KR20060114163A - Continuous structure system type precast prestressed concrete single slab girder bridge connecting and supporting the same bridge with one point supporting structure or strongly coupled integrated structure - Google Patents

Abstract

A continuous precast PSC(Prestressed Concrete) single slab girder bridge connecting and supporting the same bridge with a one-point supporting structure or a strongly coupled integrated structure is provided to improve the ductility and secure the safety according to the moment re-distribution effect. A continuous precast PSC(Prestressed Concrete) single slab girder bridge connecting and supporting the same bridge with an one-point supporting structure or a strongly coupled integrated structure is composed of the steps of manufacturing a precast PSC single slab girder(40) by applying the prestress to a first steel wire(51); installing the girder on the bridge which is the supporting point, and on the temporary support of the abutment; connecting the girder corner angle by a sole plate(98) at the connection unit between the girders of the supporting point; removing a temporary support(21) to replace as a permanent support(97) and having an one-point supporting continuous structure(54); connecting the steel wire between the girders by a connection unit steel wire slip clip loop apparatus and pouring the high strength non-contraction concrete; inserting a second supporting point PS steel wire(52) in the slab and introducing the tension force; constructing the girder after the installation(53) and a girder connection unit(70) completely and integrally connecting the girder; supporting on a pier(14) with the one-point supporting continuous structure; and making the complete continuous bridge completely and integrally connecting the girder.

Description

Precast PSSC single slab girder bridges connecting and supporting the same bridge with one point supporting structure (continuous structure system type precast prestressed concrete single slab girder bridge connecting and supporting the same bridge with one point supporting structure) or strongly coupled integrated structure}

        1 is a view showing a composite cross-section consisting of a precast PSC beam and a cast-in-place concrete bottom plate of the prior art connected to a simple PSC composite bridge connected to the point portion by a two-point supporting structure and the point bottom plate connected by reinforcing bars.

        Figure 2 is a conventional cross-sectional view consisting of a precast PSC beam and cast-in-place reinforced concrete floor plate, and supported by a two-point support structure to the point portion, connecting the girders of the branch portion with a PSC steel wire, and the branch portion and the bottom plate Is a drawing showing a simple IPC composite bridge connected by reinforcing bars.

        3 is a view showing that the continuous multi- furniture precast PSC single slab girder bridge of the present invention with one point support, and the secondary continuous steel is installed as a continuous bridge by continuously tensioning the point slab.

        4 is a view showing a continuous bridge rigidly connected to a branch as another embodiment of the continuous multi- furniture precast PSC single slab girder bridge of the present invention.

        5 is a view showing the rigid connection between the girder and the wall portion of one point as another embodiment of the continuous multi- furniture precast PSC single slab girder bridge of the present invention.

        Figure 6a is a cross-sectional view showing the central section and the PS steel wire arrangement of Figures 3, 4, 5 of the present invention.

        Figure 6b is a view showing a cross-section B-B showing the point cross section and PS steel wire arrangement of Figures 3, 4, 5 of the present invention.

        Figure 7 shows the transverse arrangement of the precast PSC single slab girder of the present invention and its connections.

       8 is a view showing a slab connection for connecting the precast PSC single slab girder of the present invention in the transverse direction.

       9 is a view showing a one-point support installed as a girder connection portion and a support of the continuous multi- furniture precast PSC single slab girder bridge of the present invention.

       10 is a view showing a pier steel fastening connection continuous multi- furniture structure of the girder connection and the pier of the precast PSC single slab girder of the present invention.

        11 is a view showing an alternating steel fastening connection continuous multi- furniture structure of the precast PSC single slab girder of the present invention by tightly connecting the girder connection portion and the alternate parapet portion.

        12 is a view showing a shear key by forming a groove portion at the end of the precast PSC single slab girder using a fixing device of the present invention.

        Figure 13 (a) is a view showing that the secondary point portion continuous steel wire disposed on the point portion of the continuous multi- furniture precast PSC single slab girder bridge of the present invention and fixed to the bottom surface of the slab.

       Figure 13 (b) shows a cross section A and cross section B of Fig. 13 (a) of the present invention.

       Figure 14 (a) (b) is a view showing a cross-sectional side to increase the width of the lower flange or to increase the abdominal height in order to increase the cross-sectional force of the precast PSC single slab girder of the present invention.

        15 is a view showing the fastening and hinge formwork easy to adjust the position so that the cross-section of the bridge is easy to change the cross section according to the curve and the standardized fixed section when manufacturing the continuous multi- furniture precast PSC single slab girder bridge of the present invention .

        Figure 16 shows the formwork longitudinal cross-sectional view of Figure 15, showing the installation of the positioning dies when manufacturing the precast PSC single slab girder installed in the curved portion.

       17 is a view showing in detail the formwork of the hinge and the formwork is installed in the hinge hinge so that the slab bottom plate cross-sectional changes of Figure 15, Figure 16 in detail.

       Figure 18 (a) is a view showing a straight and square parts and standard formwork when the continuous multi- furniture precast PSC single slab girder bridge of the present invention is installed in a square.

       Figure 18 (b) is a view showing that the removable clamp is installed to facilitate the connection and disassembly of the linear standard formwork and the square standard formwork of Figure 18 (a) with each other.

       19 is a view of inputting the elevation and coordinates of each point into a bridge installation program input to a computer in advance in order to fabricate the precast PSC single slab girder of the straight and curved portions of the continuous multi- furniture precast PSC single slab girder bridge of the present invention. Calculate the position and elevation of formwork installed at each position of the bridge by linking it to the formwork of the manufacturing site to automatically control the formwork to show the precise manufacturing of precast PSC single slab girder.

    <Description of the symbols for the main parts of the drawings>

      10; PSC composite bridge 11; PS liner

      12; Precast PSC beam 13; rotation

      14; Pier 15; Branch office

      16; Base 17; Cast-in-place reinforced concrete floor plate

      18; Branch bottom plate reinforcement 19; Parapet

      20; IPC composite bridge 21; Provisional

      22; Beam continuous PS steel wire 23; Shear connector

      30; Continuous Multi-Furniture Precast PSC Single Slab Girder Bridge

      40; Precast PSC Single Slab Girder

      41; Lower Flange Width

      42; Increased lower flange width 43; Initial abdominal height

      44; Increased abdominal height

      50; Slab tight connection 51; Primary PS Steel Wire

      52; Secondary point continuous steel 53; Fuser

      54; Single point supporting continuous structure 55; 3rd continuous and maintenance steel wire

      56; Base 57; Upper Flange Slab

      58; Home shear key 59; 3 Haunches slab bottom section

      60; Crossbeam 61; stomach

      62; Lower Flange

      70; Girder connection 71; High strength non-contraction concrete

      72; Slip clip truss rebar 73; Compressed rebar

      74; Slip clip loop rebar 75; Bending Rebar

      76; Reinforcing bars for joining 77; Formwork Steel Sheet

      78; Corner angle 79; Tensile rebar

      80; Connecting rebar slip clip loop device 85; Slab settle block

      90; Bridge steel connection continuous multi-furniture structure 91; Horizontal shear bar

      92; Lower support cover steel 93; Brackets

      94; Axial reinforcement 95; Shear Connection Stud

      96; Shear stud bolt 97; Permanent bearing

      98; Welding 99; Sol Plate

      100; Alternating Steel Connection Continuous Multi Furniture Structure

      110; Fixed and sectioned hinge dies 115; Sectional Adjustable Hinge Formwork

      120; Slab girder fixed dies

      122; Upper slab flange formwork 123; Section Adjustable Hinge

      124; support fixture

      126; Jack 127; Lower Flange Outside Formwork

      128; Abdominal form

      129; Bottom plate and upper flange side formwork

      130; Uneven type nonwoven fabric 131; Rebar

      132; angle

      140; Straight standard formwork 141; Axial direction

      142; Axial direction 143; Removable Clamp

      150; Rectangular formwork 151; Short side

      152; Slope 153; Long side

      160; Precast PSC single slab girder manufactured after formwork installation

      170; Field survey 180; Elevation and Coordinates for Each Location

      190; Computers and programs

       The present invention is to fabricate a precast PSC single slab girder in which the girder consisting of the abdomen and the lower flange to the bottom plate slab integrally with the upper flange of the girder tension-fixed primary steel wire in the workshop, and the precast PSC single slab girder After connecting the bridges between the bridges and the bridges, the bridges are connected to the girder corner angles and the steel parts are connected to the girder corner angles. The secondary continuous steel is evenly placed on the slab flange and tensioned and settled to form a mutually continuous structure system, and then the girders continued in alternating and piers as one-point supporting structures, or the girders, girders and girders and Continuous multi-family precast PSC with boundary condition of steel integral structure by installing pier or alternating steel structure In order to construct one slab girder bridge and to manufacture the precast PSC single slab girder as a standardized precast, the formwork for manufacturing the girder can be applied to a cross-sectional change position, a square change position, and a curvature change position. The hinge system and the removable clamp are introduced, and the jacks connected to the support for supporting the formwork allow the position to be adjusted according to the change of the support and the elevation. It is about how to.

        It is an object of the present invention to increase the manufacturing dedicatedness of precast PSC single slab girder with standardized formwork, and to provide the computer with the cross section, location and elevation of the bridge to have the quality required by the design while maintaining the mutually consistent slab girder connection. The precast PSC single slab girder is manufactured by inputting into the bridge installation program input in advance and calculating the cross-sectional 3D coordinates according to each bridge location and automatically controlling it by connecting to the formwork installation system of the manufacturing site. After making the girder by integrating the upper flange of the girder and supporting it with a continuous structure of one-point supporting structure by making it a continuous structure of alternating and piers or rigidly integrating the girder, girder and girders with alternating or piers Continuous multi-family precast PSC single slab girder bridge It provides a bridge installation method that can reduce the cost of manufacturing and installing the girder according to the bridge installation by applying the batch production method to make it automatically controlled by a computer by using the standard formwork to make the cross section suitable for It is.

       In the related art, as shown in FIGS. 1 and 2, the PSC beam 12 manufactured by introducing a tension force into the PS steel wire 11 is installed on the alternating 13 and the piers 14 in a simple structure system, and then reinforced concrete is formed thereon. In order to improve the driving performance by reducing the expansion joints on the point of the pier, the bottom plate made of composite girder bridge is installed on the bottom plate, and then the reinforcing bar 18 is added to the bottom plate of the point beam. PSC composite girder bridge (10) characterized in that the point bottom plate is connected by placing (17),

        Placing the bottom plate concrete 17 using the point bottom plate reinforcing bar 18 on the beam portion of the pier point and the beam is not a continuous integration of the beam and the beam, but simply connected to the bottom plate. It is a connection type structure connecting the beam and the beam, and as a result, as shown in FIG. 1, after the two beams 16 are installed in the bridge piers 15 as point parts, the beams are installed in a simple beam structure system to support each of the beams. Reinforce the concrete floor plate 19 in the upper part, and the girder 12 and the bottom plate 17 is connected to the shear connection material to the composite structure, the bottom plate of the pier point is simply reinforced only the bottom plate It is a simple structural bridge rather than a continuous bridge, so it is economical and safer because it does not reduce or redistribute the magnitude of bending moment generated in bridges installed as a continuous bridge. Difficult to establish the amount and the fulcrum portion bottom plate has a problem that the tensile crack control difficult,

       In addition, Figure 2 is the same method of the composite bridge cross section and the installation method of the bridge structure of Figure 1 and the structural system supporting the cross section without the fundamental change, and simply in the PSC beam to control somewhat the tensile crack of the bottom plate of the point on the bridge The secondary steel wire 22 was installed to bear the dead load and the live load after the synthesis, but since the upper part of the beam was simply connected without changing the structural system of FIG. 1, the reinforced concrete floor plate at the point exhibited the maximum tensile strength in the PSC beam. As the secondary steel wire arrangement, the tensile cracks mentioned in FIG. 1 cannot be avoided, thereby reinforcing the branch reinforcing bars 18 as shown in FIG. 1, and most of the problems of the conventional method of FIG. The beam 12 is manufactured by a specialized company, and the slab bottom plate 17 is a double structure that is installed by another construction company, and thus, it is difficult to construct a complete composite cross section. The results show that there are various problems due to the quality difference between each other, as well as the support of two different beams in a pier, each connecting two beams with on-site tension, which is why As a result, the elastic support 16 supporting the two beams may cause shear deformation, and thus there is a problem in structural safety and durability of changing the structural system.

       The present invention is a problem of the prior art as described above, the main body of the composite type cross-section according to the quality deterioration due to the deterioration of the load ratio and durability, the tensile tension of the bottom slab of the tension portion of the point, the tension of the secondary wire 2 Shear deformation and simple structural system of bearing support, developed to solve abdominal height rise, uneconomical cross-section and lower load capacity, without moment redistribution phenomenon.

       Precast PSC girder and cast-in-place reinforced concrete slab composite sections are precast into a single PSC slab girder to fabricate a precast PSC single slab girder structure, and the precast PSC single slab girder fabricated on the site alternately and pier Mounted on the floor and replaced with one-point support, the girders are stiffened, or the bridges and shifts and girders are completely fixed together, forming a complete continuous multi-structure structure. To provide a way to construct more stable and single factory-made high-quality and economical bridges formed by this many structural systems,

       The precast PSC single slab girder structure can be flexibly applied to the three-hundred section, the cross-sectional change, and the planar linear change position to be applied to any cross section, planar linear, oblique, and longitudinal linear in order to achieve more diversification. It is to provide a method for constructing bridges with dedicated and economical efficiency by making standard formwork with a hinge system.

        The present invention is made of a precast PSC single slab girder in which the primary steel wire is tension-fixed in the workshop by making the bottom plate slab integrally with the upper flange of the girder and the abdomen and the lower flange at the workshop, The PSC single slab girder is mounted successively between shifts and piers, and the precast PSC single slab girder is connected to the girder corner angle with the bridge parts, and the steel bars are rigidly joined using the anti-braking system. The sections between the girders are connected with high-strength cast concrete, and the secondary continuous steel is evenly placed on the slab flange and tensioned and settled, constructed in a mutually continuous structure system, and supporting one point of the girder at the shift and piers. Continuous multi- furniture precast PSC single slab having boundary condition as structure How to build a girder and the bracket,

       Forming the precast PSC single slab girder to form the precast form the hinge system formed of a three-hundred section with a hinge that can be adjusted to match the cross-sectional change, such as the cross-sectional change position, square change position, curvature change position and the like; Standardization with high dedication, economics and sanctuary for introducing flexible clamp and flexible support for cross-sectional change and planar linear change by enabling support and elevation adjustment using jacks connected to the support supporting the formwork. In order to fabricate the PSC single slab girder using the built-in formwork and to maintain the consistency and quality or uniformity required for the design of the slab girder, the three-dimensional coordinates of the interrelated positions of the slab girder are computerized. System that automatically calculates by program and automatically controls it on site To precisely produce a PSC girder single slab is characterized as to provide a method for construction of a bridge.

        Hereinafter, the configuration and operation of the present invention will be described in detail by the accompanying drawings.

       3 is a view showing the installation of a complete continuous bridge by replacing and supporting with a one-point support of the continuous multi- furniture precast PSC single slab girder bridge of the present invention, the prestress is introduced to the primary steel wire 51 to precast PSC single slab After the girder 40 is manufactured in the factory, the girder 40 is installed on the temporary support of the pier and the shift, which is the branch portion, and the girder corner angle is brushed at the connection portion between the girder 40 and the girder 40 of the branch portion. The steel plate 98 is welded and connected, and the temporary support 21 is removed while replacing it with a permanent support 97 to form a one-point continuous structure 54, and then between the girder 40 and the girder 40. After connecting the reinforcing bar of the rebar slip clip loop device 80 and pouring the non-contraction high-strength concrete 71, and then insert the secondary point PS steel wire 52 to introduce the tension force, then settled (53) Girder kite with complete girder connection Substantial continuous multi- furniture precast PSC single slab girder bridge, which is constructed to support the one-piece support structure 54 on the pier 14, which is the point portion, and to install the complete continuity bridge that connects the girder to be integrated. (30) was installed.

       In addition, when it is necessary to further secure the load-bearing rate for the member force of the bridge 30 to install a separate third continuous and maintenance steel wire (55) to tension and settle.

       4 is a view showing the rigid connection of the point portion as another embodiment of the continuous multi- furniture precast PSC single slab girder bridge of the present invention, the pre-cast PSC single slab girder 40 by introducing a prestress to the primary steel wire 51 After manufacturing, the girder 40 is installed on the bracket 93 and the shift 13 of the pier 14, and the girder and the girder which are installed in succession to the pier are interconnected while the girder is connected to the pier. Steelless welding of the corner angle 78 and the lower support cover steel plate 92, and connecting the girder reinforcement (73, 79) and pier axial reinforcement (94) with a connecting rebar slip grip loop device (80) After placing (71), the secondary point PS steel wire (52) is inserted to introduce the tension force, and then settled (53) to fully connect the pier and the girder and the girder and the girder. A continuous bridge of 90 was installed.

         In addition, when it is necessary to further secure the load-bearing rate for the member force of the bridge 30 to install a separate third continuous and maintenance steel wire (55) to tension and settle.

       As described above, the girder connecting portion 70 is installed to interconnect the girder and the girder, and the continuous bridge in which the girder connecting portion 70 and the pier 14 are integrally rigidly connected has a large magnitude of moments generated in the bridge. There is an advantage to install an economical and strong cross-section bridge to reduce the.

       FIG. 5 is a view showing the rigid connection of one side point portion and an alternate parapet portion of a girder as another embodiment of the continuous multi- furniture precast PSC single slab girder bridge according to the present invention. After the precast PSC single slab girder 40 is manufactured, the girder 40 is connected to the alternating bracket 93, and then one side end of the girder connected to the alternating bracket and the parapet section 19 are connected. Reinforced welding the corner angle 78 and the lower support cover steel plate 92 of the girder 40, connecting the girder reinforcement (73, 79) and the alternating axial reinforcement (94) rebar slip clip loop device 80 Alternately solidified the connection between the alternating and girder by inserting the secondary point PS steel wire (52), and then introducing the tension force and then inserting the tension force (53). Continuous Multi-Furniture Precast of Connection Continuous Multi-Furniture Structure 100 PSC single slab girder bridge 30 is installed.

       As described above, the continuous bridge that is rigidly connected to the parapet portion 19 of the girder 40 and the shift 13 has an indefinite number of irregular orders to install an economical and cross-sectional strong bridge that reduces the magnitude of moment generated in the bridge. There are advantages to it.

       Figure 6 (a) is a view showing the central section AA of Figures 3, 4, 5 of the present invention, the cross section is composed of a lower flange 62, the abdomen 61 and the upper flange slab 57 of the three haunch cross section. It was made possible.

       In particular, the lower cross-sectional shape of the upper flange slab is a three-hundred form (59) that allows the cross-section to be changed in three parts, and the abdominal connected haunches are fixed, and the remaining two haunches allow three-dimensional coordinate changes due to the linear change. In order to be applicable to the change of the cross section according to the linear, elevation and square, the PS steel wire (51, 55) of the central section is to be concentrated on the lower flange.

       Figure 6 (b) is a view showing a cross-section BB of the point portion of Figures 3, 4, 5 of the present invention, the cross section is the same as Figure 6 (a), but there is a difference in that the cross beam 60 is additionally arranged The secondary point PS steel wires 52 and 55 in the cross section are equally arranged in the upper flange slab.

       FIG. 7 is a view showing a slab hardening connection part 50 for tightly connecting an upper slab with the girder formed by successively installing a precast PSC single slab girder in the axial direction.

       FIG. 8 is a detailed view of the slab hardening connection of FIG. 7, wherein the girder 40 and the extension and compression reinforcing bars 73 and 79 extending from the upper and lower portions of the upper flange slab of the girder 40 are installed successively in the axial direction. And fully clipped to each other with a slip clip loop reinforcing bar 74, and horizontally bound with reinforcing reinforcing bars 76 in between, and of the reinforcing bar 76 for joining and the tension and compression reinforcing bars (79, 73) In order to reliably restrain the activity, after installing the connecting rebar slip clip loop device 80 for interconnecting the reinforcing bars 73, 79, and 76 with a plurality of slip clip truss bars 72, While installing a corner angle 78 having a “??” shape at both sides of the lower end of the installed slab, one side of the corner angle 78 is restrained and installed with the end bending bars 75 inside the girder, respectively, and the corner angle 78 Another nose installed adjacent to the galvanized steel sheet on the other side of the It is mounted on the angle 78 and is firmly installed to use as a tensile reinforcing bar and formwork 77, and then cast a high-strength non-concrete concrete 71 between the slab and the slab of the girder to form the slab steel connection portion 50. do.

       9 is a view showing in detail the one-point support continuous structure and the girder connection of Figure 3, the girder 40 and the girder 40 installed in succession on the pier 14 mounted on the temporary support, and then on the temporary support While installing corner angles 78 under both side ends of the installed girders 40, one end portion of the corner angles 78 is provided with end bending bars 75 inside the girders 50, respectively, and the corners of the corners 78 Welding 96 the sole plate 99 is attached to the bottom stud bolt 96 is attached to the lower part, and the temporary support is removed by installing the permanent support 97 in the lower portion of the permanent support is pier ( 14) to a one-point supporting continuous structure (54), and then to the end of the reinforcing bar to prevent the slip and tight reinforcement (79, 73) in the slab girder to be rigidly connected to each other at the connection between the girder. To overlap each other with a slip clip loop reinforcement (74), The reinforcing bars 73, 76, and 79 are slip clip truss 72 in order to horizontally constrain the tension and compression reinforcing bars 73 and 79 with the joint reinforcing bar 76 and to form a more complete connection structure. Constrained to make the reinforcing bar slip clip loop device 80, and then to install a high-strength non-concrete concrete so that the point connection and one point support continuous structure.

    10 is a view showing a piercing steel connection continuous multi- furniture structure for rigidly connecting the girder connection portion and the branch portion of the continuous multi- furniture precast PSC single slab girder of the present invention, the girder 40 and the girder 40 of FIG. The girder connecting portion 70 and the girder connecting portion 70 and the pier 14 is shown in detail the pier steel connection continuous multi- furniture structure 90 to the rigid connection.

The girder connection portion 70 is a tensile and compressive reinforcement (73, 79) reinforcement in the upper and lower flanges of the girder between the girder 40 and the girder 40 are installed in succession on the bracket 93 of the piers (14) Between the tension and compression reinforcement (73,79) between the installation of the reinforcing bar reinforcing clip loop device 80 as shown in Figure 9 up and down, and then the axial reinforcement 94 is installed in succession The girder is bent in the width direction over the space of the bent, the bent reinforcement portion passes between the connecting reinforcing bar slip clip loop device 80 of the tensile reinforcement (79), and the compression reinforcement (73) traverses; The shear connection studs (95) to inhibit the activity in the portion where the bridge is in contact, and the horizontal shear reinforcement (91) arranged on each girder overlap each other while the corner angle (78) manufactured at the lower end of both sides of the girder Into the end of the girder 40 at one side of the corner angle 78 After installing the bending reinforcing bar 75, the corner angle 78 while the upper portion of the pier 14 is welded to the lower support cover steel plate 92 is installed to be integrally welded, high strength to the girder connecting portion 70 By piercing non-concrete concrete 71, the girder 40 and the pier 14 by the girder connecting portion 70 and the branch connecting portion 90 are integrally rigidly connected to the bridge piercing connection continuous multi- furniture structure (90) will be.

        FIG. 11 is a view illustrating an alternate steel fastening connection continuous multi-furniture structure in which a continuous multi-furniture precast PSC single slab girder and an alternate parapet portion 19 of one side point are rigidly connected according to the present invention, and alternate with the girder 50 of FIG. (13) shows the details of the alternating steel-coupling continuous multi- furniture structure 100 for rigidly connecting the parapet portion 19 of (13).

       The alternating connection part 100 shows that the parapet part 19 and the one end of the girder 40 of the alternator 13 are integrally and rigidly connected to each other.

       After mounting the precast PSC single slab girder 40 to the shift bracket 93, the corner angle 78 to which the end bending bar 75 of the lower surface of one end of the girder 40 is attached and on the bracket 93 is mounted. After welding and stiffening with the lower support cover steel plate 92 attached thereto, the tensile and compressive rebars 73,79 and alternating axial rebars 91 extending to the girder are connected to the rebar with the same mechanism as shown in FIG. After installing the clip loop device 80, the horizontal shear reinforcement 91 is connected to the axial reinforcement 94, the shear connection stud 95 is disposed in the center of the parapet section, and then the high strength non-concrete concrete 71 ) And to install the alternating steel connection continuous multi-furniture structure (100) to allow the integral steel gilt connection with the shift.

       12 is a view showing that a groove is formed in order to install a fixing device at the end of the precast PSC single slab girder of the present invention, wherein the groove 58 is formed at the end of the girder 40 and the groove 58 is formed. In order to install the fixing device 53 in the) to secure the fixing of the steel wire while the groove portion formed at the end serves as a shear key, so that the integration is made stronger in order to improve the adhesion capacity and prevent the activity during other concrete placing.

       Figure 13 (a) (b) is a secondary point portion continuous steel wire 52 and the slab surface is disposed on the lower surface of the slab disposed on the point connection portion 70 of the continuous multi- furniture precast PSC single slab girder bridge of the present invention As a figure showing the connection to the block 85,

       (A) shows that the secondary wire portion continuous steel wire 52 passes through the upper flange slab 57, and the slab bottom fixing block 85 and the fixing device 53 are installed directly on the lower surface of the slab to install the steel wire. The connection is established,

       (B) shows the cross-section A and cross-section B of Fig. 13 (a), the cross-section A shows the position where the fixing block is installed on the cross section when the slab and the fixing device installed in the block, cross-section B is the point section Shows the use of PS steel wires installed in the slab of the upper flange.

       Figure 14 (a) (b) is a precast PSC single slab of the edge of the cross-section to increase the width of the lower flange of the point portion, or to increase the abdominal height in order to increase the resistance cross-sectional force of the precast PSC single slab girder of the present invention As the figure shows the girder, the pointed continuous slab, which is located in the area that is subjected to the tensile stress due to the characteristics of the generated moment, is placed on the upper slab and the continuous pointed steel wire is placed on the upper slab. There may be a case to move to the lower flange. For this case, the lower flange cross-section is increased by an increased lower flange width 42 extending a certain length from the width 41 of the lower lower flange as shown in FIG. Cross section to increase the abdominal height of the point section of the overall section by increasing the lower flange width or by increasing the abdominal height 44, which is increased by a certain length from the abdominal height 43 of the original girder as shown in FIG. It is to increase the resistance cross section of the girder.

       15 is a form of a fixed height to form a dedicated die for the cross-section changed according to the linear, single-gradient, elevation of the bridge when manufacturing a continuous multi- furniture precast PSC single slab girder bridge of the present invention, the cross-section change section is adjusted The figure shows the fabrication of precast PSC single slab girder by installing each hinge formwork, and the bridge causes cross-sectional change along the plane, longitudinal, single-gradient and quadrangle directions. 110) to ensure the economics only to be dedicated and standardized, for this purpose, the formwork to be composed of the slab girder fixed formwork 120 and the cross-section hinge hinge formwork 115, the slab girder fixed formwork 120 is the lower flange Some spheres connected to the abdomen of the formwork 129, the lower formwork 122 of the abdomen formwork 128 and the upper flange slab (57) In order to secure economic feasibility by greatly increasing the number of times by using a standard section for each span, and to accommodate the above-mentioned cross-sectional change and increase the degree of availability, the remaining sections of the formwork 122 are hinged by two hinges 123. ) And the support 124 to which the jack 126 is attached to adjust the stroke of the jack 126 for the cross-sectional change, and to be deformed by the two hinges 123 freely up and down according to the adjusted result. In order to form the precast PSC single slab girder 40 after the bottom plate and the upper flange side formwork 129 are installed at both ends of the upper flange 122 when the upper flange is configured. It is to be formed by pouring concrete.

       Figure 16 is to install the continuous multi- furniture precast PSC single slab girder bridge of the present invention by the formwork in the axial direction of Figure 15 by connecting the hinges at regular intervals for each segment installed in the axial direction to easily adjust the cross-sectional change As an illustration showing the installation, the upper and lower flanges forming the girder 40 and the upper flange in contact with the ventral surface, the bottom flange 122, the lower flange outer form 127 and the abdomen form 128 are installed, the upper flange If the upper flange to be installed on the lower surface die 122 to install a plurality of hinges 123 to use the hinge 123 as a node to change the form according to the change of the lower surface of the upper flange when the upper flange When the form 122 is installed and the upper flange, the lower flange outer side installed on the lower surface and the lower flange upper surface of the form 122 If the upper flange while installing a plurality of support 124 with the jack 126 attached to the upper portion of the house 127, the support 124 is moved up and down as the jack 126 operates various position variations of the die 122 While moving to the upper flange to support the die 122, while the upper flange, the bottom plate and the upper flange 121 after installing the bottom plate and the upper flange side die 129 at one end of the die 122 Fig. 15 shows a longitudinal cross-sectional view of the axial direction and forms a hinge at regular intervals for each segment in the vertical direction of the fixed and cross-sectional adjustment hinge dies 110 to facilitate adjustment by cross-sectional change along the axial direction. Freely adjust and set the change of direction short side to form concrete.

        17 is a view showing in detail the bottom plate and the upper flange side die of Figures 15 and 16, the upper flange to form a lower surface 122 in contact with the lower flange of the upper flange, the upper flange installed on the lower surface of the upper slab In order to form a plurality of hinges 123 on the lower surface die 122 so that the formwork changes according to the cross-sectional change of the precast PSC single slab girder, the upper flange is installed by using the hinge as a node, It is supported by the support 124 attached to the jack to enable the cross-section adjustment of the formwork 122, the upper flange is a hole in the bottom plate and the upper flange side formwork 129 is installed on both side ends of the formwork 122 131 is formed so as to penetrate the reinforcing bar extending from the upper flange, the inner side of the bottom plate and the upper flange side formwork 129 After installing the iron type nonwoven fabric 130, and then to form the bottom plate and the upper flange 121 to form an uneven portion in the upper flange end to form a shear key when connecting the slab of the girder and the slab of the girder later This is to be connected more strongly by the formed concave-convex portion.

        Figure 18 (a) (b) is a view showing the straight form of the formwork installed for the fabrication of the bridge and the standard formwork for each square when the continuous multi- furniture precast PSC single slab girder bridge of the present invention is installed in a square; , (A) is made of a standard fixed formwork consisting of the axial direction perpendicular 142 and the axial direction 141 of the straight standard formwork 140 for the production of precast PSC single slab girder arranged in a square, the Since the end of the girder is changed in cross-section at each position according to the square, to produce a trapezoidal quadrangular standard formwork 150 consisting of upper and lower sides (151,153) and hypotenuse 152 to produce the changed end cross-section. It is.

       (B) is the rectangular standard formwork 150 and the linear standard formwork 140, when installed to manufacture the girder 40, the rectangular standard formwork and the linear standard formwork by interconnecting with a removable clamp 143 It was installed.

        19 is a straight and curved portion of the continuous multi- furniture precast PSC single slab girder bridge and square precast PSC single slab girder of the present invention, and the elevation and coordinates of each point of the cross section to change in order to connect the girder integrally The code is given to each of the girder corresponding to the position to be interconnected by inputting the respective codes to the bridge installation program previously input to calculate the position and elevation of the formwork installed in each position of the bridge and apply it to the formwork This is a drawing showing the making of girder.

       The continuous multi- furniture precast of FIGS. 3 to 5 is manufactured by manufacturing the girder 40 using the fixed and cross-section hinge dies 110 and the linear and rectangular standard dies 140 and 150 of the method of FIGS. 15 to 18. When the PSC single slab girder bridge 30 is installed, a three-dimensional specification such as elevation and position coordinates 180 corresponding to each code given to each interconnected position of the straight and curved portions is input to the computer 150 in advance. Calculated by the bridge installation program, the result is connected to a hydraulic jack (not shown) to control the jack 126 installed in the positioning die 110 to be precisely set to the surveying 170 in the field at each position It is intended to install the formwork by operating the jack to the corresponding height.

       The present invention is to manufacture a conventional beam in the production site of pre-stressed high-strength concrete, and by placing a cast-in-place concrete slab to install a composite bridge, there is a lack of reliability of the integrated cross-section due to manufacturing differences, the construction company for each type of construction In order to drastically improve the problems such as deterioration of quality and durability and increase of air, the beam and slab are manufactured as a single PSC slab girder, which can have an economical and durable structure due to quality and homogeneity, air shortening, and shear connection materials. In the related art, in order to overcome the lack of driving due to the increase in expansion joints due to the installation of a simple beam, the bottom plate of the branch part is connected with reinforcement in the axial direction, or the girder is connected with the secondary steel wire while using the above method. It is not a bridge but is a connection type. In order to improve the economical cross-section difficulty caused by heat generation and abdominal height rise and the lack of field applicability due to the increase of abdominal bridge, the support connection of the shift and piers is supported by one point support or the girders and the above structure are strengthened. The secondary continuous steel is placed evenly on the slab of the single PSC slab girder and is constructed as a single continuous multi-furniture bridge, so that the higher economic cross-section due to the moment redistribution effect and the irregularity order are higher, so that the ductility is high. It is formed as a structural system to secure a very high safety structure, and in order to increase the integrity and continuity of the girder connecting portion and the girder alternating and pier connecting portions, the secondary continuous steel is not only equally arranged on the slab of the single girder, but also temporarily supporting the girder. The steel plate and the corner angle of the girder are fixed and welded to each other and the right angled reinforcing bar is bowed. In order to prevent the structure to be higher than the connection to ensure a high stability, in order to increase the formability of the formwork for producing the cross section of the PSC single slab girder fixed section to form a fixed die and hinges and jacks on the form change section Connected with the attached support, freeing up and down interlocking by adjusting jack stroke, standardizing by linear section and rectangular section to increase formability, making it more efficient and economical, and maintaining linearity of connection of the PSC single slab girder. It is a method of manufacturing and constructing bridges that maintain very high connection linearity by applying codes to each position of each girder and applying them to site surveys by processing three-dimensional sections such as position coordinates and elevations using computer programs.

Claims (11)

       The prestress is introduced into the primary steel wire 51 to manufacture the precast PSC single slab girder 40 at the factory, and then the girder 40 is installed on the temporary support of the piers and shifts, which are branch portions, and the girder of the branch portions is provided. At the connection between the 40 and the girder 40, the girder corner angle is forcibly welded with the sole plate 98, and the temporary support 21 is removed by replacing the permanent support 97 with one point supporting continuous structure. (54), connect the reinforcing bar between the girder 40 and the girder 40 with the connecting rebar slip clip loop device 80 and pour the high strength non-contraction concrete 71, and then the second point PS steel wire Insert 52 into the slab to introduce tension, and then settle 53 to form a girder connection 70 that is a continuation of the girder and the girder connection. Fully continuous, supported by structure 54, with girder fully integrated Precast PSC single slab girder bridge, which is a precast PSC single slab girder which is characterized by a bridge.        Prestress is introduced to the primary steel wire 51 to manufacture a precast PSC single slab girder 40, and then the girder 40 is installed on the bracket 93 and the shift 13 of the piers 14, and the piers And girder reinforcement of the girder's corner angle 78 and the lower support cover steel plate 92 and the girder reinforcement (73, 79) and the pier axial reinforcement for connection with the piers while interconnecting the girder and the girder which are installed next to each other. (94) is poured into the reinforcing bar slip grip device (80), and the non-contraction high strength concrete (71) is poured, and then the secondary point PS steel wire (52) is inserted into the slab to introduce tension and settle (53). The precast PSC single slab girder is characterized by being a continuous bridge consisting of a continuous multi-structure structure (90), where the bridge and girders, and the connection between the girders and the girders are integrally rigid. Continuous Multi-Furniture Precast PSC Single Slab Bridge.        The prestress is introduced into the primary steel wire 51 to manufacture the precast PSC single slab girder 40, and then the girder 40 is connected to the alternating bracket 93 and then connected to the alternating bracket. One side end and the parapet portion 19 of the connection is welded to the corner angle 78 and the lower support cover steel plate 92 of the girder 40, the girder reinforcement (73, 79) and alternate axial reinforcement (94) ) Into the connecting rebar slip clip loop device 80, and poured the non-contraction high strength concrete 71, and then the secondary point PS steel wire 52 is inserted into the slab to introduce a tension force and then settle (53) Precast PSC single slab girder characterized by being installed in alternating steel connection continuous multi-furniture structure 100, which is completely rigidly connected to alternating and girder connection. PSC single slab girder bridge.        The method according to claim 1 or 2,        If it is necessary to further secure the load-bearing rate for the member force of the bridge 30, the precast PSC single slab characterized in that a separate third continuous and maintenance steel wire 55 is installed to tension and settle Continuous multi-furniture precast PSC single slab girder bridge supporting girder by single point supporting structure or solid steel structure.        The method according to any one of claims 1 to 3,        The lower cross-sectional shape of the upper flange slab of the precast PSC single slab girder is fixed to the abdominal connection in the form of a three-hundition so that the section is bent in three parts, and the three two-dimensional coordinate changes according to the linear change with the other two haunches. Precast, characterized in that the central portion of the PS wires (51, 55) in the central section of the central flange, and the PS steel wires (52, 55) arranged in the point portion is evenly arranged in the slab of the upper flange PSC single slab girder bridge with continuous multi- furniture precast PSC single slab girder connected by single point supporting structure or rigid solid structure.        The method according to claim 1, wherein        The reinforcing bar slip clip loop device overlaps the ends of the reinforcing bars with slip clip loop reinforcing bars 74 in order to prevent slipping so that the tension and compression reinforcing bars 79 and 73 in the slab girder are rigidly connected to each other at the connection part between the girder. Slip reinforcing bars 73, 76, and 79 in order to achieve a more complete rigid connection structure by horizontally binding tension and compression reinforcing bars 73 and 79 with joint reinforcing bar 76 between them. A continuous multi- furniture precast PSC single slab girder bridge in which a precast PSC single slab girder characterized by being constrained by a reinforcing bar 72 is connected by a one-point support structure or a solid steel structure.        The method according to any one of claims 1 to 3,        At the end of the precast PSC single slab girder, a wedge-shaped groove portion 58 is formed, and a fixing device 53 is installed in the groove portion 58 to fix and fix the steel wire, and the groove portion 58 serves as a shear key. Multicast precast PSC single slab girder bridge that supports precast PSC single slab girder with one point support structure or rigid all-in-one structure.        The method according to any one of claims 1 to 3,        The precast PSC single slab girder is characterized in that it is a cross-sectional surface which increases the width of the lower flange of the point portion or increases the abdominal height in order to increase the resistance cross-section of the precast PSC single slab girder. Continuous multi-furniture precast PSC single slab girder bridge connected in one piece.        The method according to any one of claims 1 to 3,        Formwork for the production of the precast PSC single slab girder is a slab girder fixed formwork 128 and the upper flange if the formwork 122, the hinge hinge 115 consisting of two hinges 123 and jacks to support them. When the support 124 with the 126 is attached, the stroke of the jack 126 is adjusted for the cross-sectional change, and the upper flange is allowed to move freely to the two hinges 123 according to the adjusted result. The precast PSC single slab girder is characterized in that the bottom plate and the upper flange side formwork 129 are installed at both side ends of the formwork 122 when the upper flange is formed. Continuous multi- furniture precast PSC single slab girder bridge supported by        The method according to any one of claims 1 to 3,        When the continuous multi-furniture precast PSC single slab girder bridge is installed in a square, the straight standard formwork 140 is composed of a straight axial direction 142 and a axial direction 141 of a precast PSC single slab girder arranged in a square. A standardized fixed formwork consisting of a square standard formwork 150 and a linear standard formwork 140 each having a trapezoidal shape consisting of upper and lower sides 151 and 153 and a hypotenuse 152, and a removable clamp 143 for interconnecting the respective formwork. Precast PSC single slab girder bridge with precast PSC single slab girder characterized by one-point support structure or rigid solid structure.        The method according to any one of claims 1 to 3,        In order to connect the girder integrally to install the continuous multi- furniture precast PSC single slab girder bridge in a straight line, a curved portion and a square portion, a code corresponding to a position to be interconnected for each girder is used for elevation and coordinates of each point of the cross section. Input the respective codes to the bridge installation program previously inputted to each of them to calculate the position and elevation of the formwork installed in each position of the bridge, and adjust the position to precisely set the result to the surveying 170 in the field. Connected to the hydraulic jack (not shown) to control the jack 126 installed in the formwork 110 to operate the jacks to match the height corresponding to each position to install the formwork by installing the formwork for each bridge to install a continuous bridge Precast PSC characterized by the continuous multi-furniture precast PSC supporting single slab girder by single point structure or rigid solid structure One girder slab.

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