CN215857148U

CN215857148U - Road bridge changeover portion road surface structure

Info

Publication number: CN215857148U
Application number: CN202120577090.6U
Authority: CN
Inventors: 李明勋
Original assignee: Hebei University of Engineering
Current assignee: Hebei University of Engineering
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2022-02-18
Anticipated expiration: 2031-03-22

Abstract

The utility model provides a road bridge transition section pavement structure, which relates to the technical field of road engineering and comprises a roadbed, wherein a pavement layer is laid at the top of the roadbed close to the right side edge. The utility model comprises the following steps: the method is characterized in that a pile foundation disposal method combining the precast pile column and the concrete bridge head butt strap is adopted at the joint of a roadbed and an abutment, the precast pile column is uniformly and stepwisely provided with the anti-sinking plate on the inner wall of the foundation, so that the precast pile column and the concrete bridge head butt strap have better overall combination performance and good stress and stability, step settlement of a transition section road surface can not be generated due to damage of individual precast pile columns, the road surface structure mode has an obvious effect on disposal of bridge head jumping caused by step settlement, and the expansion and contraction spring rod is arranged at the interval between the pile column shell and the precast supporting pipe, so that the acting force of thermal expansion and cold contraction inside the roadbed can be greatly relieved, the service life of the precast pile column is prolonged, and the stability of the overall road surface structure is improved.

Description

Road bridge changeover portion road surface structure

Technical Field

The utility model relates to the technical field of road engineering, in particular to a road bridge transition section pavement structure.

Background

The bump at the bridge head is caused by the phenomenon that the vehicle jumps when passing because of the steps on the longitudinal slope of the road surface caused by differential settlement or damage of the expansion joints (approach of the bridge head) at the bridge head and the expansion joints of the road. In combination with the current research situation of road and bridge transition sections at home and abroad, the inventor finds that although various treatment methods and prevention measures are adopted at the road and bridge transition sections, the phenomenon of vehicle jumping at the bridge head still occurs during the use of the road and bridge, and the normal use and the service life of the road and bridge are influenced.

Scholars at home and abroad basically deal with the problem of the phenomenon of the bump at the bridge head by reinforcing the foundation, reducing the compression deformation of the roadbed, arranging the bridge head butt strap at the transition section and the like, but the study situation at home and abroad of the transition section of the road bridge is integrated, so that a plurality of problems are found. In order to enable a bridge and a road to be in smooth transition, a layer of concrete slab is usually laid on the lower layer of the road surface of the transition section of the bridge, but the lower part of a butt strap of the concrete slab is usually separated from filling materials due to the phenomenon that the lower part of the butt strap is hollow in the operation service process, and the concrete slab is damaged or even broken due to the action of moving vehicle-mounted impact on the road surface, so that great hidden danger is brought to the comfort and the safety of road driving.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a road and bridge transition section road surface structure which can relieve the problem of bridge head bumping caused by stepped settlement of the transition section road surface due to the damage of individual pile bodies.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a road bridge changeover portion road surface structure, includes the road bed, the top of road bed is close to right side edge and has laid the pavement layer, the top of road bed is close to intermediate position fixed mounting has concrete bridge head attachment strap, the left side fixed mounting of concrete bridge head attachment strap has the abutment, the bottom of abutment is close to intermediate position fixed mounting has the support bridge post, the bottom fixed mounting of concrete bridge head attachment strap has the precast pile post, and the precast pile post is provided with four and evenly lays in the bottom of concrete bridge head attachment strap, every group the bottom fixed mounting of precast pile post has the board of preventing sinking, the equal fixed mounting in marginal position that the top of preventing the board of sinking is close to the precast pile post has trapezoidal otic placode, the ground has been laid to the bottom of road bed, the back up coat has been laid in the left side of road bed.

Preferably, the precast pile is including the pile shell, the inner wall fixed mounting of pile shell has the harmomegathus spring beam, the one end fixed mounting that the pile shell was kept away from to the harmomegathus spring beam has the precast stay tube, the inner wall packing of precast stay tube has the concrete column.

Preferably, the precast pile columns are arranged in four groups, and the anti-sinking plates at the bottoms of the precast pile columns are arranged in a stepped manner in the inner part of the foundation.

Preferably, the front surface of the pavement layer is fixedly provided with an observation window close to the middle position.

Preferably, the precast pile columns are connected at the bottom of the roadbed in a penetrating way.

Preferably, the trapezoidal ear plates are arranged into four groups and are uniformly arranged at the edges of the periphery of the precast pile.

Preferably, the top of the roadbed, the concrete bridge head butt strap and the top of the abutment are all located on the same horizontal line.

Compared with the prior art, the pile foundation treatment method combining the precast pile column and the concrete bridge head butt strap is adopted at the joint of the roadbed and the bridge abutment, the precast pile column is uniformly and stepwisely provided with the anti-sinking plate on the inner wall of the foundation, so that the precast pile column and the concrete bridge head butt strap have better overall combination performance and good stress and stability, step settlement of a transition section road surface can not be generated due to damage of individual precast pile columns, the road surface structure mode has an obvious effect on treatment of bridge head jumping caused by step settlement, and the expansion and contraction spring rod is arranged at the interval between the pile column shell and the precast supporting pipe, so that the acting force of thermal expansion and cold contraction inside the roadbed can be greatly relieved, the service life of the precast pile column is prolonged, and the stability of the overall road surface structure is improved.

Drawings

FIG. 1 is a schematic structural diagram of a road surface structure of a bridge transition section according to the present invention;

FIG. 2 is a top view of a precast pile column in a road surface structure of a bridge transition section according to the present invention;

fig. 3 is a schematic structural diagram of a precast pile in a road surface structure of a road bridge transition section according to the present invention.

Illustration of the drawings:

1. a roadbed; 2. a pavement layer; 3. concrete bridge end butt straps; 4. an abutment; 5. supporting the bridge column; 6. prefabricating a pile; 7. an anti-trap plate; 8. a trapezoidal ear plate; 9. a foundation; 10. a reinforcement layer; 601. a pile housing; 602. a collapsible spring rod; 603. prefabricating a stay tube; 604. a concrete column.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Example, as shown in fig. 1 to 3, a road and bridge transition section pavement structure includes a roadbed 1, a pavement layer 2 is laid on the top of the roadbed 1 near the right edge, a concrete bridge head attachment plate 3 is fixedly installed on the top of the roadbed 1 near the middle position, an abutment 4 is fixedly installed on the left side of the concrete bridge head attachment plate 3, the top of the roadbed 1, the concrete bridge head attachment plate 3 and the top of the abutment 4 are all located on the same horizontal line, a supporting bridge column 5 is fixedly installed on the bottom of the abutment 4 near the middle position, a precast pile 6 is fixedly installed on the bottom of the concrete bridge head attachment plate 3, the precast pile 6 is connected through the bottom of the roadbed 1, the precast pile 6 includes a pile shell 601, a collapsible spring rod 602 is fixedly installed on the inner wall of the pile shell 601, a precast support pipe 603 is fixedly installed on the end of the collapsible spring rod 602 far from the pile shell 601, the collapsible spring rod 602 is uniformly arranged at the gap between the pile shell 601 and the precast support pipe, the inner wall packing of prefabricated brace pipe 603 has concrete column 604, and precast pile 6 is provided with four and evenly lays in the bottom of concrete pier butt strap 3, the bottom fixed mounting of every group precast pile 6 has anti-trap board 7, the equal fixed mounting of marginal position that the top of anti-trap board 7 is close to precast pile 6 has trapezoidal otic placode 8, trapezoidal otic placode 8 sets up to four group's evenly installed edges all around at precast pile 6, foundation 9 has been laid to the bottom of road bed 1, precast pile 6 sets up four groups of positions and the anti-trap board 7 of its bottom is arranged at the internal ladder of foundation 9, reinforced layer 10 has been laid in the left side of road bed 1.

The effect that its whole embodiment reached is, adopt the pile foundation processing method that precast pile 6 and concrete bridge head attachment strap 3 combined together in the junction of road bed 1 and abutment 4, precast pile 6 is even ladder nature in foundation 9 inner wall and is set up and prevent sinking the board 7, make precast pile 6 and concrete bridge head attachment strap 3 have better overall bonding performance, good atress and stability, can not produce the step settlement of changeover portion road surface because of the destruction of individual precast pile 6 like this, such road surface structural style has more obvious effect to handling the bridge head jumping car that causes because of the step settlement, and set up the spring bar 602 that contracts at the interval of pile shell 601 and precast supporting tube 603 and make the effort of the internal thermal expansion and contraction of road bed 1 can be alleviated by a wide margin, the life of precast pile 6 has been improved, the stability of whole road surface structure has been increased.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The utility model provides a road bridge changeover portion road surface structure, includes road bed (1), its characterized in that: the concrete bridge head is characterized in that a pavement layer (2) is paved at the position, close to the right edge, of the top of the roadbed (1), a concrete bridge head butt strap (3) is fixedly installed at the position, close to the middle position, of the top of the roadbed (1), a bridge abutment (4) is fixedly installed at the left side of the concrete bridge head butt strap (3), a supporting bridge column (5) is fixedly installed at the position, close to the middle position, of the bottom of the bridge abutment (4), a prefabricated pile column (6) is fixedly installed at the bottom of the concrete bridge head butt strap (3), four prefabricated pile columns (6) are uniformly paved at the bottom of the concrete bridge head butt strap (3), each group of prefabricated pile columns (6) is fixedly installed with an anti-sinking plate (7), trapezoidal lug plates (8) are fixedly installed at the positions, close to the edge positions of the prefabricated pile columns (6), of the top of the anti-sinking plate (7), and a foundation (9) is paved at the bottom of the roadbed (1), and a reinforcing layer (10) is laid on the left side of the roadbed (1).

2. The road bridge transition section pavement structure of claim 1, wherein: prefabricated pile (6) is including pile shell (601), the inner wall fixed mounting of pile shell (601) has collapsible spring beam (602), the one end fixed mounting that pile shell (601) were kept away from in collapsible spring beam (602) has prefabricated pipe (603) of propping, the inner wall packing that prefabricated prop pipe (603) has concrete column (604).

3. The road bridge transition section pavement structure of claim 1, wherein: the precast pile columns (6) are arranged in four groups, and the anti-sinking plates (7) at the bottoms of the precast pile columns are arranged in a ladder way in the inner part of the foundation (9).

4. The road bridge transition section pavement structure of claim 2, wherein: the expansion and contraction spring rods (602) are uniformly arranged at the gap between the pile column shell (601) and the prefabricated support pipe (603).

5. The road bridge transition section pavement structure of claim 1, wherein: the precast pile columns (6) are connected with the bottom of the roadbed (1) in a penetrating mode.

6. The road bridge transition section pavement structure of claim 1, wherein: the trapezoidal ear plates (8) are arranged into four groups and are uniformly arranged at the edges of the periphery of the precast pile column (6).

7. The road bridge transition section pavement structure of claim 1, wherein: the top of the roadbed (1) and the tops of the concrete bridge head butt strap (3) and the abutment (4) are all located on the same horizontal line.