Metal expansion joint
By setting upwardly bent metal plates and abutment plates on the steel beams of the bridge expansion joint, the problem of the existing rubber strips being liable to decay, improve the bearing capacity and service life of the expansion joints, and ensure the smooth bridge deck.
Patent Information
- Application Number
- CN202421422628.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing bridge expansion joints are prone to decay and deteriorated due to the low pressure capacity of rubber strips, resulting in a short service life, making it difficult to meet the demand for bridge deck deformation.
Metal expansion joints are adopted, by setting up an upwardly curved metal plate and abutment plate on the steel beam, the bearing capacity of the metal plate is increased when the expansion joint becomes narrower, and the abutment plate abuts under the metal plate when it becomes wider, preventing a significant decrease in the bearing capacity.
It improves the bearing capacity of the metal plate when the expansion joint becomes narrower, extends the service life of the expansion joint, and effectively prevents the bearing capacity from falling when widening, ensuring smooth bridge deck.
Smart Images
Figure CN222648575U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of expansion joints, and in particular to metal expansion joints applied to pavements or bridges. Background Art
[0002] Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in two directions parallel and perpendicular to the bridge axis, be firm and reliable, and vehicles should pass smoothly without sudden jumps and noise; they should be able to prevent rainwater and garbage and soil from infiltrating and blocking; installation, inspection, maintenance, and removal of dirt should be simple and convenient; where the expansion joints are set, the railings and the bridge deck pavement should be disconnected.
[0003] However, existing bridge expansion joints usually have rubber plates or rubber strips fixed between two steel beams to prevent water and dust and adapt to the displacement and deformation of the bridge through the deformation of the rubber strips. However, the rubber strips are usually exposed to the outside and are exposed to wind and sun for a long time, which makes them prone to decay and deterioration. In addition, the rubber plates have low pressure-bearing capacity and are easily broken, thereby shortening the service life of the expansion joints. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the present application provides a metal expansion joint.
[0005] The metal expansion joint provided in this application adopts the following technical solution:
[0006] The metal expansion joint comprises a left steel beam and a right steel beam fixedly arranged under the ground, wherein upper fixing grooves are arranged on opposite sides of the left steel beam and the right steel beam, and a metal plate is fixedly arranged in the upper fixing groove; the middle part of the metal plate is bent upward; a lower fixing groove is opened on the steel beam, and an abutment plate is fixedly arranged in the lower fixing groove, and the middle part of the abutment plate is bent upward.
[0007] A further technical solution is that a left fixed plate is fixedly provided on one side of the abutment plate, and the left fixed plate is fixedly provided on the right steel beam; a right fixed plate is fixedly provided on the other side of the abutment plate, and the right fixed plate is fixedly provided on the left steel beam.
[0008] This application has the following beneficial technical effects:
[0009] By arranging an upwardly curved metal plate and an abutment plate on the steel beam, the bearing capacity of the metal plate can be increased when the expansion joint becomes narrower. When the expansion joint becomes wider, the abutment plate abuts against the lower part of the metal plate to prevent a significant drop in the bearing capacity of the metal plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic cross-sectional structure diagram of one state of an embodiment of the present application;
[0011] Figure 2 is a schematic cross-sectional structure diagram of another state of an embodiment of the present application;
[0012] Figure 3 It is a three-dimensional schematic diagram of the abutment plate of an embodiment of the present application.
[0013] Figure numerals: 11, left steel beam; 12, right steel beam; 21, upper fixing groove; 22, lower fixing groove; 31, metal plate; 32, abutting plate; 41, left fixing plate; 42, right fixing plate. DETAILED DESCRIPTION
[0014] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.
[0015] The present application discloses a metal expansion joint. Figure 1 and Figure 2 The metal expansion joint includes a left steel beam 11 and a right steel beam 12 fixedly arranged under the ground, and upper fixing grooves 21 are arranged on opposite sides of the left steel beam 11 and the right steel beam 12, and a metal plate 31 is fixedly arranged in the upper fixing groove 21; the middle part of the metal plate 31 is bent upward; a lower fixing groove 22 is opened on the steel beam, and an abutment plate 32 is fixedly arranged in the lower fixing groove 22, and the middle part of the abutment plate 32 is bent upward.
[0016] The left steel beam 11 and the right steel beam 12 are cast or bolted in the ground, and the two opposite side surfaces are flush with the expansion joint of the road, and the upper end surfaces are flush with the road surface.
[0017] Reference Figure 3 A left fixing plate 41 is fixedly arranged on one side of the abutting plate 32, and the left fixing plate 41 is fixedly arranged on the right steel beam. A right fixing plate 42 is fixedly arranged on the other side of the abutting plate 32, and the right fixing plate 42 is fixedly arranged on the left steel beam. There are multiple left fixing plates 41 and right fixing plates 42, and they are staggered. The left fixing plates 41 and the right fixing plates 42 are provided with fixing holes for passing bolts.
[0018] When the expansion joint is narrow, the metal plate 31 is squeezed and bent upward, and the bearing capacity of the metal plate 31 is relatively large at this time; the right steel beam 12 pushes the left fixed plate 41, and the left steel beam 11 pushes the right fixed plate 42 to make the abutment plate 32 expand toward both sides.
[0019] When the expansion joint becomes wider, the metal plate 31 is pulled to expand to both sides, and the bearing capacity of the metal plate 31 is weakened; the right steel beam 12 pushes the left fixed plate 41, and the left steel beam 11 pushes the right fixed plate 42 to make the abutment plate 32 bend upward and abut against the bottom of the metal plate 31, thereby improving the bearing capacity of the metal plate 31 in the expanded state.
[0020] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. Metal expansion joint, characterized by: The invention comprises a left steel beam (11) and a right steel beam (12) fixedly arranged under the ground, wherein the opposite sides of the left steel beam (11) and the right steel beam (12) are provided with an upper fixing groove (21), a metal plate (31) is fixedly arranged in the upper fixing groove (21); the middle part of the metal plate (31) is bent upward; a lower fixing groove (22) is opened on the steel beam, a contact plate (32) is fixedly arranged in the lower fixing groove (22), and the middle part of the contact plate (32) is bent upward.
2. The metal expansion joint according to claim 1, characterized in that: A left fixed plate (41) is fixedly arranged on one side of the abutting plate (32), and the left fixed plate (41) is fixedly arranged on the right steel beam; a right fixed plate (42) is fixedly arranged on the other side of the abutting plate (32), and the right fixed plate (42) is fixedly arranged on the left steel beam.