Bridge expansion device

Abstract

The utility model relates to the technical field of bridge engineering, in particular to a bridge expansion and contraction device which comprises two steel panels, a bridge expansion and contraction device body, a bridge expansion and contraction device body and a bridge expansion and contraction device, and the top ends of the two steel panels are flush with pavements on the two sides respectively; the anchoring structures are arranged below the two steel panels respectively and used for anchoring the steel panels on roads or bridges on the two sides; the drainage tank is fixedly arranged at the bottom between the two steel panels, and a hollow rubber damping structure is arranged in the drainage tank; and the gap between the two steel panels is filled with the gap filling material. According to the utility model, the service lives of the telescopic device and the notch concrete are prolonged; and the wheels and the telescopic device generate oblique crossing motion, so that the pollution of noise to the environment is reduced. And by arranging the joint filling material and the damping structure, vibration of the telescopic device can be effectively relieved, breakage of steel is delayed, the effects of vibration reduction and energy consumption can be achieved when the bridge stretches out and draws back, and the impact force of wheels on the telescopic device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a bridge expansion device. Background Art

[0002] A bridge expansion device refers to a transition structure usually arranged between two beam ends, between a beam end and an abutment, or at the hinge position of a bridge to meet the requirements of bridge deck deformation. It is required that the expansion device can freely expand and contract in two directions parallel and perpendicular to the bridge axis, be firm and reliable, and the vehicle should run smoothly when passing.

[0003] In the prior art, due to the gaps in the expansion device, when a vehicle passes by, a large amount of noise will be generated, which affects the driving comfort. After long-term use, due to the large vibration generated by the expansion device when a vehicle passes by, the steel will break, and the gaps will cause rainwater to seep into the bearing and abutment from the expansion device, affecting the durability of the bearing and the lower structure of the bridge, or garbage falling into the drainage trough to block drainage, etc. problems, increasing the maintenance frequency of the expansion device. When maintaining, there is also a high risk for maintenance personnel to operate on the carriageway.

[0004] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a bridge expansion device, thus effectively solving the problems in the background art.

[0006] In order to achieve the above object, the technical solution adopted by the utility model is: a bridge expansion device, comprising:

[0007] Two steel panels, the tops of the two steel panels are flush with the road surfaces on both sides respectively, and the planar contours of the two steel panels are wavy; the two steel panels are symmetrically arranged.

[0008] An anchoring structure, which is respectively arranged on the two steel panels and is used to anchor the steel panels on the roads or bridges on both sides;

[0009] A drainage trough, which is fixedly arranged at the bottom between the two steel panels, and a damping structure is arranged in the drainage trough; this drainage trough provides double protection to prevent water from flowing directly under the bridge after the joint filling material fails in extreme cases.

[0010] A joint filling material, which fills the gap between the two steel panels, and the top surface of the filling material is 5 mm lower than the steel panel to ensure that it does not protrude from the road surface when being extruded.

[0011] Furthermore, the damping structure includes a hollow rubber structure, which is disposed at the bottom of the caulking material to support the caulking material.

[0012] Furthermore, the top of the hollow rubber structure is flat, and the bottom is a curved surface that fits the shape of the drainage groove.

[0013] Furthermore, the caulking material includes any one or more of a supramolecular polymer network SPN, a covalent polymer network CPN, or a double-crosslinked polymer network DPN prepared by introducing covalent crosslinking points through click reactions between thiols and carbon-carbon double bonds.

[0014] Furthermore, the anchoring structure includes:

[0015] A number of anchoring steel plates are fixedly arranged on the steel panel, and the anchoring steel plates are perpendicular to the top plane of the steel panel;

[0016] A number of anchoring steel bars, and one of the anchoring steel bars is fixedly arranged on each of the anchoring steel plates.

[0017] Furthermore, a vertical end is fixedly arranged at the bottom of each of the two steel panels, the anchoring steel plate is fixedly arranged on the vertical end, and the drainage groove is located between the vertical ends of the two steel panels.

[0018] Furthermore, a number of the anchoring steel plates are arranged at equal intervals along the vertical end.

[0019] Furthermore, a number of anchoring bolts are arranged on the vertical end to fix the drainage groove.

[0020] Furthermore, the bottom end of the anchoring steel plate is larger than the top end of the anchoring steel bar.

[0021] Furthermore, the cross-section of the drainage groove is in the shape of Ω, and its two horizontal ends are arranged between the steel panel and the anchoring structure.

[0022] The beneficial effects of the present utility model are as follows: By setting a wavy structure on the steel panel, the present utility model causes an oblique movement when the vehicle passes through. The two edges of the steel panel along the transverse direction of the bridge are curved, so that the wheels do not roll through the gap simultaneously, forming an oblique movement between the wheels and the expansion device, thereby reducing the direct impact of the vehicle on the expansion device, and further reducing the environmental pollution caused by the noise when the wheels pass through. The curved structure increases the contact area between the panel and the concrete in the anchorage area, so that no stress concentration point appears on the contact surface, extending the service life of the expansion device and the concrete at the notch; and by setting the joint filling material and the damping structure, the vibration of the expansion device can be effectively reduced, delaying the fracture of the steel, and achieving the effect of vibration reduction and energy dissipation when the bridge undergoes expansion and contraction movement, reducing the impact force of the wheels on the expansion device. At the same time, a seamless design of the bridge expansion device is realized, preventing rainwater and garbage from entering the drainage groove and blocking the drainage channel. At the same time, in the extreme case of the failure of the joint filling material, the drainage groove can still drain smoothly, preventing rainwater from flowing directly under the bridge. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a structural schematic diagram of the expansion device;

[0025] Figure 2 is Figure 1 side view of

[0026] Figure 3 is a structural schematic diagram after hiding the damping structure and the joint filling material;

[0027] Figure 4 is a structural schematic diagram of the drainage groove and the anchorage structure;

[0028] Figure 5 is a structural schematic diagram of the damping structure;

[0029] Figure 6 is a structural schematic diagram of the drainage groove. Detailed Description of the Embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] As Figures 1 to 6 shown: A bridge expansion device includes:

[0034] Two steel panels 1, the tops of the two steel panels 1 are respectively flush with the road surfaces on both sides. Wave structures 11 are provided at one end of the two steel panels 1 close to each other. The planar contours of the two steel panels 1 are wave-shaped, and the two steel panels 1 are symmetrically arranged;

[0035] Anchoring structures 2 are respectively arranged on the two symmetrically arranged steel panels 1 for anchoring the steel panels 1 on the roads or bridges on both sides. Specifically, it can be between two beam ends, between a beam end and an abutment, or at the hinge position of the bridge;

[0036] A drainage groove 3 is fixedly arranged at the bottom between the two steel panels 1, and a damping structure 31 is arranged in the drainage groove 3;

[0037] A caulking material 4 fills the gap between the two steel panels 1. The caulking material is about 5 mm thick lower than the two steel panels, ensuring that it does not exceed the road surface when compressed.

[0038] By providing wave structures 11 on the steel panels 1, an oblique movement is generated when the vehicle passes. The two edges of the steel panel 1 along the bridge cross beam are curved, so that the wheels do not roll through simultaneously, forming an oblique movement between the wheels and the expansion device, thereby reducing the direct impact of the vehicle on the expansion device, and further reducing the environmental pollution caused by the noise generated when the wheels cross the gap. The curved structure increases the contact area between the panel and the concrete in the anchorage area, so that no stress concentration point appears on the contact surface, and the service life of the expansion device and the concrete in the slot is extended.

[0039] Moreover, by providing the caulking material 4 and the damping structure 31, the vibration of the expansion device can be effectively reduced, the fracture of the steel can be delayed, and the vibration damping and energy dissipation effects can be achieved during the expansion and contraction movement of the bridge, reducing the impact force of the wheels on the expansion device.

[0040] In this application, the damping structure 31 includes a hollow rubber structure, and the hollow rubber structure is arranged at the bottom of the caulking material 4 to support the caulking material 4.

[0041] The hollow rubber is provided to support the stability of the caulking material 4 during the expansion and contraction process. Moreover, the hollow rubber structure can effectively absorb the impact energy when the vehicle passes by, significantly reduce the noise, provide a smoother driving experience, reduce the stress concentration of the vibration on the steel panel 1 and the anchoring structure 2, avoid material fatigue and fracture, and extend the service life of the expansion device.

[0042] Among them, the top end of the hollow rubber structure is a plane, and the bottom is a curved surface that fits the shape of the drainage groove 3.

[0043] As a preference of the above embodiment, the caulking material 4 includes any one or more of a supramolecular polymer network SPN (Supramolecular Polymer Network), a covalent polymer network CPN (Covalent Polymer Network), or a dually cross-linked polymer network DPN (Dually Cross-linked Polymer Network) prepared by introducing covalent cross-linking points through the click reaction between thiol and carbon-carbon double bonds.

[0044] By introducing covalent cross-linking points through the click reaction between thiol and carbon-carbon double bonds to form a supramolecular polymer network, the SPN has excellent self-healing ability, high elasticity, and good environmental adaptability, and can maintain stable performance during long-term use. The polymer network connected by covalent bonds has a highly stable molecular structure. The CPN has high strength, high durability, and excellent anti-aging performance, and is suitable for use under high load and harsh environmental conditions. Combining the two mechanisms of supramolecular cross-linking and covalent cross-linking to form a dually cross-linked polymer network, the DPN combines the advantages of the SPN and the CPN, has higher elasticity, durability, and environmental adaptability, and can provide more reliable performance under various complex stress conditions.

[0045] Through the above caulking material 4 with excellent puncture resistance and self-repair, super strong damping shape memory, extremely large compression deformation amount, and extremely low compression stress, the problem of blockage of the expansion joint is solved, and the effective function of the expansion joint is ensured; the regular cleaning and maintenance work of the expansion joint is liberated, the maintenance cost is saved, the personal safety of the maintenance workers is guaranteed, and the water-blocking effect of the caulking material 4 can prevent rainwater from seeping into the bearing and the abutment from the expansion joint, effectively improving the durability of the bearing and the lower structure of the bridge.

[0046] In this embodiment, the anchoring structure 2 includes:

[0047] A number of anchoring steel plates 21 are fixedly arranged on the steel panel 1, and the anchoring steel plates 21 are perpendicular to the top plane of the steel panel 1;

[0048] A number of anchoring steel bars 22, and one anchoring steel bar 22 is fixedly arranged on each anchoring steel plate 21.

[0049] The combined design of the anchoring steel plates 21 and the anchoring steel bars 22 provides multiple supports, significantly improves the stability and firmness of the steel panel 1, and enhances the stability and durability of the bridge expansion device.

[0050] Wherein, a vertical end 12 is fixedly arranged at the bottom of each of the two steel panels 1, the anchoring steel plates 21 are fixedly arranged on the vertical end 12, and the drainage trough 3 is located between the vertical ends 12 of the two steel panels 1.

[0051] As an optimization of the above embodiment, a number of anchoring steel plates 21 are arranged at equal intervals along the vertical end 12.

[0052] A number of anchoring bolts 13 are arranged on the vertical end 12, and the number of anchoring bolts 13 fixes the drainage trough 3.

[0053] In this embodiment, the bottom end of the anchoring steel plate 21 and the anchoring steel bar 22 is larger than the top end. The cross-section of the drainage trough is in an Ω shape, and its two horizontal ends are arranged between the steel panel and the anchoring structure.

[0054] The steel panel 1 and the vertical end 12 are connected to the stainless steel Ω-shaped drainage trough 3 through the anchoring bolts 13; the connection between the drainage trough 3 and the expansion main structure is strengthened, the problem of poor durability of the waterproof or drainage structure of the expansion device in the traditional structural form is completely solved, the pain points of the waterproof or drainage structure of the expansion device in the traditional structural form that need to close the traffic for garbage cleaning or replacement are solved, there is no need to clean the garbage in the drainage trough 3 of the expansion joint, and the path for the slight noise generated by the vehicle passing through the expansion device to spread downward is blocked.

[0055] Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A bridge expansion device, characterized in that, Including: Two steel panels, the tops of the two steel panels are flush with the road surfaces on both sides respectively, and the planar contours of the two steel panels are wavy; An anchoring structure, the anchoring structure is respectively arranged on the two steel panels for anchoring the steel panels on the roads or bridges on both sides; A drainage trough, the drainage trough is fixedly arranged at the bottom between the two steel panels, and a damping structure is arranged in the drainage trough; A caulking material for filling the gap between the two steel panels.

2. The bridge expansion device according to claim 1, wherein, The damping structure includes a hollow rubber structure, and the hollow rubber structure is arranged at the bottom of the caulking material to support the caulking material.

3. The bridge expansion device according to claim 2, characterized in that, The top of the hollow rubber structure is a plane, and the bottom is a curved surface that fits the shape of the drainage trough.

4. The bridge expansion device according to claim 1, characterized in that, The caulking material includes any one or more of a supramolecular polymer network SPN, a covalent polymer network CPN, or a double cross-linked polymer network DPN prepared by introducing covalent cross-linking points through click reactions between thiols and carbon-carbon double bonds.

5. The bridge expansion device according to claim 1, wherein, The anchoring structure includes: A plurality of anchoring steel plates, the plurality of anchoring steel plates are fixedly arranged on the steel panel, and the anchoring steel plates are perpendicular to the top plane of the steel panel; A plurality of anchoring steel bars, and one of the anchoring steel bars is fixedly arranged on each of the anchoring steel plates.

6. The bridge expansion device according to claim 5, characterized in that, Vertical ends are respectively fixedly arranged at the bottoms of the two steel panels, the anchoring steel plates are fixedly arranged on the vertical ends, and the drainage trough is located between the vertical ends of the two steel panels.

7. The bridge expansion device according to claim 6, characterized in that, The plurality of anchoring steel plates are arranged at equal intervals along the vertical end.

8. The bridge expansion device according to claim 6, characterized in that, A plurality of anchoring bolts are arranged on the vertical end to fix the drainage trough.

9. The bridge expansion device according to claim 5, characterized in that, The anchoring steel plate has one end at the bottom of the anchoring steel bar larger than the end at the top.

10. The bridge expansion device according to claim 1, characterized in that, The cross-section of the drainage trough is in an Ω shape, and its two horizontal ends are arranged between the steel panel and the anchoring structure.

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