一种伸缩缝排水导流结构
By installing a double-layer waterproof structure and a water drainage system at the bridge expansion joints, the problem of water seepage caused by the deformation of the rubber sealing strip was solved, achieving efficient waterproofing and noise reduction, and improving the durability and safety of the bridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FOURTH OF CHINA CONSTR SEVENTH ENG
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-17
Smart Images

Figure CN224514041U_ABST
Abstract
Claims
1. A drainage and flow guide structure for a contraction joint, characterized by: It includes two expansion joint steel sections (1), a first waterproof layer, a second waterproof layer, and a water guide frame (6); The two expansion joint steel sections (1) are positioned at corresponding intervals, and both expansion joint steel sections (1) extend in the left and right directions. The expansion joint steel sections (1) are fixedly installed with embedded parts for connection with the bridge concrete. The first waterproof layer is set between the expansion joint steel sections (1) and is used to seal the top gap between the two expansion joint steel sections (1); The second waterproof layer is disposed between the expansion joint steel sections (1). The second waterproof layer includes a waterproof filler (3). The waterproof filler (3) is disposed between the two expansion joint steel sections (1) and is located below the first waterproof layer. The water guide frame (6) is set below the second waterproof layer. The water guide frame (6) is an open structure with an inclined slope. The water guide frame (6) is used to direct the water flow to the left and right sides of the bridge for centralized drainage. The front and rear ends of the water guide frame (6) are movably connected to the expansion joint steel (1) located on the same side. The waterproof filler (3) is provided with a water guiding structure, which is used to guide the water between the waterproof filler (3) and the first waterproof layer to the water guiding frame (6).
2. The drainage and flow guide structure for expansion joint according to claim 1, characterized in that: The waterproof filler (3) has a water guide groove. The water guide groove has an open top structure and an inclined slope. In the left and right direction, the water guide groove is inclined with the middle being high and the sides being low. The water guiding structure is installed inside the water guiding channel.
3. The drainage and flow guide structure for expansion joint according to claim 2, characterized in that: The water guiding structure includes a water guiding strip (5), and the water guiding groove has an opening that is open from top to bottom. The water guiding strip (5) is fixedly connected to the opening, and the lower end of the water guiding strip (5) extends downward into the water guiding frame (6).
4. The drainage and flow guide structure for expansion joint according to any one of claims 1-3, characterized in that: The lower surface of the expansion joint steel (1) is fixedly connected to a slide (8), and a slide groove is provided on the slide (8). The openings of the slide grooves are opposite to each other, and the water guide frame (6) is set between the two slides (8). The front and rear ends of the water guide frame (6) are fixedly connected with ear plates (601) extending in the left and right direction. The ear plates (601) are slidably connected to the slide groove located on the same side. Multiple reset springs (9) are provided in the slide groove, and the multiple reset springs (9) are arranged in an array at intervals in the left and right direction. The return spring (9) extends in the front-to-back direction and is located between the inner wall of the slide and the outer surface of the ear plate (601).
5. The drainage and flow guide structure for expansion joint according to any one of claims 1-3, characterized in that: The expansion joint steel (1) has an opposite mounting groove on its upper surface; The first waterproof layer includes a rubber sealing strip (2), which extends in the left-right direction, and both the front and rear ends of the rubber sealing strip (2) are fixedly connected to the mounting groove on the same side.
6. The drainage and flow guide structure for expansion joint according to any one of claims 1-3, characterized in that: The waterproof filler (3) is an EPE foam strip. Both ends of the EPE foam strip are fixedly connected to a connecting frame (4), and the connecting frame (4) is fixedly connected to the expansion joint steel (1) on the same side.
7. The drainage and flow guide structure for expansion joint according to any one of claims 1-3, characterized in that: The embedded parts include embedded steel bars (7). Multiple embedded steel bars (7) are fixedly connected to the back sides of the two expansion joint steel sections (1). The multiple embedded steel bars (7) are spaced apart in the left and right directions. The embedded steel bars (7) are used for bridge concrete connection.