A deck reinforcement structure and construction method for a concrete arch bridge

Abstract

This application relates to the technical field of road and bridge construction, and in particular to a deck reinforcement structure and construction method for a concrete arch bridge, which includes a bridge body, a mounting mechanism fixedly connected to the bridge body, and a reinforcement mechanism connected to the mounting mechanism. The bridge body includes bridge piers fixedly connected to the ground, arch ribs connected between the bridge piers, a plurality of suspenders fixedly connected to the arch ribs, a tie rod fixedly connected to the bottom of the suspenders, a plurality of steel trusses fixedly connected between the tie rods, precast slabs fixedly connected between the steel trusses, and a bridge deck laid on the upper surface of the precast slabs. One end of the reinforcement mechanism abuts against the lower surface of the precast slab, and the other end of the reinforcement mechanism is connected to the mounting mechanism. This application has the effect of improving the safety of the arch bridge.

Description

Technical Field

[0001] The present application relates to the technical field of road and bridge construction, and in particular to a deck reinforcement structure and construction method for a concrete arch bridge. Background Art

[0002] An arch bridge refers to a bridge in which an arch is the main load-bearing member in the vertical plane. The vertical load is transmitted to the abutment through the curved arch, meeting the purposes of flood discharge and navigation under the bridge in engineering.

[0003] An arch bridge includes bridge piers, arch ribs, suspenders, tie rods, steel truss girders, precast slabs, and a concrete asphalt deck laid on the upper surface of the precast slabs. Regarding the related technology described above, the inventor found that when a vehicle passes over the deck, instantaneous settlement will occur, and when the vehicle is overloaded, the instantaneous settlement may turn into permanent settlement, posing a great safety risk. Summary of the Invention

[0004] In order to improve the safety of the arch bridge, the present application provides a deck reinforcement structure and construction method for a concrete arch bridge.

[0005] A deck reinforcement structure and construction method for a concrete arch bridge provided by the present application adopt the following technical solutions:

[0006] A deck reinforcement structure for a concrete arch bridge includes a bridge body, an installation mechanism fixedly connected to the bridge body, and a reinforcement mechanism connected to the installation mechanism. The bridge body includes bridge piers fixedly connected to the ground, arch ribs connected between the bridge piers, a plurality of suspenders fixedly connected to the arch ribs, a tie rod fixedly connected to the bottom of the suspenders, a plurality of steel truss girders fixedly connected between the tie rods, precast slabs fixedly connected between the steel truss girders, and a deck laid on the upper surface of the precast slabs. One end of the reinforcement mechanism abuts against the lower surface of the precast slab, and the other end of the reinforcement mechanism is connected to the installation mechanism.

[0007] By adopting the above technical solutions, when a vehicle passes over the deck, the deck undergoes instantaneous settlement. The reinforcement mechanism disperses the instantaneous pressure received by the deck onto the installation mechanism. Also, since the installation mechanism is fixedly installed with the bridge body, the force on a certain section of the deck is borne by the entire bridge body, reducing the possibility of permanent settlement occurring when a certain section of the deck is instantaneously stressed, and improving the safety of the arch bridge.

[0008] Optionally, the reinforcement mechanism includes a support assembly fixedly connected to the surface of the installation mechanism and a contact block fixedly connected to the support assembly. The top of the contact block abuts against the lower surface of the precast slab. The top of the support assembly is fixedly connected to the lower surface of the contact block, and the bottom of the support assembly is connected to the installation mechanism.

[0009] By adopting the above technical solution, the abutting block supports the precast slab, the support assembly provides a supporting force for the abutting block, the installation mechanism provides a supporting force for the support assembly, and the abutting block conducts and disperses the instantaneous pressure received by the bridge deck to the bridge body through the installation mechanism, improving the safety of the arch bridge.

[0010] Optionally, the support assembly includes a fixing plate and a shock absorber fixedly connected to the lower surface of the fixing plate. The abutting block is fixedly connected to the upper surface of the fixing plate, and the end of the shock absorber away from the fixing plate is fixedly connected to the surface of the installation mechanism.

[0011] By adopting the above technical solution, the fixing plate provides an installation position for the abutting block and the shock absorber. When the bridge deck is subjected to an instantaneous pressure, the abutting block and the fixing plate conduct the pressure to the shock absorber, so that the shock absorber weakens the pressure and vibration, reduces the pressure on the installation mechanism, and improves the safety of the arch bridge.

[0012] Optionally, the number of the shock absorbers is multiple, and the multiple shock absorbers are evenly distributed on the lower surface of the fixing plate.

[0013] By adopting the above technical solution, the lower surface of the fixing plate is uniformly stressed, improving the connection stability of the fixing plate.

[0014] Optionally, the built-in spring of the shock absorber is always in a compressed state.

[0015] By adopting the above technical solution, the output end of the shock absorber always has a tendency to return to its original position, so that the abutting block can always abut against the surface of the precast slab, conduct the pressure received by the bridge deck at all times, and improve the safety of the arch bridge.

[0016] Optionally, the installation mechanism includes multiple installation ribs fixedly connected to the arch rib and an installation plate fixedly connected to the installation ribs. The shock absorber is fixedly connected to the surface of the installation plate.

[0017] By adopting the above technical solution, the installation of the reinforcement mechanism is realized, and the purpose of conducting the bridge deck pressure to the bridge body is realized.

[0018] Optionally, the fixing plate is slidably connected to the surface of the installation plate in a direction perpendicular to the ground.

[0019] By adopting the above technical solution, the installation plate limits the movement of the fixing plate, making the movement of the fixing plate more stable.

[0020] Optionally, a sliding groove is formed on the surface of the installation plate, the fixing plate is slidably connected to the inside of the sliding groove, and the end of the shock absorber is fixedly connected to the bottom of the sliding groove.

[0021] By adopting the above technical solution, the sliding groove realizes the limitation of the movement of the fixing plate.

[0022] Optionally, the number of the reinforcement mechanisms is multiple, and the multiple reinforcement mechanisms are evenly distributed under the bridge deck.

[0023] By adopting the above technical solution, the force on the bridge deck is made more uniform, and the reinforcement mechanism can reinforce and support multiple positions of the bridge deck, improving the safety of the arch bridge.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By providing the installation mechanism and the reinforcement mechanism to reinforce the precast slab, when instantaneous settlement occurs on the bridge deck, the force on the bridge deck is buffered, reducing the possibility of the instantaneous settlement becoming a permanent settlement and improving the safety of the arch bridge. Description of the Drawings

[0026] Figure 1 is a schematic structural view of a bridge deck reinforcement structure of a concrete arch bridge;

[0027] Figure 2 is a cross-sectional view emphasizing the connection relationship between the installation mechanism and the reinforcement mechanism;

[0028] Figure 3 is Figure 2 a partial enlarged view of part A in

[0029] Figure 4 is a partial cross-sectional view emphasizing the composition structure of the reinforcement mechanism;

[0030] Figure 5 is Figure 4 a partial enlarged view of part B in

[0031] Description of the Reference Numerals: 1, bridge body; 11, pier; 12, arch rib; 13, suspender; 14, tie rod; 15, steel truss girder; 16, precast slab; 17, bridge deck; 2, installation mechanism; 21, installation rib; 22, installation plate; 221, sliding groove; 3, reinforcement mechanism; 31, support assembly; 311, fixing plate; 312, shock absorber; 32, abutting block. Detailed Embodiment

[0032] The following further elaborates on the present application in conjunction with the attached Figures 1-5 drawings.

[0033] The embodiment of the present application discloses a bridge deck reinforcement structure and construction method for a concrete arch bridge.

[0034] Refer to Figures 1-3, A deck reinforcement structure for a concrete arch bridge, comprising a bridge body 1, a mounting mechanism 2 fixedly connected to the bridge body 1, and a reinforcement mechanism 3 connected to the mounting mechanism 2. The bridge body 1 includes bridge piers 11 fixedly connected to the ground, arch ribs 12 connected between the bridge piers 11, a plurality of suspender bars 13 fixedly connected to the arch ribs 12, a tie bar 14 fixedly connected to the bottom of the suspender bars 13, a plurality of steel trusses 15 fixedly connected between the tie bars 14, precast slabs 16 fixedly connected between the steel trusses 15, and a bridge deck 17 laid on the upper surface of the precast slabs 16. One end of the reinforcement mechanism 3 abuts against the lower surface of the precast slab 16, and the other end of the reinforcement mechanism 3 is connected to the mounting mechanism 2. When a vehicle passes over the bridge deck 17, the bridge deck 17 undergoes instantaneous settlement. The reinforcement mechanism 3 disperses the instantaneous pressure received by the bridge deck 17 onto the mounting mechanism 2. Also, since the mounting mechanism 2 is fixedly installed with the bridge body 1, the force on a certain section of the bridge deck 17 is borne by the entire bridge body 1, reducing the possibility of permanent settlement when a certain section of the bridge deck 17 is instantaneously stressed and improving the safety of the arch bridge.

[0035] Refer to Figure 4 and Figure 5 , The number of the reinforcement mechanisms 3 is multiple, and the multiple reinforcement mechanisms 3 are evenly distributed under the bridge deck 17, making the force on the bridge deck 17 more uniform. The reinforcement mechanism 3 can reinforce and support multiple positions of the bridge deck 17, improving the safety of the arch bridge.

[0036] Refer to Figure 2 and Figure 3 , The reinforcement mechanism 3 includes a support component 31 fixedly connected to the surface of the mounting mechanism 2 and a butt block 32 fixedly connected to the support component 31. The top of the butt block 32 abuts against the lower surface of the precast slab 16. The butt block 32 is located between two adjacent steel trusses 15. During construction, in order to shorten the construction period, the precast slab 16 is a concrete component made by a factory before construction, and the bridge deck 17 is formed by laying concrete asphalt. Therefore, when the reinforcement mechanism 3 reinforces the bridge deck 17, the butt block 32 needs to abut against the surface of the precast slab 16. The top of the support component 31 is fixedly connected to the lower surface of the butt block 32, and the bottom of the support component 31 is connected to the mounting mechanism 2. The support component 31 provides a supporting force for the butt block 32, and the mounting mechanism 2 provides a supporting force for the support component 31. Moreover, the butt block 32 conducts and disperses the instantaneous pressure received by the bridge deck 17 to the bridge body 1 through the mounting mechanism 2.

[0037] Refer to Figure 2 and Figure 3, the support component 31 includes a fixed plate 311 and a shock absorber 312 fixedly connected to the lower surface of the fixed plate 311. The abutting block 32 is fixedly connected to the upper surface of the fixed plate 311. One end of the shock absorber 312 away from the fixed plate 311 is fixedly connected to the surface of the installation mechanism 2. The number of shock absorbers 312 is multiple. In the embodiment of the present application, the number of shock absorbers 312 for each support component 31 is four. The four shock absorbers 312 are evenly distributed on the lower surface of the fixed plate 311. In the embodiment of the present application, the four shock absorbers 312 are respectively located at the four corner positions of the lower surface of the fixed plate 311, so that the lower surface of the fixed plate 311 is evenly stressed, and the connection stability of the fixed plate 311 is improved. The fixed plate 311 provides an installation position for the abutting block 32 and the shock absorber 312. When the bridge deck 17 is subjected to an instantaneous pressure, the abutting block 32 and the fixed plate 311 conduct the pressure to the shock absorber 312, so that the shock absorber 312 weakens the pressure and shock, reduces the pressure on the installation mechanism 2, and improves the safety of the arch bridge.

[0038] Further, the built-in spring of the shock absorber 312 itself in the present application is always in a compressed state, so that the output end of the shock absorber 312 always has a tendency to return to its original position, so that the abutting block 32 can always abut against the surface of the precast slab 16, and always conduct the pressure received by the bridge deck 17, improving the safety of the arch bridge.

[0039] Refer to Figure 4 and Figure 5 , the installation mechanism 2 includes multiple installation ribs 21 fixedly connected to the arch rib 12 and an installation plate 22 fixedly connected to the installation ribs 21. The installation ribs 21 are fixedly connected to the arch rib 12 through web members. A plurality of sliding grooves 221 are formed on the upper surface of the installation plate 22. The number of sliding grooves 221 is equal to the number of reinforcement mechanisms 3. Each sliding groove 221 internally connects a reinforcement mechanism 3.

[0040] Refer to Figure 4 and Figure 5 , the fixed plate 311 is slidably connected to the inner wall of the sliding groove 221 in a direction perpendicular to the ground, so that the sliding groove 221 provides a limit for the movement of the fixed plate 311, making the movement of the fixed plate 311 more stable. The end of the shock absorber 312 is fixedly connected to the bottom of the sliding groove 221, and the sliding groove 221 protects the shock absorber 312, improving the service life of the present application.

[0041] A construction method for the bridge deck reinforcement structure of a concrete arch bridge includes the following steps:

[0042] S1, pouring and forming the bridge pier 11 on the ground;

[0043] S2. Erect the arch ribs 12 in sections between the bridge piers 11. After one section of the arch rib 12 is erected, the suspender 13 fixedly connects the tie rod 14 and the arch rib 12. Then, fix the steel truss girder 15 between the tie rods 14. Next, lay and fix the precast slabs 16 between the steel truss girders 15. Finally, close the joint between the bridge piers 11.

[0044] S3. Connect the reinforcement mechanism 3 to the corresponding position of the mounting plate 22. Then, fixedly connect the mounting plate to the arch rib 12 through the mounting ribs 21, and make the shock absorber 312 spring in a compressed state.

[0045] S4. Lay the bridge deck 17 above the precast slab 16.

[0046] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A deck reinforcement structure for a concrete arch bridge, comprising a bridge body (1), wherein the bridge body (1) includes piers (11) fixedly connected to the ground, arch ribs (12) connected between the piers (11), a plurality of suspender bars (13) fixedly connected to the arch ribs (12), a tie rod (14) fixedly connected to the bottom of the suspender bars (13), a plurality of steel trusses (15) fixedly connected between the tie rods (14), precast slabs (16) fixedly connected between the steel trusses (15), and a bridge deck (17) laid on the upper surface of the precast slabs (16), characterized in that: The bridge deck reinforcement structure further includes a mounting mechanism (2) fixedly connected to the bridge body (1) and a reinforcement mechanism (3) connected to the mounting mechanism (2). One end of the reinforcement mechanism (3) abuts against the lower surface of the precast slab (16), and the other end of the reinforcement mechanism (3) is connected to the mounting mechanism (2). The reinforcement mechanism (3) includes a support assembly (31) fixedly connected to the surface of the mounting mechanism (2) and an abutting block (32) fixedly connected to the support assembly (31). The top of the abutting block (32) abuts against the lower surface of the precast slab (16). The top of the support assembly (31) is fixedly connected to the lower surface of the abutting block (32), and the bottom of the support assembly (31) is connected to the mounting mechanism (2). The support assembly (31) includes a fixing plate (311) and a shock absorber (312) fixedly connected to the lower surface of the fixing plate (311). The abutting block (32) is fixedly connected to the upper surface of the fixing plate (311). One end of the shock absorber (312) away from the fixing plate (311) is fixedly connected to the surface of the mounting mechanism (2). The mounting mechanism (2) includes a plurality of mounting ribs (21) fixedly connected to the arch rib (12) and a mounting plate (22) fixedly connected to the mounting ribs (21). The shock absorber (312) is fixedly connected to the surface of the mounting plate (22). The fixing plate (311) is slidably connected to the surface of the mounting plate (22) in a direction perpendicular to the ground. A sliding groove (221) is formed on the surface of the mounting plate (22), and the fixing plate (311) is slidably connected to the inside of the sliding groove (221). The end of the shock absorber (312) is fixedly connected to the bottom of the sliding groove (221).

2. The deck reinforcement structure of a concrete arch bridge according to claim 1, characterized in that: The number of the shock absorbers (312) is multiple, and the multiple shock absorbers (312) are evenly distributed on the lower surface of the fixing plate (311).

3. The deck reinforcement structure of a concrete arch bridge according to claim 1, characterized in that: The built-in spring of the shock absorber (312) itself is always in a compressed state.

4. The deck reinforcement structure of a concrete arch bridge according to claim 1, characterized in that: The number of the reinforcement mechanisms (3) is multiple, and the multiple reinforcement mechanisms (3) are evenly distributed under the bridge deck (17).

5. A construction method of a deck reinforcement structure for a concrete arch bridge, using the deck reinforcement structure for a concrete arch bridge in claim 1 above, characterized in that: It includes the following steps: Pour and form the bridge pier (11) on the ground; Erect the arch rib (12) between the bridge piers (11); Fix and connect the tie rod (14) and the arch rib (12) through the suspender (13); Fix the steel truss beam (15) between the tie rods (14); Lay the precast slab (16) above the steel truss beam (15); Lay the bridge deck (17) above the precast slab (16); Fix and connect the mounting plate (22) and the arch rib (12) through the mounting rib (21); Connect the reinforcement mechanism (3) to the mounting plate (22).

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