Stretchable structure of road bridge

Abstract

The utility model relates to a road and bridge telescopic structure, and relates to the technical field of expansion joints, the road and bridge telescopic structure comprises two oppositely arranged building structural plates and a water stop piece arranged between the two building structural plates, each building structural plate comprises a fixed connecting plate and a reinforcing rib fixedly connected with the fixed connecting plate, the reinforcing ribs are fixedly embedded in the bridge abutment, the sides, close to each other, of the two fixed connecting plates are arranged in an arc shape, the sides, close to each other, of the two connecting plates are consistent in radian and meshed with each other, and positioning assemblies used for positioning the two fixed connecting plates are further arranged on the two building structural plates. The method has the advantages that the driving experience of related drivers can be improved conveniently, and the phenomenon of vehicle bumping on the bridge floor is reduced.

Description

Technical Field

[0001] This application relates to the technical field of expansion joints, and in particular to an expansion structure for road bridges. Background Technology

[0002] Bridge expansion joints are structures installed between two beam ends, between a beam end and an abutment, or at the hinged joints of a bridge to meet the requirements of bridge deck deformation. Expansion joints are required to be able to expand and contract freely and reliably. When vehicles pass over them, they should be smooth without sudden jumps or noise. They should also be able to prevent rainwater and garbage from seeping in and causing blockages. Installation, inspection, and maintenance should be simple and convenient.

[0003] A Chinese patent document with publication number CN119914009A discloses a building waterproof expansion joint, comprising a waterstop, a central plate, and two building components. The two building components are arranged side-by-side in a horizontal direction to form an expansion joint, with the distribution direction of the two building components referred to as the first direction. The waterstop is fixedly installed between the two building components and located within the expansion joint. Each building component is fixedly equipped with a support seat, and the central plate is positioned between the two support seats and slides with them. Each support seat is fixedly equipped with an upper cover plate. The cover plate and the center plate slide and seal; two support seats define a first chamber between themselves and the center plate; each of the two first chambers is provided with a first one-way valve, which allows only external gas to enter the first chamber; the center plate defines a second chamber between itself and the support seats and the upper cover plate located on the same side in the first direction; a second one-way valve is provided between the second chamber and the first chamber located on the same side in the first direction; the second one-way valve allows only gas in the first chamber to enter the second chamber; a third chamber is defined between the two support seats, the center plate and the waterstop.

[0004] Since the expansion joint in the aforementioned technologies extends parallel to the width of the road surface, when a vehicle drives over the expansion joint, the elastic deformation generated by the expansion joint when both front wheels of the vehicle simultaneously run over the expansion joint can easily cause the vehicle to feel bumpy, affecting the driver's driving experience. When a vehicle drives over the expansion joint, it is easy to experience bouncing and unevenness, creating safety hazards. Therefore, improvements are needed. Utility Model Content

[0005] To improve the driving experience for drivers and reduce the occurrence of bridge deck bouncing, this application provides a road bridge expansion joint structure.

[0006] The technical solution for a road and bridge expansion joint provided in this application is as follows:

[0007] A road bridge expansion joint includes two opposing building panels and a waterstop between the two building panels. Each building panel includes a fixed connecting plate and a reinforcing rib fixedly connected to the fixed connecting plate. The reinforcing rib is fixedly embedded in the bridge abutment. The two fixed connecting plates are arranged in an arc shape on the side that is close to each other. The arc of the side that is close to each other is consistent and interlocks with each other. The two building panels are also provided with positioning components for positioning the two fixed connecting plates.

[0008] The positioning component includes ear plates fixed to the connecting plate. Each connecting plate has two ear plates, which are located at both ends of the connecting plate. The length of one ear plate is longer than the length of the other ear plate. When the two connecting plates are aligned, the longer ear plate on the connecting plate corresponds to the corresponding segment ear plate on the other connecting plate.

[0009] Each ear plate is provided with a first fixing hole, and both ends of the connecting plate are provided with fixing plates. Each fixing plate has two positioning holes, one of which corresponds to one of the first fixing holes and the other of which corresponds to the other first fixing hole. The positioning hole corresponding to the long ear plate is an oblong hole. The fixing plate is also provided with a fixing rod, which is arranged to move through the first fixing hole and the positioning hole in sequence. One end of the fixing rod through the positioning hole is embedded and fixed in the bridge abutment. The end of the fixing rod away from the bridge abutment is threaded with a fixing nut. The fixing nut is movably fitted and pressed against the side of the ear plate away from the fixing plate.

[0010] By adopting the above technical solution and setting up arc-shaped connecting plates, a certain amount of flexible deformation is provided for the expansion joint. At the same time, the front wheels of the vehicle are less likely to run over the expansion joint simultaneously during vehicle operation, thus reducing the likelihood of the vehicle bouncing and improving driving comfort and safety.

[0011] Meanwhile, the connection strength between the bridge abutment and the connecting plate is improved by the reinforcing ribs of the fixed connection. At the same time, by setting the ear plates, when the relevant construction personnel are installing the expansion joint, the relevant construction personnel first fix the fixed plate to the two ear plates, and fix the ear plates and the fixed plate by fixing the fixed rods. The fixing is nailed into the bridge abutment by anchoring, and the fixing nut is screwed in to make the fixing nut press against the ear plate, thereby achieving stable fixing between the ear plate and the fixed plate.

[0012] By creating a positioning hole in the form of an oblong shape, when a vehicle drives the bridge to undergo minor deformation, the oblong shape provides a gap for the bridge to undergo minor deformation, thereby reducing bridge fatigue caused by rigid deformation.

[0013] Optionally, a fixing groove is provided on the side of each of the two connecting plates that is far apart from each other. The water-stopping component includes a first water-stopping strip. One side of the first water-stopping strip is embedded in the fixing groove, and the other side of the first water-stopping strip is embedded in the fixing groove on another connecting plate. The first water-stopping strip is arranged to cover the gap between the two connecting plates.

[0014] By adopting the above technical solution, the first waterstop is installed to cover the expansion joints, reducing the ground settlement caused by rainwater seeping through the expansion joints or into the bridge abutment or foundation during rainy weather, thereby improving the stability of the expansion joints.

[0015] By embedding the first waterstop in the fixing groove, the first waterstop is not easy to fall off from the connecting plate, thus achieving stable waterproofing of the expansion joint.

[0016] Optionally, the first waterstop is a rubber waterstop.

[0017] By adopting the above technical solution, the first waterstop is set as a rubber waterstop, so that the rubber waterstop can always stably cover and stop the water in the expansion joint when the expansion joint undergoes slight deformation.

[0018] Optionally, the space between the two connecting plates is filled with an elastic filler, which is one of the following: sealant, asphalt, concrete, or EVA foam.

[0019] By adopting the above technical solutions, the filling material is used to balance the structural deformation and sealing protection of the expansion joint, ensuring the safe and durable operation of the project under dynamic loads and environmental changes.

[0020] Optionally, the waterstop further includes a second waterstop strip disposed on the bottom side of the connecting plate. The second waterstop strip is W-shaped along the extension direction of the bridge abutment and is arranged along the width direction of the bridge abutment. The second waterstop strip is a stainless steel waterstop strip.

[0021] By adopting the above technical solution, the second waterstop further waterproofs the bottom side of the connecting plate. At this time, the W-shaped second waterstop reduces water concentration and reduces water dripping from the bottom side of the expansion joint or seeping into the bridge abutment foundation. Moreover, the W shape allows the second waterstop to undergo slight deformation when the expansion joint undergoes slight deformation, thereby providing a certain elastic recovery force when the expansion joint undergoes slight deformation and providing stable waterproofing for the expansion joint.

[0022] Optionally, a locking plate is fixedly connected to the second waterstop, and a limiting hole corresponding to the positioning hole is provided on the locking plate. The limiting hole is also waist-shaped, and the fixing rod is arranged through the limiting hole.

[0023] By adopting the above technical solution, the locking plate and the fixing plate are fixed through the limiting hole, thereby fixing and limiting the waterstop, and achieving stable waterproofing when the expansion joint deforms.

[0024] Optionally, the connecting plate is further provided with a shock-absorbing component for damping the two connecting plates. The shock-absorbing component includes a locking plate fixed to the bottom of the connecting plate. The locking plate has a locking hole and a locking rod. The locking rod passes through the two locking plates in sequence, and the diameter of both ends of the locking rod is larger than that of the locking hole. A shock-absorbing spring is fixedly connected to the end of the locking rod, and the shock-absorbing spring is fixedly connected to the locking plate.

[0025] By adopting the above technical solution, the locking rod and shock-absorbing spring provide a certain elastic restoring force to the two connecting plates when the expansion joint undergoes slight deformation, thereby reducing the rigid deformation of the expansion joint.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting up arc-shaped connecting plates, a certain amount of flexible deformation is provided for the expansion joint. At the same time, the front wheels of the vehicle are less likely to run over the expansion joint simultaneously during vehicle operation, thus reducing the likelihood of the vehicle bouncing and improving driving comfort and safety.

[0028] 2. By using locking plates, locking rods, and shock-absorbing springs, a certain elastic restoring force is provided to the two connecting plates when the expansion joint undergoes slight deformation, thereby reducing the rigid deformation of the expansion joint;

[0029] 3. By setting the first and second waterstops, the expansion joints are stabilized and waterproofed when they undergo minor deformation. This not only reduces the entry of foreign objects into the expansion joints and improves their ability to withstand minor deformations, but also reduces the problems of foundation settlement and water seepage under the bridge caused by water seeping into the abutments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the expansion joint structure of a road bridge from another perspective;

[0032] Figure 3 This is a schematic diagram of the connection structure between the positioning component and the water-stopping component.

[0033] Reference numerals: 1. Bridge abutment; 11. Connecting plate; 12. Reinforcing rib; 2. Positioning assembly; 21. Ear plate; 22. Positioning hole; 23. First fixing hole; 24. Fixing rod; 25. Fixing nut; 3. Water stop component; 31. First water stop strip; 32. Second water stop strip; 33. Fixing groove; 34. Locking block; 35. Limiting hole; 36. Shock absorber component; 361. Locking plate; 362. Locking rod; 363. Shock absorber spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0035] This application discloses a road and bridge expansion joint structure. (Refer to...) Figure 1 A road bridge expansion joint includes two opposing building slabs and a waterstop 3 located between the two building slabs. Each building slab includes a connecting plate 11 and a reinforcing rib 12 fixedly connected to the connecting plate 11. The reinforcing rib 12 is fixedly embedded in the abutment 1. One end of the reinforcing rib 12 is fixedly welded to the side of the connecting plate 11 away from the other connecting plate 11. The reinforcing rib 12 is annular. Multiple reinforcing ribs 12 are fixedly welded on each connecting plate 11. The multiple reinforcing ribs 12 are evenly spaced along the width direction of the abutment 1. The lengths of the reinforcing ribs 12 are different. The ends of the multiple reinforcing ribs 12 away from the connecting plate 11 are flush. The sides of the two connecting plates 11 that are close to each other are arranged in an arc shape. The arcs of the sides of the two connecting plates 11 that are close to each other are consistent and interlocked. The two building slabs are also provided with positioning components 2 for positioning the two fixed connecting plates 11. The sides of the two connecting plates 11 that are close to each other are S-shaped and the two connecting plates 11 are movably interlocked.

[0036] Reference Figure 1 and Figure 2 The positioning component 2 includes ear plates 21 fixedly welded to the connecting plate 11. Each connecting plate 11 has two ear plates 21, which are located at both ends of the connecting plate 11. The ear plates 21 on the two connecting plates 11 are of different lengths. The two ear plates 21 on one connecting plate 11 are long ear plates 21, and the two ear plates 21 on the other connecting plate 11 are short ear plates 21. When the two connecting plates 11 are aligned, the long ear plate 21 on the connecting plate 11 corresponds to the corresponding short ear plate 21 on the other connecting plate 11.

[0037] Each ear plate 21 is provided with a first fixing hole 23. Both ends of the connecting plate 11 are provided with fixing plates. The fixing plates are provided with two positioning holes 22. One positioning hole 22 corresponds to one first fixing hole 23, and the other positioning hole 22 corresponds to the other first fixing hole 23. The positioning hole 22 corresponding to the long ear plate 21 is an oblong hole. The fixing plate is also provided with a fixing rod 24. The fixing rod 24 is arranged to move through the first fixing hole 23 and the positioning hole 22 in sequence. One end of the fixing rod 24 through the positioning hole 22 is embedded and fixed in the bridge abutment 1. The end of the fixing rod 24 away from the bridge abutment 1 is threaded with a fixing nut 25. The fixing nut 25 is movable and fits tightly against the side of the ear plate 21 away from the fixing plate.

[0038] When relevant technicians install expansion joints, they first embed the connecting plate 11 and the reinforcing rib 12 into the bridge abutment 1 or the joint of two bridges. The reinforcing rib 12 is then installed by passing through steel bars and binding with steel wires before concrete is laid. Then, the ear plates 21 fixed to the two connecting plates 11 are joined together so that the first fixing hole 23 on the ear plate 21 corresponds to the positioning hole 22 on one side of the fixing plate. The first fixing hole 23 on the other ear plate 21 corresponds to the positioning hole 22 on the other side of the fixing plate. The fixing rod 24 is then nailed into the bridge abutment 1 in the form of an anchor. The end of the fixing rod 24 away from the bridge abutment 1 is provided with an external thread, and the free end of the fixing rod 24 is threaded with a fixing nut 25. The fixing nut 25 is tightened against the side of the ear plate 21 away from the fixing plate.

[0039] Meanwhile, in order to achieve waterproof protection for the expansion joint, an elastic filler is filled between the two expansion joints. The filler is one of the following: sealant, asphalt, concrete, and EVA foam. In order to better achieve waterproof protection for the expansion joint, the waterstop 3 includes a first waterstop 31 covering the two connecting plates 11. The first waterstop 31 is a rubber waterstop. A fixing groove 33 is opened on the side of the two connecting plates 11 that is far away from each other. The width of the opening side of the fixing groove 33 is narrower than the width inside the fixing groove 33, and the first waterstop 31 is embedded in the fixing groove 33.

[0040] The first waterstop 31 is installed to cover the expansion joints, reducing the ground settlement caused by rainwater seeping through the expansion joints or into the abutment 1 or the foundation during rainy weather, thereby improving the stability of the expansion joints.

[0041] At the same time, an elastic first waterstop 31 is set up to always cover and waterproof the expansion joint when it undergoes slight deformation.

[0042] To further improve the waterproofness of the expansion joint, a second waterstop 32 is provided at the bottom of the connecting plate 11. The second waterstop 32 is a stainless steel waterstop and is "W" shaped. The second waterstop 32 is inclined from the middle to both ends. Drainage pipes corresponding to the two ends of the second waterstop 32 are provided on the pier at the bottom side of the bridge abutment 1.

[0043] Meanwhile, a locking block 34 is fixedly welded to the second waterstop 32. The locking block 34 is located on the side of the fixing plate away from the ear plate 21. A limiting hole 35 is opened on the locking block 34. The limiting hole 35 corresponding to the long ear plate 21 is waist-shaped, which reduces the concentration of water and reduces the dripping or seepage of water from the bottom side of the expansion joint into the foundation of the bridge abutment 1. The W-shaped design allows the second waterstop 32 to also undergo slight deformation when the expansion joint undergoes slight deformation, thereby providing a certain elastic recovery force when the expansion joint undergoes slight deformation and stabilizing the waterproofing of the expansion joint.

[0044] A seepage hole is provided on the fixed groove 33. The bottom side of the seepage hole is connected to the second waterstop 32. When the bridge deck drainage is not smooth during heavy rain, water is easy to accumulate at the expansion joint. Since the first waterstop 31 made of rubber is prone to slipping when water accumulates, the water is discharged to the second waterstop 32 through the seepage hole. The water is then discharged to the drain pipe through the second waterstop 32, thereby realizing the drainage operation at the expansion joint.

[0045] Meanwhile, the connecting plate 11 is provided with a shock absorber 36 for damping the vibration of the connecting plate 11. The shock absorber 36 includes a locking plate 361 fixed to the bottom of the connecting plate 11. The locking plate 361 has a locking hole and a locking rod 362. The locking rod 362 is arranged to pass through the two locking plates 361 in sequence. The diameter of both ends of the locking rod 362 is larger than that of the locking hole. A shock absorber spring 363 is fixedly connected to the end of the locking rod 362. The shock absorber spring 363 is fixedly connected to the locking plate 361.

[0046] The locking rod 362 and the shock-absorbing spring 363 provide a certain elastic restoring force to the two connecting plates 11 when the expansion joint undergoes slight deformation, thereby reducing the rigid deformation of the expansion joint.

[0047] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road bridge expansion joint, characterised in that: The structure includes two opposing building slabs and a waterstop (3) between the two building slabs. The building slabs include connecting plates (11) and reinforcing ribs (12) fixedly connected to the connecting plates (11). The reinforcing ribs (12) are fixedly embedded in the abutment (1). The two connecting plates (11) are arranged in an arc shape on the side that is close to each other. The arc of the two connecting plates (11) on the side that is close to each other is consistent and they are interlocked. The two building slabs are also provided with positioning components (2) for positioning the two connecting plates (11). The positioning component (2) includes ear plates (21) fixed on the connecting plate (11). Each connecting plate (11) has two ear plates (21). The two ear plates (21) are located at both ends of the connecting plate (11), and the length of one ear plate (21) is longer than the length of the other ear plate (21). When the two connecting plates (11) correspond, the long ear plate (21) on the connecting plate (11) corresponds to the corresponding short ear plate (21) on the other connecting plate (11). Each ear plate (21) is provided with a first fixing hole (23). Both ends of the connecting plate (11) are provided with fixing plates. The fixing plates are provided with two positioning holes (22). One positioning hole (22) corresponds to one of the first fixing holes (23), and the other positioning hole (22) corresponds to the other first fixing hole (23). The positioning hole (22) corresponding to the long ear plate (21) is an oblong hole. The fixing plate is also provided with a fixing rod (24). The fixing rod (24) is arranged to move through the first fixing hole (23) and the positioning hole (22) in sequence. One end of the fixing rod (24) through the positioning hole (22) is embedded and fixed in the bridge abutment (1). The end of the fixing rod (24) away from the bridge abutment (1) is threaded with a fixing nut (25). The fixing nut (25) is in close contact with the side of the ear plate (21) away from the fixing plate.

2. A road bridge expansion joint according to claim 1, characterised in that: The two connecting plates (11) are provided with fixing grooves (33) on the side away from each other. The water-stopping component (3) includes a first water-stopping strip (31). One side of the first water-stopping strip (31) is embedded in the fixing groove (33), and the other side of the first water-stopping strip (31) is embedded in the fixing groove (33) on another connecting plate (11). The first water-stopping strip (31) is arranged to cover the gap between the two connecting plates (11).

3. A road bridge expansion joint according to claim 2, wherein: The first waterstop (31) is a rubber waterstop.

4. A road bridge expansion joint according to claim 3, wherein: The space between the two connecting plates (11) is filled with an elastic filler, which is one of the following: sealant, asphalt, concrete, or EVA foam.

5. A road bridge expansion joint according to claim 4, wherein: The water-stopping component (3) also includes a second water-stopping strip (32) disposed on the bottom side of the connecting plate (11). The second water-stopping strip (32) is "W" shaped along the extension direction of the bridge abutment (1) and is arranged along the width direction of the bridge abutment (1). The second water-stopping strip (32) is a stainless steel water-stopping strip.

6. A road bridge expansion joint according to claim 5, wherein: A locking block (34) is fixedly connected to the second waterstop (32). The locking block (34) has a limiting hole (35) corresponding to the positioning hole (22). The limiting hole (35) is also waist-shaped. The fixing rod (24) is arranged through the limiting hole (35).

7. A road bridge expansion joint according to claim 6, wherein: The connecting plate (11) is also provided with a shock absorber (36) for damping the two connecting plates (11). The shock absorber (36) includes a locking plate (361) fixed to the bottom of the connecting plate (11). The locking plate (361) has a locking hole and a locking rod (362) on it. The locking rod (362) passes through the two locking plates (361) in sequence. The diameter of both ends of the locking rod (362) is larger than that of the locking hole. A shock absorber spring (363) is fixedly connected to the end of the locking rod (362). The shock absorber spring (363) is fixedly connected to the locking plate (361).

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