CN113605217B

CN113605217B - Structure of bridge abutment and roadbed joint and construction method

Info

Publication number: CN113605217B
Application number: CN202110772931.3A
Authority: CN
Inventors: 张建国; 姚辉; 张路泽; 郭佳逸; 毛衡磊
Original assignee: Tongxin Eco Environment Technology Co ltd
Current assignee: Tongxin Eco Environment Technology Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2023-03-21
Anticipated expiration: 2041-07-08
Also published as: CN113605217A

Abstract

The application relates to a structure and a construction method of a joint of a bridge abutment and a roadbed of a bridge, relating to the technical field of bridge construction; the bridge pier comprises a plurality of pier columns, bearing platforms arranged at the lower end of each pier column, a capping beam arranged at the upper end of each pier column, and a bridge abutment arranged between every two adjacent bearing platforms; the two ends of each bridge abutment are provided with extension inserting plates, the upper surface of the bearing platform is provided with a slot for each extension inserting plate to insert, and a fixing component for stably inserting the extension inserting plate into the slot is arranged at the position, close to the slot, of each bridge abutment; this application has and strengthens being connected the steadiness between abutment and the bent cap, improves the effect of bridge overall structure intensity.

Description

Structure and construction method for joint of bridge abutment and roadbed of bridge

Technical Field

The application relates to the technical field of bridge construction, in particular to a structure and a construction method of a joint of a bridge abutment and a roadbed of a bridge.

Background

The bridge is generally constructed on rivers, lakes and seas to enable vehicles, pedestrians and the like to smoothly pass through, and is suitable for the modern high-speed developed traffic industry.

A Chinese patent with a related granted publication number of CN207878252U discloses a prefabricated bridge girder, which comprises a plurality of pairs of prefabricated bridge piers which are vertically arranged, a prefabricated capping beam is erected on each pair of the prefabricated bridge piers, a prefabricated girder section is erected vertically between the adjacent prefabricated capping beams, wherein the prefabricated girder section is formed by mutually splicing a plurality of parallel panels; during construction, the prefabricated capping beams are erected on each pair of prefabricated piers, and then the prefabricated beam sections are erected among the prefabricated capping beams, so that the construction of the bridge is realized.

In view of the above related technologies, the inventor considers that the connection structure between the two adjacent precast beam segments and the precast capping beam is not stable enough, and is prone to causing the relative position of the adjacent precast bridges to shift or even crack under the influence of vibration force of an external environment, such as an earthquake, which affects the safety of the use of the bridges, and thus needs to be improved.

Disclosure of Invention

In order to improve the technical problem that the structural stability of a prefabricated bridge is poor in the related art, the application provides a structure and a construction method of a bridge abutment and roadbed joint.

The application provides a pair of bridge abutment and structure of road bed junction of bridge adopts following technical scheme:

a structure at the joint of a bridge abutment and a roadbed of a bridge comprises a plurality of pier studs, bearing platforms arranged at the lower ends of the pier studs, a capping beam arranged at the upper end of each pier stud and a bridge abutment arranged between two adjacent bearing platforms; each the abutment both ends all are provided with the extension picture peg, the bent cap upper surface is provided with and supplies each extension picture peg to insert the slot of establishing, each the abutment is close to slot department and all is provided with the fixed subassembly that is used for firmly inserting the extension picture peg and locates in the slot.

Through adopting above-mentioned technical scheme, will extend the picture peg through fixed subassembly and firmly insert and locate the slot in to reduce the condition that the abutment squinted along its length direction, realize the firm connection of abutment and bent cap, also can reduce the condition that the skew appears in adjacent abutment position simultaneously.

Optionally, each abutment tip all is provided with a plurality of extension picture peg, and adjacent abutment is the extension picture peg of near each other crisscross inserting of slot of locating, and each the lateral wall of the extension picture peg in the slot is laminated each other.

By adopting the technical scheme, the contact area of the end parts of the adjacent bridge abutments is increased, and the connection tightness between the two adjacent bridge abutments is enhanced.

Optionally, fixed subassembly includes the apron, runs through to insert and locates apron wherein the slip casting pipe of one end to and run through to insert and locate the play thick liquid pipe of the apron other end, each extend the picture peg upper surface and all seted up and supply the apron to insert the breach of stepping down of establishing, each extend the picture peg end wall and all run through and seted up the slip casting hole, inside the offering of bent cap supplies the slip casting pipe to insert the first fixed orifices of establishing to and supply the slip casting pipe to insert the second fixed orifices of establishing, first fixed orifices, second fixed orifices, slip casting hole communicate each other.

Through adopting above-mentioned technical scheme, to slip casting pipe department injection cement mortar, cement mortar flows into first fixed orifices to full all slip casting holes, finally flow to second fixed orifices, when cement mortar flows to play thick liquid pipe mouth department, can stop the injection to cement mortar, after cement mortar solidifies the shaping, extend the picture peg and firmly insert and locate in the slot.

Optionally, each it all inserts and is equipped with fender thick liquid pipe to extend the picture peg and be close to slip casting hole department, keep off the thick liquid pipe and slide along slip casting hole length direction, and adjacent keep off the thick liquid pipe end wall and laminate each other, the inside drive assembly who is used for driving each fender thick liquid pipe slippage to adjacent two extension picture peg seams that is provided with of bent cap.

Through adopting above-mentioned technical scheme, drive each fender thick liquid pipe through drive assembly and slide along slip casting hole length direction to remove to the seam crossing of two adjacent extension picture pegs, then to the downthehole grout injection of slip casting, reduce the thick liquids and spill over from the seam crossing of two adjacent extension picture pegs, spill over to the abutment surface from the seam crossing of apron and the breach of stepping down again, and then aggravate constructor's clearance burden.

Optionally, a grouting cavity and a grout outlet cavity are formed in the bridge abutment, the grouting cavity is located between the first fixing hole and the slot, and the grouting cavity is located between the slot and the second fixing hole; the driving assembly comprises a sliding pipe inserted into the grouting chamber, one end of the sliding pipe is attached to the end wall of the grout blocking pipe close to the sliding pipe, a butt joint inclined plane is arranged at the other end of the sliding pipe, and the lower end of the grouting pipe is provided with a butt joint inclined plane matched with the butt joint inclined plane.

Through adopting above-mentioned technical scheme, when the slip casting pipe inserted in the slip casting cavity, the slip casting pipe was close to the end wall of butt inclined plane department and supported the pressure slide, and the butt joint inclined plane was laminated with the butt inclined plane mutually this moment, and the slide removes and supports to promote the slip casting pipe and remove to the seam crossing of two adjacent extension picture pegs towards the direction of keeping away from the slip casting pipe.

Optionally, the sidewall of the slip casting pipe is provided with a plurality of flow-assisting through holes in a penetrating manner.

Through adopting above-mentioned technical scheme, the setting up of class of flowing-assistant through-hole can make cement mortar let in the slide pipe from first fixed orifices fast and moving to the slip casting downthehole, reduces because of slip casting pipe and slide pipe wall contact and lead to the cement thick liquids to remove slow condition, improves the efficiency of construction.

Optionally, drive assembly still includes the slider of fixed connection in slip pipe lateral wall, each fender thick liquid pipe lateral wall, drive assembly is still including welding in the spacing spring of each slider lateral wall, slip casting cavity inner wall to and the slip casting downthehole wall is all seted up and is supplied the slider to insert the spout of establishing, spacing spring fixed connection is between spout inner wall and slider lateral wall.

By adopting the technical scheme, when the limiting spring is in an initial state, the slurry blocking pipe is completely inserted into the grouting hole, the end wall of the slurry blocking pipe is flush with the end wall of the extension plug board, one end, far away from the butt joint inclined plane, of the sliding pipe is flush with the end wall of the sliding hole, one end, close to the butt joint inclined plane, of the sliding pipe is inserted into the first fixing hole, so that the sliding pipe and the slurry blocking pipe are fixed through the sliding block and the limiting spring, the slurry blocking pipe is stably inserted into the grouting hole, and the sliding pipe is stably inserted into the sliding hole.

Optionally, a support assembly is further arranged on the lower surface of each abutment, and the support assembly comprises a support frame, a triangular block arranged on the upper end surface of the support frame, and a support base arranged at the lower end of the support frame; one right-angle side of the triangular block is fixedly connected to the lower surface of the abutment, and the other right-angle side of the triangular block is attached to the side wall of the bent cap; the supporting base is fixedly connected to the upper surface of the bearing platform.

Through adopting above-mentioned technical scheme, the supporting role to the abutment can be strengthened in support assembly's setting, realizes the firm connection of abutment and cushion cap, reduces the condition that leads to the pier to weaken the support intensity of abutment because of the pier is damaged, improves bridge overall structure's stability.

Optionally, the upper surface of each bearing platform is symmetrically provided with a connecting rod, the lower surface of each supporting base is provided with a connecting groove for the connecting rod to be inserted, a capsule body containing glue is inserted into the butt-joint groove, and the side wall of the connecting rod is provided with a piercing rod for piercing the capsule body.

By adopting the technical scheme, when the abutment moves downwards and is placed between the two bearing platforms, the supporting base is placed on the upper surface of the bearing platform, the connecting rod is inserted into the connecting groove, the piercing rod pierces the capsule body, and the glue moves to the seam between the supporting base and the bearing platform, so that the fixed connection between the supporting base and the bearing platform is realized.

Optionally, a construction method adopted by a structure at a joint of a bridge abutment and a roadbed of a bridge includes the following steps:

s1, installing a bearing platform, pier columns and a cover beam according to construction requirements, hanging two bridge platforms above the bearing platform, enabling extension inserting plates on the two bridge platforms to be jointly inserted into slots, and covering a cover plate in a yielding notch;

s2, cement mortar is injected into the grouting pipe, the cement mortar flows into the slip pipe and then flows into the slurry blocking pipe, finally flows into the slurry outlet pipe through the second fixing hole, grouting is stopped when the cement is filled to the upper pipe orifice of the slurry outlet pipe, and after the cement mortar is solidified and formed, the extension inserting plate is stably inserted into the inserting groove, and connection of adjacent bridge abutments is achieved.

Through adopting above-mentioned technical scheme, realize being connected between abutment and the cushion cap through setting up extension picture peg and slot, then through the fixed position that extends the picture peg of apron, further will extend the picture peg through slip casting to the slot in after that and firmly insert and locate the slot, realize the firm connection of two adjacent abutments and cushion cap.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the extending insertion plates are stably inserted into the slots through the fixing assemblies, so that the condition that the abutment deviates along the length direction of the abutment is reduced, the abutment and the cover beam are stably connected, and the condition that the positions of adjacent abutments deviate can be reduced;

2. cement mortar is injected into the grouting pipe, the cement mortar flows into the first fixing hole and fills all the grouting holes and finally flows into the second fixing hole, when the cement mortar flows to the pipe orifice of the grout outlet pipe, the injection of the cement mortar can be stopped, and after the cement mortar is solidified and formed, the extension inserting plate is stably inserted into the inserting groove;

3. the supporting effect to the abutment can be strengthened in supporting component's setting, realizes the firm connection of abutment and cushion cap, reduces the condition that leads to the pier to weaken the support intensity of abutment because of the pier is damaged, improves bridge overall structure's stability.

Drawings

Fig. 1 is a schematic view of a structure of a bridge abutment and roadbed combination of a bridge in the embodiment.

Fig. 2 is a sectional view of a structure at a junction of an abutment and a roadbed of a bridge in an embodiment.

Fig. 3 is an enlarged schematic view of the structure of part a in fig. 2.

Fig. 4 is an exploded view of the structure used to embody the abutment-subgrade junction of a bridge in the example.

Fig. 5 is a sectional view for embodying the structure of the fixing member in the embodiment.

Description of reference numerals: 1. a bearing platform; 11. a connecting rod; 111. pricking a rod; 12. pier studs; 13. a capping beam; 131. inserting slots; 132. a first fixing hole; 135. a second fixing hole; 133. a grouting chamber; 134. a slurry outlet chamber; 14. an abutment; 141. an extension inserting plate; 1413. grouting holes; 1411. a chute; 142. a slurry blocking pipe; 143. a abdication gap; 15. a drive assembly; 151. a slide pipe; 1511. butting the inclined planes; 152. a slider; 153. a limiting spring; 2. a fixing assembly; 21. a cover plate; 22. a grouting pipe; 221. a flow-aiding through hole; 222. abutting against the inclined plane; 23. a pulp outlet pipe; 3. a support assembly; 31. a support frame; 32. a triangular block; 33. a support base; 331. connecting grooves; 332. a capsule body.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a structure at the junction of a bridge abutment and a roadbed of a bridge. Referring to fig. 1 and 2, the structure at the junction between the abutment and the roadbed of the bridge comprises a plurality of bearing platforms 1, piers 12 vertically cast on the upper surface of each bearing platform 1, capping beams 13 vertically cast on the upper surface of each pier 12, and an abutment 14 arranged between two adjacent capping beams 13; the bearing platform 1, the pier stud 12, the cover beam 13 and the abutment 14 are all prefabricated by UHPC materials.

Referring to fig. 1 and 2, each abutment 14 lower surface all is provided with supporting component 3, and supporting component 3 is including being the support frame 31 of "X" shape, integrated into one piece in the three hornblocks 32 of support frame 31 upper end to and integrated into one piece in the support base 33 of support frame 31 lower extreme, and one of them right-angle side of each three hornblocks 32 all passes through bolt fixed connection in abutment 14 lower surface, and another right-angle side laminating of three hornblocks 32 is in cushion cap 1 lateral wall.

Referring to fig. 1 and 3, the lower surface of the supporting base 33 is attached to the upper surface of the platform 1, the connecting rods 11 are integrally formed on the upper surface of the platform 1 near each supporting base 33, the lower surface of the supporting base 33 is provided with a connecting groove 331 for the connecting rods 11 to be inserted, a capsule body 332 is inserted into the connecting groove 331, and the capsule body 332 comprises glue and a plastic film for containing the glue; the sidewall of each connecting rod 11 is integrally formed with a piercing rod 111 for piercing the capsule body 332, when the supporting base 33 is attached to the upper surface of the platform 1, the connecting rod 11 is inserted into the connecting groove 331, and the piercing rod 111 pierces the capsule body 332, so that the glue flows to the joint between the supporting base 33 and the platform 1, thereby fixing the supporting base 33 and the platform 1.

Referring to fig. 4 and 5, a plurality of extension insertion plates 141 are respectively integrally formed on end walls at two ends of each bridge abutment 14, slots 131 are formed in the upper surface of the cover beam 13, the extension insertion plates 141 near two adjacent bridge abutments 14 are jointly inserted into the same slot 131, and the extension insertion plates 141 near the adjacent bridge abutments 14 are distributed in the slots 131 in a staggered manner; each end wall of the extension inserting plate 141 is provided with a grouting hole 1413 along the length direction thereof, a slurry blocking pipe 142 is inserted in a position of each extension inserting plate 141 close to the grouting hole 1413, and the end wall of the slurry blocking pipe 142 is flush with the end wall of the extension inserting plate 141.

Referring to fig. 2 and 4, a fixing assembly 2 is arranged above the extension inserting plate 141, and the fixing assembly 2 comprises a cover plate 21, a grouting pipe 22 and a grout outlet pipe 23; the upper surface of the extension inserting plate 141 is provided with a yielding notch 143 for the cover plate 21 to be inserted, and when the cover plate 21 is inserted into the yielding notch 143, the upper surface of the cover plate 21 is flush with the upper surface of the abutment 14; two ends of the cover plate 21 extend to the outside of the bridge abutment 14, the grouting pipe 22 is inserted into one end of the cover plate 21 in a penetrating manner, and the grout outlet pipe 23 is inserted into the other end of the cover plate 21 in a penetrating manner.

Referring to fig. 5, the upper surface of the bent cap 13 is provided with a first fixing hole 132 for inserting the grouting pipe 22, the upper surface of the bent cap 13 is further provided with a second fixing hole 135 for inserting the grout outlet pipe 23, and the first fixing hole 132 and the second fixing hole 135 are both arranged along the vertical direction; a grouting chamber 133 is further formed in the cover beam 13, the grouting chamber 133 is located between the first fixing hole 132 and the slot 131, and the grouting chamber 133, the first fixing hole 132 and the slot 131 are communicated; the cover beam 13 is further provided with a slurry outlet chamber 134, the slurry outlet chamber 134 is located between the slot 131 and the second fixing hole 135, and the slurry outlet chamber 134, the second fixing hole 135 and the slot 131 are communicated.

Referring to fig. 5, a driving assembly 15 is disposed inside the cover beam 13, the driving assembly 15 includes a sliding tube 151 inserted into the grouting chamber 133, a sliding block 152 fixedly welded to an outer side wall of the sliding tube 151, and an outer side wall of each grout blocking tube 142, and a limiting spring 153 welded to a side wall of each sliding block 152, a sliding slot 1411 is formed in each inner wall of the grouting chamber 133 and each inner wall of the grouting hole 1413, the sliding slot 1411 is disposed along a length direction of the grouting hole 1413, the sliding block 152 and the limiting spring 153 are inserted into the sliding slot 1411, one end of the limiting spring 153, which is far away from the sliding block 152, is fixedly adhered to the inner wall of the sliding slot 1411, when the limiting spring 153 is in an initial state, the grout blocking tube 142 is completely inserted into the grouting hole 1413, two end walls of the grout blocking tube 142 are flush with end walls of the extension insertion plate 141, one end of the sliding tube 151 is adhered to an end wall of the grout blocking tube 142, and the other end of the sliding tube 151 is inserted into the first fixing hole 132.

Referring to fig. 2 and 4, the end wall of the slide pipe 151 near the first fixing hole 132 is provided with a butt inclined surface 1511, the lower end of the grouting pipe 22 is provided with a butt inclined surface 222 attached to the butt inclined surface 1511, and the sidewall of the grouting pipe 22 near the lower end is provided with a plurality of flow assisting through holes 221 in a penetrating manner; when the grouting pipe 22 is inserted into the first fixing hole 132, the abutting inclined surface 1511 is attached to the abutting inclined surface 222, at this time, the grouting pipe 22 abuts against the sliding pipe 151, so that the sliding pipe 151 moves towards the direction close to the slot 131, the sliding pipe 151 abuts against the slurry blocking pipe 142 in contact with the sliding pipe, the limiting spring 153 deforms, all the slurry blocking pipes 142 move towards the position close to the slurry outlet chamber 134 in sequence, the slurry blocking pipes 142 move to the joint of the adjacent extension insertion plates 141, the slurry blocking pipes 142 close to the slurry outlet chamber 134 move into the slurry outlet chamber 134, and the slurry outlet pipes 23 are inserted into the second fixing holes 135.

A construction method adopted by a structure at a joint of a bridge abutment and a roadbed of a bridge comprises the following steps:

s1, installing a bearing platform 1, a pier stud 12 and a cover beam 13 according to construction requirements, hanging two bridge platforms 14 above the bearing platform 1, enabling extension inserting plates 141 on the two bridge platforms 14 to be inserted into slots 131 together, and covering a cover plate 21 in an abdicating notch 143;

s2, cement mortar is injected into the grouting pipe 22, flows into the sliding pipe 151 and then flows into the grout blocking pipe 142, finally flows into the grout outlet pipe 23 through the second fixing hole 135, grouting is stopped when cement is grouted to the upper pipe orifice of the grout outlet pipe 23, and after the cement mortar is solidified and formed, the extension inserting plate 141 is stably inserted into the inserting groove 131, so that the connection of the adjacent bridge abutment 14 is realized.

The implementation principle of the structure at the junction of the bridge abutment and the roadbed of the bridge is as follows: firstly, installing bearing platforms 1, piers 12 and a capping beam 13 according to construction requirements, then hoisting an abutment 14 between two bearing platforms 1 by using a hoisting tool, so that an extension inserting plate 141 is inserted into a slot 131, a support frame 31 is inserted between two adjacent piers 12 at the moment, and a support base 33 is fixedly adhered to the upper surface of the bearing platform 1; then, the extension inserting plate 141 on the other bridge abutment 14 is inserted into the slot 131, and at this time, the adjacent extension inserting plates 141 are inserted into the slot 131 in a staggered manner;

then, the cover plate 21 is covered in the abdicating notch 143, cement mortar is injected into the grouting pipe 22, the cement mortar flows out through the flow-aiding through hole 221 and flows into the sliding pipe 151, then flows into the grout blocking pipe 142 from the sliding pipe 151, and finally flows into the grout outlet pipe 23 through the second fixing hole 135, when the cement grout is filled to the upper nozzle of the grout outlet pipe 23, grouting is stopped, and after the cement mortar is solidified and formed, the extension inserting plate 141 is stably inserted into the inserting groove 131, so that stable connection of the adjacent bridge abutment 14 is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A structure of a joint of a bridge abutment and a roadbed of a bridge comprises a plurality of pier studs (12), bearing platforms (1) arranged at the lower end of each pier stud (12), a cover beam (13) arranged at the upper end of each pier stud (12), and bridge abutments (14) arranged between two adjacent bearing platforms (1); the method is characterized in that: extension inserting plates (141) are arranged at two ends of each bridge abutment (14), a slot (131) for each extension inserting plate (141) to insert is formed in the upper surface of each cover beam (13), and a fixing assembly (2) for stably inserting the extension inserting plate (141) into the slot (131) is arranged at a position, close to the slot (131), of each bridge abutment (14); the end part of each bridge abutment (14) is provided with a plurality of extension inserting plates (141), the extension inserting plates (141) close to each other of the adjacent bridge abutments (14) are inserted into the slots (131) in a staggered mode, the side walls of the extension inserting plates (141) in each slot (131) are attached to each other, and each fixing component (2) comprises a cover plate (21), a grouting pipe (22) inserted into one end of the cover plate (21) in a penetrating mode, and a grout outlet pipe (23) inserted into the other end of the cover plate (21) in a penetrating mode; each end wall of each extension inserting plate (141) is provided with a grouting hole (1413) in a penetrating mode, a first fixing hole (132) for inserting a grouting pipe (22) and a second fixing hole (135) for inserting a grout outlet pipe (23) are formed in the cover beam (13), and the first fixing hole (132), the second fixing hole (135) and the grouting hole (1413) are communicated with each other; each extend picture peg (141) and all insert near slip casting hole (1413) department and be equipped with fender thick liquid pipe (142), keep off thick liquid pipe (142) and slide along slip casting hole (1413) length direction, and adjacent keep off thick liquid pipe (142) end wall and laminate each other, bent cap (13) inside is provided with and is used for driving each fender thick liquid pipe (142) and slides to drive assembly (15) of adjacent two extension picture peg (141) seam departments.

2. The structure of a junction between an abutment and a roadbed of a bridge according to claim 1, wherein: each extending inserting plate (141) is provided with an abdicating notch (143) on the upper surface for the cover plate (21) to be inserted.

3. The structure of a junction between an abutment and a roadbed of a bridge according to claim 1, wherein: a grouting chamber (133) and a grout outlet chamber (134) are formed in the bridge abutment (14), the grouting chamber (133) is located between the first fixing hole (132) and the inserting groove (131), and the grouting chamber (133) is located between the inserting groove (131) and the second fixing hole (135); the driving assembly (15) comprises a sliding pipe (151) inserted into the grouting cavity (133), one end of the sliding pipe (151) is attached to the end wall of the grout blocking pipe (142) close to the sliding pipe, the other end of the sliding pipe (151) is provided with a butt joint inclined plane (1511), and the lower end of the grouting pipe (22) is provided with a butt joint inclined plane (222) matched with the butt joint inclined plane (1511).

4. The structure of a junction between an abutment and a roadbed of a bridge according to claim 1, wherein: the side wall of the grouting pipe (22) is provided with a plurality of flow-assisting through holes (221) in a penetrating manner.

5. The structure of a junction between an abutment and a roadbed of a bridge as claimed in claim 3, wherein: drive assembly (15) still include slider (152) of fixed connection in slide pipe (151) lateral wall, each fender thick liquid pipe (142) lateral wall, drive assembly (15) still including weld in spacing spring (153) of each slider (152) lateral wall, slip casting cavity (133) inner wall to and slip casting hole (1413) inner wall all offer and supply slider (152) to insert spout (1411) of establishing, spacing spring (153) fixed connection is between spout (1411) inner wall and slider (152) lateral wall.

6. The structure of a junction between an abutment and a roadbed of a bridge according to claim 1, wherein: the lower surface of each bridge abutment (14) is also provided with a support assembly (3), and each support assembly (3) comprises a support frame (31), a triangular block (32) arranged on the upper end surface of each support frame (31), and a support base (33) arranged at the lower end of each support frame (31); one right-angle side of the triangular block (32) is fixedly connected to the lower surface of the bridge abutment (14), and the other right-angle side of the triangular block (32) is attached to the side wall of the cover beam (13); the supporting base (33) is fixedly connected to the upper surface of the bearing platform (1).

7. The structure of a junction between an abutment and a roadbed of a bridge as claimed in claim 6, wherein: each bearing platform (1) is provided with a connecting rod (11) on the upper surface in a symmetrical mode, a connecting groove (331) for the connecting rod (11) to be inserted is formed in the lower surface of each supporting base (33), a capsule body (332) filled with glue is inserted into the connecting groove (331), and a piercing rod (111) for piercing the capsule body (332) is arranged on the side wall of each connecting rod (11).

8. The construction method for the structure of the junction between the abutment and the roadbed of the bridge as claimed in claim 2, comprising the steps of:

s1, installing a bearing platform (1), a pier stud (12) and a cover beam (13) according to construction requirements, hanging two bridge platforms (14) above the bearing platform (1), enabling extension inserting plates (141) on the two bridge platforms (14) to be jointly inserted into slots (131), and covering a cover plate (21) in an abdicating notch (143);

s2, cement mortar is injected into the grouting pipe (22), the cement mortar flows into the sliding pipe (151) and then flows into the grout blocking pipe (142), and finally flows into the grout outlet pipe (23) through the second fixing hole (135), grouting is stopped when the cement is fully applied to the upper pipe orifice of the grout outlet pipe (23), and after the cement mortar is solidified and formed, the extension inserting plate (141) is stably inserted into the inserting groove (131), so that connection of adjacent bridge abutments (14) is realized.