Expansion joint rear embedded pre-buried structure

Abstract

The present application relates to a post-embedded expansion joint structure, which is applied to the technical field of expansion joints of bridges, and includes a pair of reserved grooves reserved on the bridge deck, the reserved grooves are arranged along the width direction of the bridge, a gap is reserved between the two reserved grooves, and a number of fixing ribs for fixing the template are arranged in the reserved groove along its own length direction, and the length direction of the template is parallel to the length direction of the reserved groove; and also includes a cover plate for fitting the notch of the reserved groove, the cover plate is provided with a number of leveling components for fitting the bridge deck, the cover plate is provided with a number of leveling components for abutting the bottom of the reserved groove, the top wall of the cover plate is penetrated with through holes, the through holes correspond to the fixing ribs one by one, and the through holes are located above the fixing ribs, the bottom wall of the cover plate is provided with a pair of templates for forming a mold cavity with the groove wall of the reserved groove, the templates correspond to the reserved grooves one by one, and the cover plate is threadedly connected with the template. The present application has the effect of improving the construction efficiency of construction personnel.

Description

Technical Field

[0001] The present application relates to the technical field of bridge expansion joints, and in particular to a post-embedded structure of an expansion joint. Background Art

[0002] At present, in order to meet the requirements of bridge deck deformation, expansion joints are usually set between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge. The post-embedded installation process of the bridge expansion device reserves expansion joints and reserved grooves at the construction site, and uses temporary measures such as gravel to fill them to ensure the continuous construction of the bridge deck pavement or asphalt surface layer. It is a construction method for slotting and installing expansion devices after the bridge deck pavement or road surface layer construction is completed.

[0003] In the related art, during the construction of expansion joints of traditional bridges, U-shaped steel bars are tied in the reserved grooves at the construction site, and the reserved grooves are filled with gravel. After the bridge deck is fully paved, a pavement layer is formed on the bridge deck. A seam cutter is used to cut seams along the edges of the reserved grooves, and then the asphalt and gravel in the reserved grooves are chiseled out and removed, and then the expansion device is installed in the reserved grooves.

[0004] With regard to the above-mentioned related technologies, the inventors found that this construction method requires the removal of the paved asphalt pavement and the gravel in the reserved groove, and the need to protect the U-shaped steel bars fixed in the reserved groove increases the difficulty of chiseling and removing, resulting in time-consuming and labor-intensive construction, reducing the construction efficiency of the expansion joint and extending the construction period. Summary of the invention

[0005] In order to improve the construction efficiency of construction workers, the present application provides a post-embedded expansion joint structure.

[0006] The expansion joint rear embedded structure provided in this application adopts the following technical solution:

[0007] The expansion joint rear embedded structure comprises a pair of reserved grooves reserved on the bridge deck, the reserved grooves are arranged along the width direction of the bridge, a gap is reserved between the two reserved grooves, a number of fixing ribs for fixing the template are arranged in the reserved grooves along their own length direction, and the length direction of the template is parallel to the length direction of the reserved grooves;

[0008] It also includes a cover plate adapted to cover the notch of the reserved groove, the cover plate is provided with a number of leveling components for fitting the bridge deck, the cover plate is provided with a number of leveling components for abutting the bottom of the reserved groove, the top wall of the cover plate is penetrated with a through hole, the through hole corresponds to the fixed rib one by one, and the through hole is located above the fixed rib, the bottom wall of the cover plate is provided with a pair of templates for forming a mold cavity with the groove wall of the reserved groove, the template corresponds to the reserved groove one by one, and the cover plate is threadedly connected to the template;

[0009] When the leveling assembly is in contact with the bridge deck, the bottom wall of the cover plate is flush with the bridge deck.

[0010] By adopting the above technical scheme, before paving the bridge surface, the construction workers install fixing ribs in the reserved groove, then use a crane to lift the cover plate to the top of the reserved groove, then lower the cover plate, and use the leveling assembly to keep the bottom wall of the cover plate flush with the bridge deck, then place the leveling assembly against the bottom of the reserved groove so that the leveling assembly supports the cover plate, and then push the leveling assembly toward the cover plate and away from the bridge deck, thereby reducing the impact on the bridge deck paving construction. During the construction process, the cover plate can block the asphalt outside the reserved groove, and there is no need to fill the reserved groove with gravel. Therefore, after the bridge deck is paved, there is no need to chisel out the asphalt and gravel in the reserved groove. The operation is simple, which reduces the construction difficulty and construction time, improves the construction efficiency of the construction workers, and is conducive to shortening the construction period.

[0011] Optionally, the leveling assembly includes a pair of leveling plates slidably arranged toward each other, the bottom walls of the leveling plates are flush with the bottom wall of the cover plate, and the cover plate has two opposite side walls along its width direction provided with sliding grooves for the leveling plates to slide.

[0012] By adopting the above technical scheme, before paving the bridge surface, the cover plate is lifted and moved to the top of the reserved groove by a crane, and then the leveling plate is moved out of the slide and the cover plate is lowered. Since the bottom wall of the leveling plate is flush with the bottom wall of the cover plate, after the leveling plate is pressed against the bridge deck, the bottom wall of the cover plate is flush with the bridge deck, which reduces the possibility of asphalt seeping into the reserved groove due to the unevenness of the cover plate. Then the leveling component is pressed against the bottom of the reserved groove, the cover plate is supported by the leveling component, and then the leveling plate is pushed into the slide, which reduces the impact of the leveling plate on the bridge deck paving construction. When fixing the template, there is no need for construction workers to use additional measuring tools for leveling, which is conducive to further improving the construction efficiency of construction workers.

[0013] Optionally, the leveling assembly includes a plurality of screw rods, a plurality of screw holes are formed through the top end of the cover plate, the screw rods correspond to the screw holes one by one, the screw rods are inserted into the corresponding screw holes, and the screw rods are threadedly connected to the corresponding screw holes.

[0014] By adopting the above technical solution, before paving the bridge surface, the bottom wall of the cover plate is kept flush with the bridge deck through the leveling assembly, and then the screw rods are rotated in sequence so that the screw rods are against the bottom of the reserved groove, and the cover plate is supported by a number of screw rods. Then the leveling assembly can be pushed toward the cover plate and detached from the bridge deck, reducing the impact on the bridge deck paving construction, and is conducive to blocking the asphalt outside the reserved groove through the cover plate, reducing the difficulty of subsequent cleaning of the reserved groove, and is conducive to improving the construction efficiency of construction personnel.

[0015] Optionally, the two templates are located between the two mold plates, the template is slidably connected to the bottom wall of the cover plate, a rubber belt is arranged between the two templates, and the rubber belt pushes the template against the corresponding reserved groove notch, and the template is provided with a yield groove toward the side wall of the corresponding mold plate.

[0016] By adopting the above technical solution, the rubber belt pushes the template to press against the corresponding reserved groove notch, thereby reducing the gap between the template and the reserved groove, and reducing the possibility of concrete slurry leaking from the gap between the template and the reserved groove during grouting.

[0017] Optionally, a sliding hole is penetrated through the top wall of the cover plate, a sliding rod is passed through the sliding hole, one end of the sliding rod extends out of the top end of the sliding hole, and the other end extends out of the bottom end of the sliding hole and is connected to a push strip for abutting against the top wall of the rubber belt, and the push strip extends along the length direction of the cover plate.

[0018] By adopting the above technical solution, after the concrete slurry solidifies, the cover plate is lifted, and the cover plate drives the two templates upward. When the bottom of the template is flush with the clamping end of the template, the slide bar is pushed downward, and the slide bar pushes the push bar downward and pushes the rubber belt between the two templates. The rubber belt is pressed against the template. The construction workers only need to simply adjust the rubber belt to complete the installation of the rubber belt. There is no need for the construction workers to take the rubber belt and hold the rubber belt and extend it between the two templates for installation, which is beneficial to improving the construction efficiency of the construction workers.

[0019] Optionally, the bottom wall of the cover plate is provided with a plurality of limit strips for abutting against the side walls of the reserved groove, and the plurality of limit strips are evenly distributed around the periphery of the bottom wall of the cover plate.

[0020] By adopting the above technical solution, a plurality of limit strips are pressed against the groove wall of the reserved groove, thereby reducing the possibility of the cover plate being offset when paving the bridge deck.

[0021] Optionally, the limit bar is connected to a lifting rod, the lifting rod is arranged in the vertical direction, the top end of the lifting rod passes through the cover plate and is hinged with a block for overlapping the top wall of the cover plate, the bottom wall of the cover plate is provided with a plurality of receiving grooves for the limit bar to slide into, and the limit bar corresponds to the receiving grooves one by one;

[0022] When the building block overlaps the top wall of the cover plate, the limiting strip is located in the containing groove.

[0023] By adopting the above technical solution, after pulling the lifting rod to make the limit strip slide into the receiving groove, the building block is rotated so that the building block overlaps the top wall of the cover plate, which is conducive to avoiding the formation of depressions on the surface of the concrete slurry due to the limit strip squeezing.

[0024] Optionally, the through hole upper cover is provided with a sealing plate.

[0025] By adopting the above technical solution, the bridge deck is paved after the through hole is sealed with a sealing plate, which reduces the construction waste entering the reserved groove from the through hole, further reduces the difficulty of subsequent cleaning of the reserved groove, and is conducive to further improving the construction efficiency of construction personnel.

[0026] Optionally, the cover plate and the template are connected via a plurality of positioning pins, one end of the positioning pin is threadedly connected to the cover plate, and the other end of the positioning pin is threadedly connected to the template.

[0027] By adopting the above technical solution, after the template and the fixing ribs are fixed, the positioning nails are removed, and the cover plate can be directly removed by lifting after grouting, which is convenient for construction workers to install and remove the template.

[0028] Optionally, the bottom wall of the template is provided with a sealing strip for abutting against the side walls of the corresponding gap.

[0029] By adopting the above technical solution, the sealing strip of the bottom wall of the template is pressed against the side wall of the gap, thereby reducing the gap between the template and the reserved groove, and reducing the possibility of concrete slurry leaking from the gap between the template and the reserved groove during grouting.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] Before paving the bridge surface, the construction workers install fixed ribs in the reserved groove, then use a crane to lift the cover plate to the top of the reserved groove, then lower the cover plate, and use the leveling assembly to keep the bottom wall of the cover plate flush with the bridge deck. Then, the leveling assembly is pressed against the bottom of the reserved groove so that the leveling assembly supports the cover plate, and then the leveling assembly is pushed toward the cover plate and away from the bridge deck, which reduces the impact on the bridge deck paving construction. During the construction process, the cover plate can block the asphalt outside the reserved groove, and there is no need to fill the reserved groove with gravel. Therefore, after the bridge deck is paved, there is no need to chisel out the asphalt and gravel in the reserved groove. The operation is simple, which reduces the construction difficulty and construction time, improves the construction efficiency of the construction workers, and is conducive to shortening the construction period.

[0032] The rubber belt pushes the template to abut against the corresponding reserved groove, reducing the gap between the template and the reserved groove, and reducing the possibility of concrete slurry leaking from the gap between the template and the reserved groove during grouting;

[0033] After the concrete slurry solidifies, the cover plate is lifted, and the cover plate drives the two templates upward. When the bottom of the template is flush with the clamping end of the template, the slide bar is pushed downward, and the slide bar pushes the push bar downward and pushes the rubber belt between the two templates. The rubber belt is pressed against the template. The construction workers only need to simply adjust the rubber belt to complete the installation of the rubber belt. There is no need for the construction workers to take the rubber belt and hold the rubber belt and extend it between the two templates for installation, which is beneficial to improving the construction efficiency of the construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a cross-sectional view used to reflect the rear embedded structure of the expansion joint in the embodiment of the present application.

[0035] Figure 2 It is a structural schematic diagram used to reflect the cover plate, leveling assembly and leveling assembly in the embodiment of the present application.

[0036] Figure 3 It is a cross-sectional view used to reflect the post-embedded structure of the expansion joint after paving in the embodiment of the present application.

[0037] Figure 4 It is a schematic diagram of the structure of the mold plate, mold cavity, through hole and sealing plate after paving in the embodiment of the present application.

[0038] Figure 5 It is a schematic diagram of the structure after the mold cavity is poured in the embodiment of the present application.

[0039] Explanation of the reference numerals: 1. bridge; 11. reserved groove; 12. gap; 2. fixing rib; 21. compensation block; 3. cover plate; 31. through hole; 311. sealing plate; 32. template; 321. cavity; 322. rubber belt; 323. sealing strip; 33. slide groove; 34. screw hole; 35. mold plate; 36. positioning pin; 37. sliding hole; 371. sliding rod; 3711. push strip; 38. limit strip; 381. lifting rod; 3811. building block; 4. leveling assembly; 41. leveling plate; 5. leveling assembly; 51. screw; 6. paving layer. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] The embodiment of the present application discloses a rear embedded expansion joint pre-embedded structure. Figure 1 and Figure 2 The expansion joint rear embedded structure includes a pair of reserved grooves 11 reserved on the bridge deck, the reserved grooves 11 are arranged along the width direction of the bridge 1, a gap 12 is reserved between the two reserved grooves 11, and the gap 12 extends along the length direction of the reserved grooves 11. A plurality of fixing ribs 2 for fixing the template 35 are arranged in the reserved grooves 11 along their own length direction, and the length direction of the template 35 is parallel to the length direction of the reserved grooves 11. The template 35 can be made of C-shaped steel, F-shaped steel, etc. In the embodiment of the present application, the template 35 is set to C-shaped steel.

[0042] The reserved slot 11 is provided with a cover plate 3, on which a plurality of leveling components 4 are arranged. In the embodiment of the present application, the number of the leveling components 4 is set to two groups, and the two groups of leveling components 4 are evenly arranged along the length direction of the cover plate 3. A leveling component 5 is arranged on the cover plate 3.

[0043] A through hole 31 is formed through the top wall of the cover plate 3, and the through hole 31 corresponds to the fixed rib 2 one by one, and the through hole 31 is located above the fixed rib 2, which makes it convenient for construction personnel to check the fixed rib 2, weld the template 35 and the fixed rib 2, and subsequently grout the reserved groove 11.

[0044] The bottom wall of the cover plate 3 is provided with a pair of templates 32 for forming a mold cavity 321 with the groove wall of the reserved groove 11. The length direction of the template 32 is parallel to the length direction of the cover plate 3, and the template 32 corresponds to the reserved groove 11 one by one. The top wall of the template 32 fits the bottom wall of the cover plate 3, and the bottom wall of the template 32 is provided with a sealing strip 323, which is abutted against the side wall of the gap 12, reducing the gap between the template 32 and the reserved groove 11, and reducing the possibility of concrete slurry leaking from the gap between the template 32 and the reserved groove 11 during grouting.

[0045] Before paving the bridge surface, the construction workers install the fixing ribs 2 in the reserved groove 11, then use a crane to lift the cover plate 3 to the top of the reserved groove 11, then lower the cover plate 3, and use the leveling component 4 to keep the bottom wall of the cover plate 3 flush with the bridge deck, then place the leveling component 5 against the bottom of the reserved groove 11 so that the leveling component 5 supports the cover plate 3, and then push the leveling component 4 toward the cover plate 3 and away from the bridge deck, reducing the impact on the bridge deck paving construction. During the construction process, the cover plate 3 can block the asphalt outside the reserved groove 11, and there is no need to use gravel to fill the reserved groove 11. Therefore, after the bridge deck is paved, there is no need to chisel out the asphalt and gravel in the reserved groove 11. The operation is simple, which reduces the construction difficulty and construction time, improves the construction efficiency of the construction workers, and is conducive to shortening the construction period.

[0046] After the bridge deck is paved, the cover plate 3 is lifted and then lowered, and the bottom wall of the cover plate 3 is kept flush with the paving layer 6 through the leveling assembly 4. Then, the fixing ribs 2 are checked through the through holes 31, and the template 35 and the fixing ribs 2 are welded and fixed. Finally, grouting is injected into the mold cavity 321 through the through holes 31. There is no need to use measuring tools to level the template 35 before fixing the template 35, which is beneficial to further improve the construction efficiency of the construction personnel.

[0047] After the template 35 is fixed, the template 32 and the groove wall of the reserved groove 11 form a mold cavity 321. The construction workers do not need to install the template 32, which reduces the construction steps, helps to further improve the construction efficiency of the construction workers, and further shortens the construction period.

[0048] Reference Figure 1 and Figure 2The leveling assembly 4 includes a pair of leveling plates 41 that are slidably arranged toward each other. The leveling plates 41 are slidably arranged along the width direction of the cover plate 3. The cross-section of the leveling plates 41 is L-shaped. The bottom wall of the leveling plates 41 is flush with the bottom wall of the cover plate 3. The cover plate 3 has two opposite side walls along its own width direction provided with sliding grooves 33 for the leveling plates 41 to slide. When the leveling plates 41 are against the bottom of the sliding groove 33, the side of the leveling plates 41 away from the bottom of the sliding groove 33 is flush with the notch of the sliding groove 33.

[0049] Before paving the bridge surface, the cover plate 3 is lifted and moved to the top of the reserved groove 11 by a crane, and then the leveling plate 41 is moved out of the slide 33 and the cover plate 3 is lowered. Since the bottom wall of the leveling plate 41 is flush with the bottom wall of the cover plate 3, after the leveling plate 41 is against the bridge deck, the bottom wall of the cover plate 3 is flush with the bridge deck, which reduces the possibility of asphalt seeping into the reserved groove 11 due to the unevenness of the cover plate 3.

[0050] Reference Figure 1 and Figure 2 The leveling assembly 5 includes a plurality of screw rods 51. A plurality of screw holes 34 are formed through the top of the cover plate 3. The screw rods 51 correspond to the screw holes 34 one by one. In the embodiment of the present application, the number of screw rods 51 is set to four. The screw rods 51 are evenly distributed on the cover plate 3. The screw rods 51 are passed through the corresponding screw holes 34, and the screw rods 51 are threadedly connected to the corresponding screw holes 34.

[0051] Before paving the bridge surface, the bottom wall of the cover plate 3 is kept flush with the bridge deck through the leveling assembly 4, and then the screw rods 51 are rotated in sequence so that the screw rods 51 are against the bottom of the reserved groove 11, and a support effect is formed on the cover plate 3 by a number of screw rods 51. Then, the leveling plate 41 can be pushed toward the bottom of the corresponding slide groove 33 and leave the bridge deck, which reduces the impact on the bridge deck paving construction, and is conducive to blocking the asphalt outside the reserved groove 11 through the cover plate 3, reducing the difficulty of subsequent cleaning of the reserved groove 11, and is conducive to improving the construction efficiency of construction personnel.

[0052] Reference Figure 3 and Figure 4The bottom wall of the cover plate 3 is provided with a plurality of limit strips 38 for abutting against the edge of the reserved groove 11, and the limit strips 38 correspond one to one with the reserved groove 11. The limit strips 38 abut against the groove wall of the reserved groove 11, reducing the possibility of the cover plate 3 being offset when paving the bridge deck. The top wall of the limit strip 38 is integrally formed with a lifting rod 381, and the lifting rod 381 penetrates the cover plate 3 in the vertical direction. The top end of the lifting rod 381 is hinged with a block 3811 for overlapping the top wall of the cover plate 3, and the cross section of the block 3811 is L-shaped. The bottom wall of the cover plate 3 is provided with a plurality of receiving grooves for the limit strips 38 to slide into, and the limit strips 38 correspond one to one with the receiving grooves. When the block 3811 overlaps the top wall of the cover plate 3, the limit strip 38 is located in the receiving groove. After pulling the lifting rod 381 to make the limiting strip 38 slide into the receiving groove, the building block 3811 is rotated so that the building block 3811 overlaps the top wall of the cover plate 3, which helps to avoid the formation of depressions on the surface of the concrete slurry due to the limiting strip 38 squeezing.

[0053] Reference Figure 2 and Figure 4 The through hole 31 is covered with a sealing plate 311, and the sealing plate 311 is hinged to the edge of the through hole 31 on one side of the axis in the length direction of the cover plate 3. The through hole 31 is covered by the sealing plate 311 before the bridge deck is paved, which reduces the construction waste slag entering the reserved groove 11 from the through hole 31, further reduces the difficulty of subsequent cleaning of the reserved groove 11, and is conducive to further improving the construction efficiency of construction personnel. The top of the sealing plate 311 is provided with an L-shaped groove to facilitate construction personnel to open the sealing plate 311.

[0054] Reference Figure 2 and Figure 4 The mold plate 35 and the cover plate 3 are threadedly connected by a number of positioning pins 36. In the embodiment of the present application, the number of positioning pins 36 is the same as the number of through holes 31, and the positioning pins 36 correspond to the through holes 31 one by one. The bottom end of the positioning pins 36 is threaded through the cover plate 3 and is threadedly connected to the top wall of the mold plate 35 located directly below. The height difference between the mold plate 35 and the fixed rib 2 is compensated by the compensation block 21. Before welding, the surface of the steel bar needs to be rust-free to improve the installation quality. After the mold plate 35 and the fixed rib 2 are welded and fixed by the compensation block 21, the positioning pins 36 are removed. After grouting, the cover plate 3 can be directly removed by lifting, which is convenient for construction personnel to install the mold plate 35 and remove the cover plate 3.

[0055] Reference Figure 1 and Figure 2, the two templates 32 are located between the two mold plates 35, and a slide groove 33 is provided on the bottom wall of the cover plate 3, and the slide groove 33 extends along the width direction of the cover plate 3. The top wall of the template 32 is integrally formed with a slider, and the two sliders are slidably connected to the slide groove 33. The rubber belt 322 is bent into a V-shape and arranged between the two templates 32. The side wall of the template 32 facing the corresponding mold plate 35 is provided with a clearance groove for the mold plate 35 to extend into, thereby reducing the possibility of interference between the mold plate 35 and the template 32. The rubber belt 322 pushes the template 32 to press against the corresponding notch of the reserved groove 11, thereby reducing the gap between the template 32 and the reserved groove 11, and reducing the possibility of concrete slurry leaking from the gap between the template 32 and the reserved groove 11 during grouting.

[0056] Reference Figure 1 and Figure 2 The top wall of the cover plate 3 is penetrated with a sliding hole 37, and a sliding rod 371 is passed through the sliding hole 37. One end of the sliding rod 371 extends out of the top of the sliding hole 37, and the other end extends out of the bottom of the sliding hole 37 and is connected to a push-pushing strip 3711. The length direction of the push-pushing strip 3711 is parallel to the length direction of the cover plate 3. The ends of the push-pushing strip 3711 correspond to the ends of the cover plate 3 one by one, and the ends of the push-pushing strip 3711 are flush with the ends of the corresponding cover plate 3. The bottom wall of the push-pushing strip 3711 is pressed against the rubber strip.

[0057] After the concrete slurry solidifies, the cover plate 3 is lifted, and the cover plate 3 drives the two templates 32 upward. When the bottom of the template 32 is flush with the clamping end of the template 35, the slide bar 371 is pushed downward, and the slide bar 371 pushes the push strip 3711 downward and pushes the rubber belt 322 between the two templates 35. The rubber belt 322 is pressed against the template 35. The construction personnel only need to simply adjust the rubber belt 322 so that one side of the rubber belt 322 is clamped into the notch of one of the templates 35 and the other side is clamped into the notch of the other template 35. The installation of the rubber belt 322 can be completed. There is no need for the construction personnel to take the rubber belt 322 and hold the rubber belt 322 and extend it between the two templates 35 for installation, which is conducive to improving the construction efficiency of the construction personnel. The state of the rubber strip after installation is as follows Figure 5 As shown, in the embodiment of the present application, the concrete used for grouting adopts C40 grade to ensure the performance of the concrete.

[0058] The implementation principle of the post-embedded expansion joint structure of the embodiment of the present application is as follows: before paving the bridge surface, the construction personnel install the fixing ribs 2 in the reserved groove 11, then use the crane to lift the cover plate 3 to the top of the reserved groove 11, and then lower the cover plate 3, and then move the leveling plate 41 out of the slide groove 33 and lower the cover plate 3. Since the bottom wall of the leveling plate 41 is flush with the bottom wall of the cover plate 3, after the leveling plate 41 is against the bridge deck, the bottom wall of the cover plate 3 is flush with the bridge deck, which reduces the possibility of asphalt infiltration into the reserved groove 11 due to the unevenness of the cover plate 3. Then, the screw 51 is rotated in sequence to make The screw rod 51 is pressed against the bottom of the reserved groove 11, and the cover plate 3 is supported by a plurality of screw rods 51, and then the leveling assembly 4 can be pushed toward the cover plate 3 and away from the bridge deck, thereby reducing the impact on the bridge deck paving construction. During the construction process, the cover plate 3 can block the asphalt outside the reserved groove 11, and there is no need to use gravel to fill the reserved groove 11. Therefore, after the bridge deck paving is completed, there is no need to chisel out the asphalt and gravel in the reserved groove 11, which is simple to operate, reduces the construction difficulty, reduces the construction time, improves the construction efficiency of the construction personnel, and is conducive to shortening the construction period;

[0059] After the bridge deck is paved, the cover plate 3 is lifted and then lowered, and the bottom wall of the cover plate 3 is kept flush with the paving layer 6 by the leveling assembly 4. Then, the fixing ribs 2 are checked through the through holes 31, and the template 35 is fixed to the fixing ribs 2. Finally, grouting is injected into the mold cavity 321 through the through holes 31.

[0060] After the initial setting of the concrete slurry, the cover plate 3 is lifted, and the cover plate 3 drives the two templates 32 upward. When the bottom of the template 32 is flush with the clamping end of the template 35, the slide bar 371 is pushed downward, and the slide bar 371 pushes the push bar 3711 downward and pushes the rubber belt 322 to between the two templates 35. The rubber belt 322 is pressed against the template 35. The construction personnel only need to simply adjust the rubber belt 322 to complete the installation of the rubber belt 322. Finally, a layer of wet geotextile is covered on the reserved groove 11. After the concrete is finally set, water is sprinkled for curing for at least 7 days to keep it moist. Before the concrete strength reaches 90%, the bridge deck is prohibited from traffic.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rear embedded expansion joint structure, comprising a pair of reserved grooves (11) reserved on a bridge deck, wherein the reserved grooves (11) are arranged along the width direction of the bridge (1), a gap (12) is reserved between the two reserved grooves (11), a plurality of fixing ribs (2) for fixing a template (35) are arranged in the reserved grooves (11) along their own length direction, and the length direction of the template (35) is parallel to the length direction of the reserved grooves (11); Features: It also includes a cover plate (3) adapted to cover the notch of the reserved groove (11), the cover plate (3) being provided with a plurality of leveling components (4) for fitting the bridge deck, the cover plate (3) being provided with a plurality of leveling components (5) for abutting the bottom of the reserved groove (11), the top wall of the cover plate (3) being provided with a through hole (31), the through hole (31) corresponding one-to-one with the fixing rib (2), and the through hole (31) being located above the fixing rib (2), the bottom wall of the cover plate (3) being provided with a pair of templates (32) for forming a mold cavity (321) with the groove wall of the reserved groove (11), the templates (32) corresponding one-to-one with the reserved groove (11), and the cover plate (3) being threadedly connected with the mold plate (35); When the leveling assembly (4) is attached to the bridge deck, the bottom wall of the cover plate (3) is flush with the bridge deck; The leveling assembly (4) comprises a pair of leveling plates (41) slidably arranged towards each other, the bottom wall of the leveling plates (41) is flush with the bottom wall of the cover plate (3), and the cover plate (3) is provided with sliding grooves (33) on both opposite side walls along its width direction for the leveling plates (41) to slide; The leveling assembly (5) comprises a plurality of screw rods (51), a plurality of screw holes (34) are formed through the top end of the cover plate (3), the screw rods (51) correspond to the screw holes (34) one by one, the screw rods (51) are inserted into the corresponding screw holes (34), and the screw rods (51) are threadedly connected to the corresponding screw holes (34); The two templates (32) are located between the two templates (35), the templates (32) are slidably connected to the bottom wall of the cover plate (3), a rubber belt (322) is arranged between the two templates (32), and the rubber belt (322) pushes the template (32) against the corresponding notch of the reserved groove (11), and the template (32) is provided with a clearance groove facing the side wall of the corresponding template (35); A sliding hole (37) is formed through the top wall of the cover plate (3), and a sliding rod (371) is passed through the sliding hole (37). One end of the sliding rod (371) extends out of the top end of the sliding hole (37), and the other end extends out of the bottom end of the sliding hole (37) and is connected to a push strip (3711) for abutting against the top wall of the rubber belt (322). The push strip (3711) extends along the length direction of the cover plate (3).

2. The expansion joint rear embedded structure according to claim 1, characterized in that: The bottom wall of the cover plate (3) is provided with a plurality of limit strips (38) for abutting against the side walls of the reserved groove (11), and the plurality of limit strips (38) are evenly distributed around the periphery of the bottom wall of the cover plate (3).

3. The expansion joint rear embedded structure according to claim 2 is characterized in that: The limit strip (38) is connected to a lifting rod (381), the lifting rod (381) is arranged in a vertical direction, the top end of the lifting rod (381) passes through the cover plate (3) and is hinged with a block (3811) for overlapping the top wall of the cover plate (3), the bottom wall of the cover plate (3) is provided with a plurality of accommodating grooves for the limit strip (38) to slide into, and the limit strip (38) corresponds to the accommodating grooves one by one; When the building block (3811) overlaps the top wall of the cover plate (3), the limiting strip (38) is located in the receiving groove.

4. The expansion joint post-embedded structure according to claim 1, characterized in that: The through hole (31) is covered with a sealing plate (311).

5. The expansion joint post-embedded structure according to claim 1 is characterized in that: The cover plate (3) and the mold plate (35) are connected via a plurality of positioning pins (36), one end of the positioning pin (36) is threadedly connected to the cover plate (3) and the other end is threadedly connected to the mold plate (35).

6. The expansion joint post-embedded structure according to claim 1, characterized in that: The bottom wall of the template (32) is provided with a sealing strip (323) for abutting against the side wall of the corresponding gap (12).

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