Shaping template for bridge expansion joint

Abstract

The utility model relates to the technical field of formworks, in particular to a bridge expansion joint shaping formwork which comprises a box girder, a bridge abutment and a formwork body, the bridge abutment is arranged on one side of the box girder, pavement surface layers are laid on the top of the box girder and the top of the bridge abutment, and the formwork body and an expansion joint body are arranged between the box girder and the bridge abutment. An access hole is formed in the expansion joint body; the shaping formwork for the bridge expansion joint has the beneficial effects that after the inserting plates on the two sides are pushed to the side where the formwork body is located, the formwork body is arranged between a box girder and a bridge abutment, and the formwork body is pushed downwards until the formwork body is pushed to the bottom of the inserting plates to abut against the box girder and a groove of the bridge abutment; and the pushing blocks on the inner sides of the access holes assist the connecting springs to push the inserting plates on the two sides towards the two sides through the sliding action of the connecting sliding ways and the sliding blocks, and rapid installation of the formwork body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of formwork, in particular to a fixed formwork for bridge expansion joints. Background Technique

[0002] Bridge expansion joints are provided to meet the requirements of bridge deck deformation. They are usually located between two beam ends, between the beam end and the abutment, or at the hinge position of the bridge. Their main function is to adjust the displacement and connection between the superstructures caused by vehicle loads and bridge building materials, and can effectively adjust deformation, ensure driving safety, prevent rainwater erosion, and facilitate maintenance, etc.

[0003] In the prior art, when paving the asphalt pavement at the expansion joint position, sandbags are used for notch filling, only to ensure that the paver can drive over the expansion joint.

[0004] However, the problem of depression of the asphalt pavement at the expansion joint position caused by the settlement of sandbags occurs. When cutting the expansion joint asphalt and pouring the post-cast strip concrete of the expansion joint later, there will be steps and bumping phenomena with the asphalt pavement, affecting the service life of the expansion joint device and the smoothness during driving. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fixed formwork for bridge expansion joints to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a fixed formwork for bridge expansion joints, including a box girder, an abutment and a formwork body,

[0007] One side of the box girder is provided with an abutment. Road surface layers are paved on the tops of both the box girder and the abutment. A formwork body and an expansion joint body are arranged between the box girder and the abutment. An inspection hole is opened inside the expansion joint body.

[0008] Preferably, a splicing mechanism is arranged at the bottom of the formwork body. The splicing mechanism includes a connecting slideway connected to the formwork body, and a connecting spring is installed inside the connecting slideway.

[0009] Preferably, one end of the connecting spring is connected to a sliding block. The outer side of the sliding block is slidably connected to the connecting slideway, and a pushing block is installed on the top of the sliding block.

[0010] Preferably, a plugging board is installed at the bottom of the sliding block. Plugging grooves are opened inside both the box girder and the abutment. The plugging size of the plugging board matches the size of the plugging groove.

[0011] Preferably, arc-shaped abutting rods are symmetrically installed at the bottom of the formwork body. An arc-shaped connecting block is arranged in the middle of the formwork body, and a filling layer is filled inside the arc-shaped connecting block.

[0012] Preferably, a filling block is arranged on the upper side of the filling layer, extension layers are symmetrically installed on both sides of the filling block, installation grooves are symmetrically formed inside the template body, and the outer sides of the extension layers are connected to the adjacent installation grooves.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For the fixed-type template for bridge expansion joints proposed by the present utility model, after pushing the plug-in plates on both sides towards the side where the template body is located, the template body is placed between the box girder and the abutment, and the template body is pushed downward until the bottom of the template body is in contact with the grooves of the box girder and the abutment. Then, the pushing blocks inside the inspection holes assist the connecting springs to push the plug-in plates on both sides outwards through the sliding of the connecting slideways and the sliding blocks, facilitating the rapid installation of the template body. Description of the Drawings

[0015] Figure 1 It is a schematic cross-sectional structure view of the main view of the template of the present utility model;

[0016] Figure 2 It is a schematic cross-sectional structure view of the side view of the template of the present utility model;

[0017] Figure 3 It is a schematic bottom view structure view of the template of the present utility model;

[0018] Figure 4 It is a schematic top view structure view of the template of the present utility model.

[0019] In the figure: 1, box girder; 2, abutment; 3, road surface layer; 4, template body; 401, inspection hole; 5, splicing mechanism; 501, connecting slideway; 502, sliding block; 503, pushing block; 504, plug-in plate; 505, connecting spring; 506, plug-in slot; 6, arc-shaped abutting rod; 601, arc-shaped connecting block; 602, filling layer; 603, filling block; 604, extension layer; 605, installation groove; 7, expansion joint body. Detailed Embodiments

[0020] In order to clearly and completely describe the purpose and technical solutions of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0021] Embodiment 1

[0022] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a fixed-type template for bridge expansion joints, including a box girder 1, an abutment 2, and a template body 4,

[0023] One side of the box girder 1 is provided with an abutment 2. Road surface layers 3 are laid on the tops of both the box girder 1 and the abutment 2. A template body 4 and an expansion joint body 7 are arranged between the box girder 1 and the abutment 2. A maintenance hole 401 is opened inside the expansion joint body 7. A splicing mechanism 5 is arranged at the bottom of the template body 4. The splicing mechanism 5 includes a connecting slideway 501 connected to the template body 4, and a connecting spring 505 is installed inside the connecting slideway 501;

[0024] One end of the connecting spring 505 is connected to a sliding block 502. The outer side of the sliding block 502 is slidably connected to the connecting slideway 501. A pushing block 503 is installed on the top of the sliding block 502, and a plugging plate 504 is installed at the bottom of the sliding block 502. Plugging grooves 506 are opened inside both the box girder 1 and the abutment 2. The plugging size of the plugging plate 504 matches the size of the plugging groove 506.

[0025] During specific implementation, according to Figures 1 to 4 , for the convenience of disassembly and assembly of the template, the template body 4 is installed in a clamping and limiting manner. Before installation, after pushing both sides of the plugging plate 504 towards the side where the template body 4 is located, the template body 4 is placed between the box girder 1 and the abutment 2, and the template body 4 is pushed downward until the bottom of the plugging plate 504 abuts against the grooves of the box girder 1 and the abutment 2. Then, through the pushing block 503 inside the maintenance hole 401, the connecting spring 505 is assisted to push the plugging plates 504 on both sides outwards through the sliding of the connecting slideway 501 and the sliding block 502 until the plugging plate 504 completely abuts against the plugging groove 506 on the adjacent side, and the rapid installation of the template body 4 can be completed;

[0026] When it is necessary to disassemble and replace the template body 4, push the pushing block 503 slidably connected inside the maintenance hole 401 in the opposite direction of installation until the plugging plate 504 no longer plugs into the plugging groove 506. At this time, the template body 4 can be lifted upwards to complete the disassembly of the template body 4. Among them, the maintenance hole 401 is used for regular maintenance of the template body 4, and the road surface layer 3 is used for the protection of the box girder 1 and the abutment 2, and at the same time facilitates the normal driving of vehicles. This fixed-type template for bridge expansion joints is provided with a splicing mechanism 5, which is convenient for the rapid replacement of the template body 4.

[0027] Embodiment Two

[0028] Please refer to Figure 1 , Figure 3 and Figure 4, on the basis of the first embodiment, arc-shaped abutting rods 6 are symmetrically installed at the bottom of the template body 4. An arc-shaped connecting block 601 is arranged in the middle of the template body 4. A filling layer 602 is filled inside the arc-shaped connecting block 601. A filling block 603 is arranged above the filling layer 602. Extension layers 604 are symmetrically installed on both sides of the filling block 603. Installation grooves 605 are symmetrically formed inside the template body 4. The outer side of the extension layer 604 is connected to the adjacent installation groove 605.

[0029] During specific implementation, according to Figure 1 , Figure 3 and Figure 4 , to prevent the expansion joint body 7 from excessively squeezing the template body 4 while expanding and contracting, greatly reducing the service life of the template body 4, a filling block 603 is inserted into the template body 4 through the installation groove 605 and the extension layer 604 in the middle of the template body 4, and there is a certain gap between the filling block 603 and the template body 4. Moreover, the bottom in the middle of the template body 4 is an arc-shaped connecting block 601. When the expansion joint body 7 compresses, the extrusion force will be conducted from both ends of the template body 4 to the arc-shaped connecting block 601 in the middle. At this time, the extrusion force will be gradually dispersed along the arc-shaped connecting block 601 until the middle of the template body 4 is in close contact with the filling block 603, enabling the template body 4 to effectively disperse the initial extrusion force;

[0030] A sand and gravel layer for absorbing and draining water is filled inside the arc-shaped connecting block 601, which can guide the water flow. At the same time, it has a certain looseness, is conducive to the generation of deformation, and has good resistance to the generated deformation. Among them, the arc-shaped abutting rods 6 can guide and weaken the pressure brought by the vehicles passing above, and the supporting effect is better. The template body 4 is provided with an arc-shaped connecting block 601 that can conduct pressure division and generate deformation to resist the pressure, which can effectively extend the service life of the template body 4.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge expansion joint forming template, comprising a box girder (1), an abutment (2) and a template body (4), characterized in that: A bridge abutment (2) is arranged on one side of the box girder (1), a road surface layer (3) is paved on the top of the box girder (1) and the bridge abutment (2), a formwork body (4) and an expansion joint body (7) are arranged between the box girder (1) and the bridge abutment (2), and an inspection hole (401) is opened inside the expansion joint body (7); A splicing mechanism (5) is provided at the bottom of the template body (4), and the splicing mechanism (5) includes a connecting slide (501) connected to the template body (4), and a connecting spring (505) is installed inside the connecting slide (501); One end of the connecting spring (505) is connected to the sliding block (502), the outer side of the sliding block (502) is slidably connected to the connecting slideway (501), and a pushing block (503) is installed on the top of the sliding block (502); A plug-in plate (504) is installed at the bottom of the sliding block (502), and plug-in grooves (506) are provided inside the box girder (1) and the abutment (2), and the plug-in size of the plug-in plate (504) matches the size of the plug-in groove (506).

2. A bridge expansion joint forming template according to claim 1, characterized in that: The bottom of the template body (4) is symmetrically mounted with arc-shaped abutting rods (6), the middle of the template body (4) is provided with an arc-shaped connecting block (601), and the inner side of the arc-shaped connecting block (601) is filled with a filling layer (602).

3. A bridge expansion joint forming template according to claim 2, characterized in that: A filling block (603) is arranged on the upper side of the filling layer (602), and extension layers (604) are symmetrically installed on both sides of the filling block (603). The template body (4) is symmetrically provided with installation grooves (605), and the outer side of the extension layer (604) is connected to the installation groove (605) on the adjacent side.

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