simple.

At this time, the pile head support can be variously shaped such as a cross shape, a straight shape, and the top surface of the pile head is supported while being in contact with the bottom surface of the pile head support.

Secondly, after the head of the file is installed so as to be supported by the pile head support for the alternating and piercing precast coping portions, a filling finishing material such as non-shrinkage concrete is inserted in the pile insertion hole, So that the files and the precast coping portions for alternating and piercing are integrated with each other.

At this time, the charging finishing material can be limited to the head of the pile, and the pile head stiffener is installed to reinforce the pile head. These pile-head stiffeners are inserted into the pile hollow and can be simply hung and installed.

The pre-cast T-type girder can be mounted on the alternate-use and pier-type precast coping unit. The precast T-type girder can be used as a bottom plate, So that the lateral connection can be easily made.

Fourth, the longitudinal connecting bars are pulled out on the connecting end surfaces of the adjacent T-shaped girders by being placed on the alternate-use and pier-type precast coping portions, and the continuous connecting portion reinforcing bars are formed on the precast- In addition, in the case of the continuous point portion, the upper continuous steel is installed on the connection end surface of the precast T-type girder so that the continuous continuous portion can be reinforced and a simple continuous construction of the precast T- .

Fifth, the alternate pre-cast coping portion is formed by forming the precast alternate portion into a closed form, and by placing the alternate pre-cast coping portion on the upper portion of the precast alternate portion, quick and efficient alternate construction is possible .

In the present invention, the assembly is simply assembled and assembled using a file, alternate precast coping portion and precast alternate portion, and the bridge is simply assembled using only the precast coping portion and the pier for the bridge. Thereby enabling quick construction of the bridge.

Further, the pile head is installed in the pile insertion hole of the pre-casting coping part for pile and pillar for concrete alternate pile, and the pile head is supported while being inserted into the pile support part, so that stable installation and height setting of the pile can be achieved.

That is, after the height of the pile head is aligned, the pre-cast coping portion for the alternating pillar and the pier is installed to enable quick construction.

In addition, the precast coping for pivoting and piercing is completed simply by filling and curing the filling finishing material so that the pile head support is embedded in the pile insertion holes of the alternating and piercing precast copings, Is performed on the upper portion of the precast coping portion for the alternating use and the pier, so that the workability and workability are greatly improved.

In addition, the precast T-type girder can serve as a bottom plate, and it can effectively resist the flexural moment generated by the upper continuous steel at the continuous focal point, It is possible to sufficiently secure the structural integrity by the above.

In addition, it is possible to construct the alternate pre-cast alternating wall part with a small weight by extending the file to the alternating pre-cast coping part installed on the top surface of the precast alternating part, Rapid construction is possible.

1A is a cross-sectional view of a bridge using a conventional file and a coping portion,
1B and 1C are cross-sectional views of a precast pier construction using a conventional file and a coupling plate,
Figures 2a and 2b are a combined perspective view of a precast coping portion of the present invention and a file head support and a file,
Figures 3a, 3b and 3c are installation perspective views of embodiments of a pile head support of the present invention,
Figure 4a shows the T-type girder and lateral coupling of the present invention,
Figure 4b is a perspective view of the alternate and pier precast coping portions of the present invention,
Fig. 4C is a sequential construction view of a T-type girder, a precast coping portion for a pier and a T-type girder according to the present invention,
5A and 5B are a construction flowchart (short span) of the bridge sequencing method using the precast coping portion of the present invention,
5C and 5D are construction sequence diagrams (multiple spans) of the method of continuing a bridge using the precast coping portion of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Precast coping portion 200 and pile head support 100]

FIGS. 2A and 2B show a perspective view of the precast coping part 200 and the pile head support 100 of the present invention.

The precast coping unit 200 includes all the alternate and pierced precast coping units 200a and 200b to be described later.

The precast coping unit 200 is manufactured in advance in a factory, and is manufactured in a size capable of construction and quality control in manufacturing, transportation, and installation.

The precast coping part 200 is installed in such a manner that the end part of the precast T-shaped girder 600, which will be described later in the present invention, is placed on top of it.

This precast coping unit 200 is integrated with the file 300 while supporting the precast T-girder 600.

That is, the pre-cast coping part 200 is formed with a file insertion hole 210 as shown in FIG. The number of the file insertion holes 210 is determined according to the number of the installed files 300. The number of the file insertion holes 210 can be formed when the precast coping unit 200 is manufactured and the precast coping unit 200 can be vertically passed Respectively.

2A, the corrugated steel tube 211 is previously set in the formwork of the precast coping unit 200 to be easily formed when the precast coping unit concrete is poured, The vertical grooves 212 formed in the corrugated steel pipe may be horizontally disposed.

The pile head support 100 is formed to be installed at the time of manufacturing the precast coping portion 200 so as to traverse the inside (roughly intermediate portion) of the pile insertion hole 210.

It can be seen that the pile head support 100 is formed in a cross shape by arranging the two vertical plate members 130 so as to cross each other.

At this time, both end portions of the cross-shaped pile head support 100 are formed to be embedded in the precast coping portion 200, and a shear connection member 110 (stud) is formed at both ends for ensuring the integrity, The pile support 200 is fixed to the pile head support 100 to prevent deformation and damage due to the support of the pile 300. [

In addition, the bottom surface of the vertical plate 130 further defines a horizontal bottom flange 120 so that the top surface of the pile 300 can be effectively supported.

The reason for installing the pile head support 100 in the form of a vertical plate having a horizontal bottom flange is that it is very advantageous to secure sufficient flexural rigidity when the upper surface of the pile 300 is bent or deformed while contacting the upper surface thereof.

In addition, the use of the vertical plate prevents the pile head support 100 from interfering with the filling of the filling finishing material 400, which will be described later, and prevents interference with the passage of the hollow extended reinforcing bars 530 of the pile head reinforcement 500 It is not.

The head portion of the file 300 is inserted into the file insertion hole 210 of the precast coping portion 200 from below so that the top surface of the head portion 300 of the file 300 is stably supported on the bottom surface of the precast coping portion 200 And the horizontal adjustment of the precast coping portion 200 according to the height of the top surface of the pile 300 can be performed.

2A, a hole penetrating the top of the pile 300 is formed to effectively fix the horizontal bottom flange 120 to the upper surface of the pile 300, and the arc-shaped fixing bracket 310 mounted on the horizontal bottom flange is punched The fixing bracket 310 is fixed to the pile head by using bolts and nuts (not shown) so as to be positioned on the inside and the outside of the pile head, so that the pile support 100 can be stably supported.

In addition, FIG. 2B shows that the file head stiffener 500 is installed at the head of the file 300.

The pile stiffener 500 is inserted into the hollow of the pile 300 and can be easily hung and installed. In order to close the filling finishing material 400, a hollow finishing plate 510, a hollow finishing plate 510 And a part of the retaining bar 520 is hooked on the upper surface of the pile 300 and the remaining reinforcing bars 530 are extended to be located inside the pile insertion hole on the pile head .

The hollow finishing plate 510 serves to prevent the hollow finishing plate 510 from leaking to the bottom of the hollow finishing plate 510 even if the filling finishing material 400 is filled by closing the hollow according to the hollow shape of the pile 300,

The lower end of the hollow fastening reinforcement 520 is connected to the outer side of the hollow finishing plate 510 to set the position of the hollow fastening plate 510. The upper end of the hollow fastening reinforcement 520 is formed on the upper surface of the pile 300 It can be seen that it is formed in the shape of a hook to be hooked.

The remaining hollow reinforcing bars 530 pass through the hollow finishing plate 510 and are fixed at the lower end and the upper end of the hollow reinforcing bars 530 is extended higher than the upper surface of the pile 300 to be positioned inside the hollow S of the pile insertion hole 210 .

If the pile 300 is supported on the pile head support 100 of the precast coping part 200 with the pile head stiffener 500 installed on the head of the pile 300 in advance, It will be appreciated that since the pile head support 100 is of vertical plate construction, it extends around the pile head support 100 and easily extends into the hollow S of the pile insertion hole 210. [

As shown in FIG. 2B, the filling finishing material 400 may be made of non-shrinkage concrete. The filling finishing material 400 is filled in the file insertion hole 210. The filling finishing material 400 is filled in the upper hollow space by the hollow finishing plate 510, The file insertion hole 210 is closed and the file 300 and the precast coping unit 200 are structurally integrated with each other.

Next, the file 300 is formed such that the inner hollow is formed on the basis of the PHC file, and the top surface of the head is supported on the bottom surface of the pile head support 100 as described above.

When the plurality of files 300 are installed on the ground, the final heights are different from each other. If the cutting is performed to adjust the height of the pile 300, the top surface of the pile 300 is brought into close contact with the bottom surface of the pile head support 100 so that the support area of the precast coping part 200 is maximized desirable.

Figures 3a, 3b and 3c show perspective views of embodiments of the pile head support 100 of the present invention.

The pile head support 100 may be installed in advance in the production of the precast coping part 200. The pile head support 100 may be installed on the bottom surface of the pile 300 to be in contact with the top surface of the pile 300, So as not to interfere with the upward extension of the hollow elongated reinforcing bar 530 constituting the pile head stiffener 500 as described above. Such embodiments will be described below.

Referring to FIG. 3A, the pile head support 100 has a cross-shaped vertical plate. That is, it can be seen that the two vertical plates intersect at right angles to each other, and both ends are embedded in the inside of the precast coping portion and fixed by the shear connector 110.

At this time, the vertical plates may be formed by welding the vertically separated plate members so as to easily intersect with each other.

It can be seen that they are formed in a linear shape spaced apart in the transverse direction according to FIG. 3B. In other words, it can be seen that two or more vertical plates are arranged in parallel and both ends are embedded in the inside of the precast coping portion and fixed by the shear connector 110.

3C, it can be seen that the upper surface of the pile head is brought into contact with the bottom surface of one U-shaped vertical plate and the other vertical plate is fixed to the side surface of the U-shaped vertical plate in contact with the upper surface of the pile head. have.

[Bridge using alternate precast coping portion 200b and precast T-shaped girder 600]

Fig. 4A shows a T-shaped girder and a lateral coupling of the present invention, and Fig. 4B shows a perspective view of a precast coping portion for alternating and piercing of the present invention.

The alternate precast coping unit 200b is installed on the top surface of the precast alternating unit 700 as shown in FIG. 4B. The precast alternating unit 700 is formed so that the file 300 passes through.

The precast alternating section 700 is installed in a prefabricated manner. As shown in FIG. 5A, the precast casting alternating section formed by the vertical wall body 720 integrally formed with the bottom plate 710 and the bottom plate 710, The precast alternating section is constructed in such a manner that it is continuously installed.

It can be seen that the outermost precast segment shift portion is formed in the form of a closed rectangular frame in a state in which the assembly is completed to further form the side wall finishing plate 730.

At this time, it can be seen that the bottom plate 710 has a through hole 711 formed therein so that the file can be penetrated. At this time, the space separated from the inserted file 300 and the through hole 711 is filled with back- 300 and the precast segment alternating section 700 are effectively supported by each other.

It can be seen that the alternate precast coping portion 200b is mounted on the upper surface of the both side wall finishing plate 730 and the vertical wall body 720 in a form of shear keys and shear grooves.

At this time, although not shown, the precast alternating section 700 is divided into upper and lower precast casting shift sections 700 formed by vertical walls 720 formed integrally with the upper and lower plates 710 and 710, The file is stacked to be adjustable in height and the file is extended to the file insertion groove of the alternate precast coping portion 200b so that the file 300 is positioned in the precast alternate portion 700, (The file is wound and both ends are inserted into the vertical wall).

The alternate precast coping portion 200b is formed to include a transverse body portion 220, a vertical wing portion 230, a longitudinal connecting bar 240 and a rear wall portion 250 as shown in FIG. .

First, the transverse body 220 has a predetermined thickness and is formed in a plate shape extending in the transverse direction, and a plurality of the file insertion grooves 210 are formed to be spaced apart from each other.

It is noted that the vertical wing portion 230 is formed integrally with the rear wall portion 250 at both ends of the transverse body portion 220. At this time, both vertical wings 230 are formed at the end of the transverse body 220 higher than the upper surface of the transverse body 220.

5A, the protruding support portion 251 is integrally formed with the back wall portion 250. The protruding support portion 251 is provided with a connection slab (not shown) .

5A and 5B, the precast shift unit 700 is manufactured in a factory and is installed in the site to be installed. At this time, since the file 300 is installed in advance, the bottom plate 710 is inserted into the file 300, The head of the file 300 is installed to be directly supported on the pile head support 100 formed in the file insertion groove 210 of the alternate precast coping portion 200b.

In this case, the precast alternating section 700 is first inserted into the installed file 300, and the alternate precast coping section 200b is mounted on the upper part. Are integrated with each other by a filling finishing material (400).

At this time, a precast T-shaped girder 600 is mounted on the upper surface of the alternate precast coping portion 200b. 5b and 5d, one end of the precast T-girder 600 is connected to the alternate precast coping portion 200b and the other end is connected to the bridge precast coping portion 200a (multiple spans) or the alternate precast coping portion 200b, short span).

As shown in FIG. 4A, the pre-cast T-shaped girder 600 includes a top plate flange 610 and a belly 620, .

The upper plate flange 610 is composed of an upper plate 611 and an extended lower plate 612 having an expanded sectional area on the lower surface of the upper plate 612. Both ends of the lower plate 612 have a thickness Shaped end portion 613,

The abdomen 620 is formed as a vertical member downward at the central portion of the bottom surface of the extension bottom plate 612 and the end surface A1 of the abdomen is attached to the lateral body portion 220 side of the alternate precast coping portion 200b So that the bottom end surface A2 of the tapered end portion 613 is supported on the upper surface of the transverse body portion 220.

The precast T-shaped girder 600 is configured such that one end portion formed by the saw tooth-shaped end portion 613 is mounted on the upper surface of the alternate pre-casting coping portion 200b, and the extended bottom plate 612 ) Are brought into contact with each other so that the space between the upper plate portions adjacent to each other in the transverse direction is finished with a filling finishing material (non-shrinkage concrete, 400).

A transverse connecting reinforcing bar 630 is formed on the side surfaces of both upper plates of the adjacent precast T-type girders 600 spaced from each other with reference to the file insertion hole 210 of the alternate precast coping portion 200b Type girder 600 and the other transverse connecting reinforcing bars 630 of the adjacent precast T-girder 600. As shown in Fig.

And the longitudinal connecting reinforcing bars 640 are exposed so as to extend in the space on the upper surface of the alternate precast coping portion 200b.

The longitudinal connecting reinforcing bars 640 of the precast T-shaped girder 600 are exposed on the upper surface of the alternate precast coping portion 200b so that the file insertion grooves 210 exposed in the alternate precast coping portion 200b (Not shown).

The alternate precast coping portions 200b are spaced apart from each other in the longitudinal direction as shown in FIG. 5B, and a precast T-shaped girder 600 is mounted between the alternate precast coping portions 200b, It can be seen that they are integrated.

[Bridges using bridge precast coping portion 200a and precast T-shaped girder 600]

Fig. 4C illustrates the constructor attempt at successive points of the piercast precast coping portion 200a and precast T-girder 600 of the present invention. In this case, the meaning of the continuous point means the point where the bridge portion is installed in the middle of both shift portions and the girder is adjacent to each other and connected to each other (connected to each other) based on the bridge portion, thereby generating the final bending moment.

As shown in FIG. 4C, the pierched precast coping portion 200a is supported on the pile 300 while supporting the ends of the vertically adjacent precast T-type girders 600 at successive point portions, The vertical barb 220 and the vertical barb 230 and the continuous fulcrum connecting bar 260 as shown in FIGS. 4A and 4B.

The transverse body 220 has a predetermined thickness and extends in the transverse direction, and a plurality of the file insertion grooves 210 having the pile head support 100 are formed to be spaced apart from each other.

It is understood that the vertical wing portions 230 are integrally formed at both ends of the transverse body portion 220.

When the file 300 is integrated with the precast concrete precast coping part 200a as shown in FIG. 4c, the precast T-girder 600 (longitudinal direction) Are spaced apart from each other in the longitudinal direction on the upper surface of the bridge precast coping portion 200a.

If the precast T-shaped girder 600 is viewed as a slab of a bridge, it is also possible to use a T-shaped section.

As shown in FIG. 4B, the pre-cast T-shaped girder 600 is formed to have a T-shaped cross section and includes an upper plate flange 610 and a belly 620.

The upper plate flange 610 is composed of an upper plate 611 and an extended lower plate 612 having an expanded sectional area on the lower surface of the upper plate 612. Both ends of the lower plate 612 have a thickness Shaped end portion 613,

The abdomen portion 620 is formed in the shape of a vertical member at the center of the bottom surface of the extension bottom plate 612 so that the end surface A1 of the abdomen is in contact with the side surface of the transverse body portion 220 of the piercings precast coping portion 200a And the bottom end surface A2 of the tapered end portion 613 is supported on the upper surface of the transverse body portion 220.

The pre-cast T-shaped girder 600 is formed such that one end portion formed by the saw tooth-shaped end portion 613 is mounted on the upper surface of the piercing precast coping portion 200a, (Non-shrinkage concrete) 400 in the space between the upper plate portions adjacent to each other in the lateral direction so that the side surfaces are in contact with each other.

As shown in FIGS. 4A and 4C, on both connecting end surfaces of adjacent precast T-type girders 600 spaced from each other with reference to the file insertion hole 210 of the pier casting precast coping portion 200a, Shaped girder 630 and are connected to the other transverse connecting reinforcing bars 630 of the precast T-shaped girder 600 adjacent to the transverse direction. And the longitudinal connecting reinforcing bars 640 formed to extend in the space of the upper surface of the precast coping part 200a for pier at the continuous point part are exposed.

The longitudinal connecting reinforcing bars 640 of the precast T-shaped girder 600 are exposed on the upper surface of the precast coping part 200a for piercing so that the precast coping parts 200a of the pier are exposed. And are integrated with each other by the filling finishing material 400 including the file insertion groove 210 so as to be overlapped with the continuous fringe connecting reinforcing bars 260 exposed on the upper surface of the body portion.

Further, the longitudinal connecting bars 640 formed on the connecting end surfaces of the precast T-type girder 600 for lateral longitudinal sequencing of the precast T-type girders 600 at the consecutive focal points and for additional bending moment resistance, The adjacent precast T-type girder 600 is continuous by using the upper continuous steel material 280 having one side formed in a hook shape.

A claw portion 281 is formed on one side of the upper continuous steel member 280 and a reinforcing bar having an annular portion 282 formed on the other side is connected to a coupler,

And the reinforcing bars formed with the claw portions 281 on one side and the other side are formed by connecting the reinforcing bars with each other by a coupler.

As a result, it can be seen that the pawl portion 281 and the annular portion 282 are hooked or penetrated by the upper cast iron muscle 270.

Also, in the case of the upper plate portion 611 of the precast T-shaped girder 600, the transverse connecting reinforcing bars 630 are also formed on the side surfaces adjacent to the transverse direction, so that it is advantageous to integrate the precast T-shaped girders in the transverse direction.

[Construction method of bridge using precast T-type girder]

[Bridging method using T-shaped girder 600 using pile head support 100 (short span)]

5A and 5B illustrate a flowchart of a bridge construction method using a T-type girder 600 using a pile head support 100 in a single span form of the present invention.

In the case of the present invention, both alternate side piles 300 are installed, and the precast alternation part 700 is installed in the piles so that they are spaced apart from each other in the longitudinal direction And a precast t-shaped girder 600 is mounted between the alternate precast coping portions 200b after the alternate precast coping portions 200b are installed in the precast alternating portion 700, .

As shown in FIG. 5A, when a bridge is installed, the file 300 is first installed on the ground in the manner of hammering, indenting, or inserting.

Since the file 300 is for directly supporting the alternate precast coping part 200b, a plurality of the files 300 are installed, and the upper end of the file 300 can maintain a constant height through cutting and the upper surface of the head is closed to be flat .

Of course, it can be seen that a large number is installed in the lateral direction on both shift sides, and a PHC file or a steel pipe can be used.

Next, a prefabricated file head stiffener 500 is installed on each of the files 300.

Accordingly, the hollow finishing plate 510 is positioned in the upper hollow of the pile so that leakage due to the filling of the filling finishing material 400 is prevented, and the structural integrity of the precast coping part 200 by the hollow elongated reinforcing bars 530 It is advantageous for securing it.

At this time, the upper end of the hollow reinforcing bar 530 constituting the pile head stiffener 500 is positioned inside the file insertion hole 210 and the upper end of the hollow reinforcing bar 530 is bent, So that the fixing ability can be ensured.

Next, many of the precast shift units 700 are installed so that the files 300 pass through. That is, a plurality of precast alternating sections 700 are installed in the lateral direction so as to penetrate the through holes 711 formed in the bottom plate 710 of the precast alternating section 700, thereby enabling rapid construction.

That is, the precast alternating section 700 is formed by vertically stacking a precast segment shift section 700a of a cubic shape formed by a vertical wall body 720 integrally formed with a bottom plate 710 and a bottom plate 710, And the file is extended to the file insertion groove of the alternate precast coping portion 200b.

Next, the alternate precast coping portion 200b is lifted by using a lifting device such as a crane, and then is lifted up to the upper surface of both the side wall finishing plate 730 and the vertical wall body 720 of the precast shift portion 700 It can be seen that the alternate precast coping portion 200b is simply mounted on the front end key and in the form of a front end groove.

The upper surface of the head 300 of the file 300 contacts the lower surface of the pile head support 100 previously formed in the file insertion hole 210 of the alternate precast coping portion 200b, It can be seen that the coping portion 200b can be stably supported and installed.

Next, as shown in FIG. 5B, the precast T-shaped girder 600 as viewed previously is placed between the upper surfaces of the alternate precast coping portions 200b so that the upper plate portions 611 are adjacent to each other in the transverse direction do.

So that the lateral connection reinforcing bars 630 formed on the connection end face of the expansion bottom plate 612 are connected to each other.

Next, the upper end of the file and the upper space of the file insertion groove 210, the space of the alternate precast coping portion 200b, and the space of the precast T-shaped girder 600, which are closed by the hollow closing plate 510 inside the file 300, The charging finishing material 400, such as non-shrinkage concrete, is integrally placed and closed in the transverse connection space.

At this time, both vertical wing portions 230 of the alternate pre-cast coping portion 200b serve as an end formwork of the filling finishing material and play an important role in restraining the position of the precast T-type girder 600 .

The through hole 711 formed in the bottom plate of the alternate precast coping portion 200b is filled with the backing soil so that the pile 300 is filled with the backing slurry, And the precast segment shift portion 700a are effectively supported by each other.

The precast T-shaped girder 600 and the alternate precast coping portion 200b are integrally formed with the file 300 by the pile head support 100, the pile head reinforcement 500 and the filling finishing material 400 And it can be seen that the workability is improved by the assembled installation.

[Bridges construction method using T type girder and pile head support (multi span)]

Figures 5c and 5d show a flow diagram of a bridge construction method using the multi-span T-type girder and pile head support of the present invention.

In the case of the present invention, both the alternating portion and the pier portion pile 300 are constructed in such a manner that a bridge portion is further provided between the alternating portions and a girder is installed between the alternating portion and the pier portion. And the alternate precast coping portions 200b are provided in the precast alternating portion 700. The precast coping portion 200b is provided with the alternate precast coping portions 200b, Type girder 600 is mounted between the bridge precast coping portion 200a and the alternate precast coping portion 200b after the bridge precast 200a is installed in the bridge pile 300 as well .

As shown in FIG. 5C, when the bridge is installed, the alternating portion and the pier portion file 300 are first installed on the ground by hammering, indenting, and inserting methods.

Since the file 300 is for supporting the precast coping portion 200a and the alternate precast coping portion 200b, a plurality of the precast coping portions 200a and 200b can be installed, And the upper surface of the head is closed to be flat.

Of course, it can be seen that a large number of transversal directions are installed at both the alternating portions and the pier portion side (consecutive focal points), and a PHC file or a steel pipe can be used.

Next, the prefabricated file head stiffener 500 is installed in each of the files 300 as well.

Next, many of the precast shift units 700 are installed so that the files 300 pass through. That is, a plurality of precast alternating sections 700 are installed in the lateral direction so as to penetrate the through holes 711 formed in the bottom plate 710 of the precast alternating section 700, thereby enabling rapid construction.

That is, the precast alternating section 700 is formed by vertically stacking a precast segment shift section 700a of a cubic shape formed by a vertical wall body 720 integrally formed with a bottom plate 710 and a bottom plate 710, And the file is extended to the file insertion groove of the alternate precast coping portion 200b.

Next, the alternate precast coping portion 200b is lifted by using a lifting device such as a crane, and then is lifted up to the upper surface of both the side wall finishing plate 730 and the vertical wall body 720 of the precast shift portion 700 It can be seen that the alternate precast coping portion 200b is simply mounted on the front end key and in the form of a front end groove.

The upper surface of the head 300 of the file 300 contacts the lower surface of the pile head support 100 previously formed in the file insertion hole 210 of the alternate precast coping portion 200b, It can be seen that the coping portion 200b can be stably supported and installed.

The pier casting pre-cast coping part 200a is lifted by using a lifting device such as a crane, and then the top surface of the pier part pile 300 is inserted into the pile insertion hole 210 of the piercing precast coping part 200a It can be seen that the piercings precast coping portion 200a can be stably supported and installed in the pile 300 while being in contact with the bottom surface of the pile head support 100 formed in advance.

Next, as shown in FIG. 5D, an end portion of the precast T-shaped girder 600, which has been described above, is placed between the upper surface of the bridge precast coping portion 200a and the alternate precast coping portion 200b, So that the upper plate 610 is in contact with each other.

The transverse connecting reinforcing bars 630 are connected to each other at the continuous point portion and the upper continuous steel member 280 is installed in the upper cast steel rope 270 of the precast T-shaped girder 600.

Next, the inside of the file top and the space above the pre-cast coping portions 200a and 200b for alternating and piercing, and the upper space of the file top and the pre-cast T-shaped girder 210, which are closed by the hollow finishing plate 510 inside the file 300, (Not shown), such as non-shrinkage concrete, is integrally installed in the transverse connection space of the main body 600 and closed.

At this time, the both vertical wings 230 of the piercopia and alternate precast coping portions 200a and 200b also serve as the end formwork of the filling finishing material and are important for restraining the position of the precast T- It will become a role.

The through hole 711 formed in the bottom plate of the alternate precast coping portion 200b is filled with the backing soil so as to cover the pile 300 and the pre- So that the cast segment shift portions 700a are effectively supported by each other.

The precast T-type girder 600, the precast coping portion 200a for piers, the precast coping portion 200b for alternation, the pile head support 100, the pile head reinforcement 500 and the filling finishing material 400 can be rapidly built together with the pile 300.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: pile head support 110: shear connector
200: Precast coping portion
200a: precast coping portion for bridge pier 200b: precast coping portion for alternation
210: a file insertion hole 220: a lateral body portion
230: vertical wing portion 250: rear wall portion
260: Continuous-point-side connecting bar
270: upper cast steel 280: upper continuous steel
281: claw portion 282: annular portion
300: File 310: Fixed bracket
400: Charge finish
500: Pile head stiffener 510: Hollow closed plate
520: hollow fastening bar 530: hollow elongated bar
600: pre-cast T-shaped girder 610: upper plate flange 611: upper plate 612:
620: abdomen 630: transverse connection reinforcing bar
640: longitudinal connection reinforcing bars
700: Precast shift portion 700a: Precast segment shift portion
710: bottom plate 711: through hole
720: vertical wall 730: side wall finish plate

Claims (12)

A transverse body portion 220 formed in a plate shape extending in the transverse direction and configured to penetrate a file insertion groove 210 having a pile head support 100 on its inner side; A vertical wing 230 formed at an end of the transverse body 220 at a height higher than a height of the transverse body 220; And an alternate precast coping portion 200b formed to include a rear wall portion 250 formed integrally with both vertical wing portions on a rear surface of the transverse body portion 220,
The pre-cast T-type girder (600) is mounted on an upper surface of the transverse body portion (220) so as to support both ends thereof,
An upper plate 611; An upper plate flange 610 having an expanded bottom plate 612 having an enlarged cross-sectional area at the bottom surface of the top plate 612 and a tapered end 613 having a thickness that is larger than an end of the expansion bottom plate 612 at both ends thereof; And an abdomen portion 620 formed in the shape of a vertical member at the center of the bottom surface of the expansion bottom plate 612. The bottom A2 of the horn end portion 613 extends in the transverse direction of the alternate precast coping portion 200b, , And the end surface (A2) of the abdomen (620) is provided so as to be in contact with the side surface of the transverse body. The method according to claim 1,
The bridge precast coping portion 200a is further provided between the alternate precast coping portions 200b, and the bridge precast coping portion 200a
A transverse body portion 220 formed in a plate shape extending in the transverse direction and configured to penetrate a file insertion groove 210 having a pile head support 100 on its inner side; And a pair of vertical wings 230 formed at an end portion of the transverse body 220 at a height higher than a height of an upper surface of the transverse body 220,
The pre-cast T-type girder 600 is mounted between the alternate precast coping portion 200b and the piercing precast coping portion 200a such that the upper ends of the transversely opposite side portions 220 are supported so as to support both ends And the bottom surface of the tapered end portion 613 is mounted on the upper surface of the transverse body portion 220 of the alternate and piercing precast coping portions 200b and 200a and the end surface of the abdomen portion 620 is disposed in the transverse direction A bridge using a precast T-type girder provided so as to be in contact with the side surface of the body portion (220). The method according to claim 1,
The alternate precast coping portion 200b is assembled and mounted on a precast alternating portion 700 in which precast segment alternating portions are assembled, and the precast segment alternating portion
A bottom plate 710 having a through hole 711 formed therein; And a vertical wall 720 integrally formed with the bottom plate 710; And a sidewall finishing plate 730 formed on the outermost vertical wall 720,
The alternate precast coping portion 200b is mounted on the upper surface of the bifurcated precast segment alternating portion formed with the side wall finishing plate 730,
And the upper surface of the pile 300 is supported on the bottom surface of the pile head support 100 of the alternate precast coping portion 200b by the pile 300 passing through the through hole 711. [ 3. The method of claim 2,
The pierched precast coping portion 200a is installed to be supported by the pile 300,
The file 300 is inserted into the file insertion groove 210 of the pier casting precast coping portion 200a so that the upper surface of the pile 300 is supported on the bottom surface of the pile head support 100 of the piercing precast coping portion 200a Bridges using precast T-type girders. The method according to claim 3 or 4,
The pile head support 100 is installed so as to traverse the inside of the pile insertion groove 210. The both ends of the pile head support 100 are formed to include a vertical plate 130 formed to be embedded in the precast coping portion 200, A pre-casting (110) stud is further formed at an end of the plate material 130 and a bottom surface of the vertical plate material 130 is formed as a horizontal bottom flange 120 so that the upper surface of the pile 300 can be supported. Bridges using T - type girders. 6. The method of claim 5,
A hole penetrating the head of the pile 300 is formed to fix the horizontal bottom flange 120 to the upper surface of the pile 300, and an arc-shaped fixing bracket 310 mounted on the horizontal bottom flange is positioned in the pile head, So that the fixing bracket 310 is fixed to the pile head so that the pile support 100 can be supported by the pile. The method of claim 3,
A file head stiffener 500 is further installed on the head of the file 300,
The pile head stiffener 500 is inserted into the hollow S of the pile and can be easily hung and installed, and is used as a finishing plate 510 for closing the filling finishing material 400.
And a hooking reinforcement 520 connected to the lower end of the hollow closing plate 510. A part of the retaining bar 520 is hooked to the upper surface of the pile and the remaining hollow elongate reinforcement 530 is inserted into the pile insertion hole Bridge using a precast T-type girder which is extended to the position. a) a bottom plate 710 having a through hole 711 formed therein; A vertical wall body 720 integrally formed with the bottom plate 710; And a sidewall finishing plate 730 formed on the outermost vertical wall 720. The sidewall finishing plate 730 is formed in a shape of an oblique squeezed in a state where the assembly is completed, And the alternate pre-cast coping portion 200b is mounted on the upper surface of the cast segment alternating portion so that the alternate pre-cast coping portion 200b is supported on the upper surface of the alternate pre- To be supported on a bottom surface of a pile head support (100) formed on a transverse body (220) of a pile (200b);
b) The bridge precast coping portion 200a is mounted on the bridge pile 300 and the bridge pile 300 is formed on the transverse portion 220 of the bridge precast coping portion 200a. (210), and is supported by a pile head support (100) installed in the pile insertion hole (210);
c) a precast T-girder (600) is mounted between the alternate precast coping portion (200b) and the upper surface of the bridge precast coping portion (200a) so as to be mounted thereon, Casting the pre-cast T-girders 600 on the upper surface of the upper portion 200a so as to be longitudinally spaced apart, and then continuing each other; And
d) filling the filling hole 400 in the file insertion hole so that the precast T-type girder 600, the alternate precast coping portion 200b, the pier casting precast coping portion 200a, And a step of integrating the bridges to construct bridges with multiple spans. 9. The method of claim 8,
The longitudinal sequencing of the precasted T-girder 600 of step c)
The upper continuous steel member 270 is attached to the upper longitudinal steel bars 270 provided in the transverse direction to the vertical connecting reinforcing bars 640 longitudinally exposed on the stepped surfaces of the upper plate 611 and the extended lower plate 612 of the precast T- 280 are connected to each other,
The upper continuous steel member 280 has a claw portion or an annular portion formed at one end thereof so that the pawl portion or the annular portion is caught or passed through the upper cast iron wire 270. 9. The method of claim 8,
The lateral sequencing of the precast T-girder 600 of step c)
The lateral connection reinforcing bars 640 exposed laterally on the stepped surfaces of the top plate 611 and the extension bottom plate 612 of the precast T-shaped girder 600 are filled in spaces between the top plates adjacent to each other in the transverse direction. 400) with a T-type girder and a pile head support. a) a bottom plate 710 having a through hole 711 formed therein; A vertical wall body 720 integrally formed with the bottom plate 710; And a sidewall finishing plate 730 formed on the outermost vertical wall 720. The sidewall finishing plate 730 is formed in a shape of an oblique squeezed in a state where the assembly is completed, And the upper portion of the alternate pile 300 is inserted into the through hole 711 so that the upper portion of the alternate pile 300 is inserted into the through hole 711 of the alternate precast coping portion 200b. To be supported on the bottom of the pile head support (100) formed on the transverse body (220) of the precast coping portion (200b);
b) placing a precast T-type girder (600) between the upper surfaces of the alternate precast coping portion (200b) and mounting; And
(c) transverse connecting reinforcing bars 640 exposed laterally on the stepped surfaces of the top plate 611 and the extending bottom plate 612 of the precast T-type girder 600 are charged Type girder 600, the alternate precast coping portion 200b, and the file (not shown) by using the filling finishing material 400, 300) are integrated with each other to construct a bridge by a short span. 12. The method of claim 11,
The alternate pre-cast coping portion 200b
A transverse body portion 220 formed in a plate shape extending in the transverse direction and configured to penetrate a file insertion groove 210 having a pile head support 100 on its inner side; A vertical wing 230 formed at an end of the transverse body 220 at a height higher than a height of the transverse body 220; And a rear wall part 250 formed integrally with both vertical wing parts on the rear surface of the transverse body part 220 so that the pile 300 is supported on the pile head support 100 A method of bridge construction using cast T - type girders.

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