一种桥梁伸缩装置
By introducing sliding steel sections and rubber strips into the bridge expansion joint, the problem of insufficient lateral displacement capacity was solved, achieving greater lateral deformation and longitudinal adaptability, thereby improving construction efficiency and equipment durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ELECTROMECHANICAL IND RES & DESIGN INST CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing bridge expansion joints are insufficient in lateral displacement capacity, unable to meet the needs of large lateral displacement in specific projects, and are difficult to construct.
The structure adopts a design that includes fixed steel sections and sliding steel sections. The sliding steel sections slide freely within the grooves of the fixed steel sections, and the rubber belt enables lateral expansion and contraction. It is equipped with a return spring and reinforcing components to enhance stability and durability.
This design achieves sufficient deformation capacity in lateral displacement of the bridge, while also considering longitudinal adaptability. It features a simple structure, convenient construction, and improved construction efficiency and equipment durability.
Smart Images
Figure CN224514044U_ABST
Abstract
Claims
1. A bridge expansion joint, characterized in that include: Fixed steel components (2) and sliding steel components (3) are respectively installed in the beams (1) on both sides of the bridge expansion joint. The sliding steel member (3) includes a fixed steel member (31) and a sliding steel member (32). The fixed steel member (31) is fixedly connected to the beam body (1). The fixed steel member (31) is provided with a sliding groove, and the sliding steel member (32) is slidably connected in the sliding groove. A rubber strip (4) is connected on one side to a fixed steel member (2) and on the other side to a sliding steel member (32) so that the rubber strip (4) can slide laterally relative to the fixed steel member (31).
2. The bridge expansion joint as described in claim 1, characterized in that, The sliding steel member (3) also includes a sliding plate (33), which is installed between the fixed steel (31) and the sliding steel (32).
3. The bridge expansion joint according to claim 1, characterized in that, The sliding steel member (3) also includes at least two return springs (34), which are respectively disposed at both ends of the sliding steel member (32); In the vertical direction, the surface of the return spring (34) is in the same plane as the surface of the sliding steel (32).
4. The bridge expansion joint according to claim 1, characterized in that, The fixed steel section (31) has an E-shaped structure.
5. The bridge expansion joint according to claim 1, characterized in that, In the vertical direction, the top surface of the fixed steel member (2) is flush with the top surface of the fixed steel member (31); The bottom surface of the fixed steel member (2) is flush with the bottom surface of the fixed steel member (31).
6. The bridge expansion joint according to claim 1, characterized in that, The fixed steel member (2) has a protrusion (22) on the side away from the sliding steel member (3), and the protrusion (22) is fixedly connected to another beam (1).
7. The bridge expansion joint according to claim 1, characterized in that, Each beam (1) is provided with a row of pre-embedded steel bars (11), and the sliding steel member (3) and the fixed steel member (2) are arranged between the two rows of pre-embedded steel bars (11).
8. The bridge expansion joint according to claim 1, characterized in that, Each beam (1) is also provided with a vertically arranged reinforcing member (12), which is located on the side of the pre-embedded steel bar (11) away from the rubber strip (4); The top surface of the reinforcing member (12) is flush with the top surface of the beam (1).
9. The bridge expansion joint according to claim 7, characterized in that, Each beam (1) is also provided with a plurality of first anchoring steel bars (13) and second anchoring steel bars (14), wherein the first anchoring steel bars (13) are at least partially connected to the pre-embedded steel bars (11) by binding; The second anchoring steel bar (14) is located on one side near the top surface of the beam (1).
10. The bridge expansion joint according to claim 9, characterized in that, Each beam (1) is also provided with a plurality of spaced first transverse steel bars (15) and second transverse steel bars (16), the first transverse steel bars (15) being erected between the pre-embedded steel bars (11); The second transverse reinforcement (16) is placed between the second anchor reinforcement (14) and the second transverse reinforcement (16), and the second transverse reinforcement (16) is connected to the second anchor reinforcement (14) by binding.