Bridge expansion joint
By combining a bridge expansion joint structure with crossbeams, reinforcing beams, telescopic beams, elastic supports, and fixed support mechanisms, the problem of insufficient expansion and contraction performance of existing bridge expansion joints has been solved, achieving higher expansion and contraction performance and stability.
Patent Information
- Application Number
- CN202423162223.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing bridge expansion joints need further improvement in their ability to adjust for displacement and connection of the superstructure caused by vehicle loads and bridge construction materials.
The design incorporates a combination of equally spaced crossbeams, reinforcing beams, telescopic beams, elastic support mechanisms, and fixed support mechanisms, including waterproof sealing strips, elastic components, irregularly shaped reinforcing plates, and anchors, to enhance the support and expansion performance of the expansion joint.
It improves the expansion and contraction performance and stability of bridge expansion joints, enhances the strength and expansion capacity of modular support expansion joints, and ensures the smoothness and durability of expansion joints.
Smart Images
Figure CN223548419U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge construction engineering technology, and in particular to a bridge expansion joint. Background Technology
[0002] Bridge expansion joints: These are expansion joints installed between the ends of two beams, between the beam end and the abutment, or at the hinged joints of the bridge to accommodate bridge deck deformation. The expansion joints must be able to expand and contract freely in two directions, parallel and perpendicular to the bridge axis, and be sturdy and reliable. Vehicles should be able to pass over them smoothly without bumps or noise. They must also prevent rainwater and debris from seeping in and causing blockages. Installation, inspection, maintenance, and cleaning should be simple and convenient. At the location of the expansion joint, the railings and the bridge deck pavement must be disconnected.
[0003] In the existing technology, bridge expansion joints are used to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. Existing bridge expansion joints are generally divided into butt joint type, steel support type, combined shear type, modular support type and elastic device. Although modular support type expansion joints can effectively expand and contract when used as expansion joints, their expansion and contraction performance can be further improved. Therefore, we propose a bridge expansion joint. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology. Bridge expansion joints are used to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. Existing bridge expansion joints are generally divided into butt joint type, steel support type, combined shear type, modular support type and elastic device. When modular support type expansion joints are used as expansion joints, although they can effectively expand and contract freely, their expansion and contraction performance can be further improved.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A bridge expansion joint includes five horizontal beams arranged at equal intervals. A concave waterproof sealing strip is fixed to the top of the gap on the opposite side of the horizontal beams. Several horizontally installed reinforcing beams are fixed to the bottom of the horizontal beams at equal intervals. Expansion beams are symmetrically fixed to both sides of the bottom of the reinforcing beams. Several elastic support mechanisms are fixed to the opposite side of the expansion beams at equal intervals. Several sets of fixed support mechanisms are fixed to the opposite side of the expansion beams at equal intervals.
[0007] The elastic support mechanism includes a main support beam, a limiting groove is formed inside the main support beam, an elastic component is snapped into the limiting groove, and an auxiliary support beam is extended and fixed to the right side of the elastic component and located inside the limiting groove.
[0008] The fixed support mechanism includes displacement boxes arranged opposite each other. Each displacement box has three telescopic grooves on its opposite side. Telescopic components are engaged inside the telescopic grooves. Each telescopic component has a limiting plate fixedly connected to its opposite side. The limiting plate is fixedly connected to the telescopic beam.
[0009] As a preferred embodiment of this utility model, the elastic component includes a first rigid spring, and connecting steel plates are welded to both sides of the first rigid spring. The connecting steel plates are respectively welded to the main support beam and the auxiliary support beam.
[0010] As a preferred embodiment of this utility model, both the main support beam and the auxiliary support beam are fixedly connected to the bottom of an irregularly shaped reinforcing plate, which is made of steel.
[0011] The technical effect of adopting the above-mentioned further solution is that, by setting the irregularly shaped reinforcing plate, the irregularly shaped reinforcing plate can effectively connect the main support beam and the auxiliary support beam, thereby effectively ensuring the stability between the main support beam and the auxiliary support beam.
[0012] As a preferred embodiment of this utility model, the telescopic component includes a steel sleeve, a second rigid spring is fixedly connected inside the steel sleeve, and a telescopic roller is fixedly connected to the other end of the second rigid spring and extending inside the steel sleeve. The side of the telescopic roller away from the steel sleeve is fixedly connected to the telescopic groove.
[0013] As a preferred embodiment of this utility model, the displacement box is fixedly connected to a number of anchors on its periphery, and the displacement box is cast into the main body of the bridge.
[0014] The technical effect of adopting the above-mentioned further solution is that by setting the anchors, the contact area between the displacement box and the concrete can be increased, thereby effectively ensuring the stability of the displacement box.
[0015] As a preferred embodiment of this utility model, the waterproof sealing tape is made of rubber.
[0016] As a preferred embodiment of this utility model, the diameter of the limiting plate is larger than the diameter of the telescopic groove.
[0017] As a preferred embodiment of this utility model, the end of the main support beam away from the auxiliary support beam is fixedly connected to the telescopic beam, and the end of the auxiliary support beam away from the main support beam is fixedly connected to the telescopic beam.
[0018] The technical effect of adopting the above-mentioned further solution is that the main support beam and the auxiliary support beam are fixedly connected to the telescopic beam, which can effectively ensure the stability of the elastic support mechanism.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] In this invention, the elastic support mechanism and the fixed support mechanism are used. The elastic support mechanism can effectively support the telescopic beam and increase its elasticity while providing support. This effectively enhances the expansion and contraction performance of the modular support expansion joint. The fixed support mechanism can also support the telescopic beam and increase its elasticity while providing support. Thus, by having both the elastic support mechanism and the fixed support mechanism support the telescopic beam and increase its elasticity, the strength and elasticity of the modular support expansion joint can be effectively guaranteed. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of part of the structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the elastic component structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the telescopic component structure of this utility model.
[0025] Legend: 1. Crossbeam; 2. Waterproof sealing strip; 3. Reinforcing beam; 4. Telescopic beam; 5. Elastic support mechanism; 51. Main support beam; 52. Limiting groove; 53. Elastic component; 531. First rigid spring; 532. Connecting steel plate; 54. Auxiliary support beam; 55. Irregularly shaped reinforcing plate; 6. Fixed support mechanism; 61. Displacement box; 611. Anchor; 62. Telescopic groove; 63. Telescopic component; 631. Steel sleeve; 632. Second rigid spring; 633. Telescopic roller; 64. Limiting plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0027] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.
[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0030] Example 1
[0031] like Figure 1-4 As shown, this utility model provides a technical solution: a bridge expansion joint, comprising five equidistant horizontal beams 1, with a concave waterproof sealing strip 2 fixedly connected to the top of the gap on opposite sides of the horizontal beams 1, and several transversely installed reinforcing beams 3 equidistantly fixed to the bottom of the horizontal beams 1, with telescopic beams 4 symmetrically fixed to both sides of the bottom of the reinforcing beams 3, and several elastic support mechanisms 5 equidistantly fixed to opposite sides of the telescopic beams 4, and several sets of fixed support mechanisms 6 equidistantly fixed to the opposite sides of the telescopic beams 4, the elastic support mechanism 5 including a main support beam 51. The main support beam 51 has a limiting groove 52 inside, and an elastic component 53 is engaged inside the limiting groove 52. An auxiliary support beam 54 is extended and fixedly connected to the right side of the elastic component 53 inside the limiting groove 52. The fixed support mechanism 6 includes a displacement box 61 arranged opposite to each other. The displacement box 61 can effectively provide support. Three telescopic grooves 62 are opened on the opposite side of the displacement box 61. Telescopic components 63 are engaged inside the telescopic grooves 62. A limiting plate 64 is fixedly connected to the opposite side of the telescopic components 63. The limiting plate 64 is fixedly connected to the telescopic beam 4.
[0032] Example 2
[0033] like Figure 1-4 As shown, the elastic component 53 includes a first rigid spring 531, and connecting steel plates 532 are welded to both sides of the first rigid spring 531. The connecting steel plates 532 are welded to the main support beam 51 and the auxiliary support beam 54 respectively. The elastic component 53 can increase the elasticity between the main support beam 51 and the auxiliary support beam 54.
[0034] Both the main support beam 51 and the auxiliary support beam 54 are fixed to the bottom with irregularly shaped reinforcing plates 55, which are made of steel and can effectively reinforce the beam.
[0035] The telescopic assembly 63 includes a steel sleeve 631, a second rigid spring 632 is fixedly connected inside the steel sleeve 631, and a telescopic roller 633 is fixedly connected to the other end of the second rigid spring 632 and inside the steel sleeve 631. The side of the telescopic roller 633 away from the steel sleeve 631 is fixedly connected to the telescopic groove 62. The telescopic assembly 63 can effectively increase elasticity.
[0036] The displacement box 61 is fixedly connected to the outside of several anchors 611, and the displacement box 61 is cast into the main body of the bridge.
[0037] Waterproof sealing tape 2 is made of rubber, which has excellent sealing properties.
[0038] The diameter of the limiting plate 64 is larger than the diameter of the telescopic groove 62, which can effectively limit the telescopic component 63.
[0039] The end of the main support beam 51 furthest from the auxiliary support beam 54 is fixedly connected to the telescopic beam 4, and the end of the auxiliary support beam 54 furthest from the main support beam 51 is fixedly connected to the telescopic beam 4.
[0040] The working process of this utility model is as follows: When using a bridge expansion joint, firstly, when the bridge is put into use, vehicles passing through the expansion joint will first press on the crossbeam 1. When pressing on the crossbeam 1, the reinforcing beam 3 will support the crossbeam 1. At the same time, the expansion beam 4 will also provide support. During the support, the expansion beam 4 will displace. During the displacement, the auxiliary support beam 54 will displace within the limiting groove 52 inside the main support beam 51. During the displacement, the auxiliary support beam 54 will compress the elastic component 53. When the elastic component 53 is compressed, it will rebound to reduce the displacement of the expansion beam 4. At the same time, the expansion component 63 will expand and contract within the expansion groove 62 to support the expansion beam 4 and reduce the displacement of the expansion beam 4. Through its design, this utility model can effectively improve the extensibility of the modular support type expansion beam, thereby effectively ensuring the stability of the expansion joint.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bridge expansion joint, comprising five equidistant crossbeams (1), characterized in that: A concave waterproof sealing strip (2) is fixed to the gap near the top of the opposite side of the crossbeam (1). Several horizontally installed reinforcing beams (3) are fixed at equal intervals at the bottom of the crossbeam (1). Telescopic beams (4) are symmetrically fixed to both sides of the bottom of the reinforcing beams (3). Several elastic support mechanisms (5) are fixed at equal intervals on the opposite side of the telescopic beams (4). Several sets of fixed support mechanisms (6) are fixed at equal intervals on the opposite side of the telescopic beams (4). The elastic support mechanism (5) includes a main support beam (51), a limiting groove (52) is provided inside the main support beam (51), an elastic component (53) is snapped into the limiting groove (52), and an auxiliary support beam (54) is extended and fixed to the right side of the elastic component (53) and inside the limiting groove (52). The fixed support mechanism (6) includes a displacement box (61) arranged opposite to each other. Each displacement box (61) has three expansion grooves (62) on one side opposite to each other. An expansion component (63) is snapped into the inside of the expansion groove (62). A limit plate (64) is fixedly connected to the opposite side of each expansion component (63). The limit plate (64) is fixedly connected to the expansion beam (4).
2. A bridge expansion joint according to claim 1, characterized in that: The elastic component (53) includes a first rigid spring (531), and connecting steel plates (532) are welded to both sides of the first rigid spring (531). The connecting steel plates (532) are welded to the main support beam (51) and the auxiliary support beam (54) respectively.
3. A bridge expansion joint according to claim 1, characterized in that: The bottom of both the main support beam (51) and the auxiliary support beam (54) is fixed with a special-shaped reinforcing plate (55), which is made of steel.
4. A bridge expansion joint according to claim 1, characterized in that: The telescopic assembly (63) includes a steel sleeve (631), a second rigid spring (632) is fixedly connected inside the steel sleeve (631), and a telescopic roller (633) is fixedly connected to the other end of the second rigid spring (632) and inside the steel sleeve (631). The side of the telescopic roller (633) away from the steel sleeve (631) is fixedly connected to the telescopic groove (62).
5. A bridge expansion joint according to claim 1, characterized in that: The displacement box (61) is fixedly connected to a number of anchors (611) on its periphery, and the displacement box (61) is cast into the main body of the bridge.
6. A bridge expansion joint according to claim 1, characterized in that: The waterproof sealing tape (2) is made of rubber.
7. A bridge expansion joint according to claim 1, characterized in that: The diameter of the limiting plate (64) is larger than the diameter of the telescopic groove (62).
8. A bridge expansion joint according to claim 1, characterized in that: The end of the main support beam (51) away from the auxiliary support beam (54) is fixedly connected to the telescopic beam (4), and the end of the auxiliary support beam (54) away from the main support beam (51) is fixedly connected to the telescopic beam (4).