Drainage system for bridge floor of pedestrian overpass
By designing a pedestrian overpass bridge deck drainage system including drainage pipe sections, connecting pipe sections and downspread pipe sections, the problem that the existing system cannot drain in time during heavy rainstorms is solved, and the effect of rapid drainage and bridge deck safety is achieved.
Patent Information
- Application Number
- CN202421810216.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing pedestrian overpass bridge deck drainage system cannot drain in time during heavy rainstorms or severe rainstorms, resulting in severe water accumulation in the bridge deck and poses safety hazards.
A pedestrian overpass bridge deck drainage system is designed, including drainage pipe sections, connecting pipe sections and downpipe sections. Through the L-shaped connecting pipe sections and horizontal extension sections, emergency drainage outlets and reverse ridges are set up to ensure that excessive water can be discharged in time when the precipitation is too large.
It effectively avoids water in the pedestrian overpass bridge area, improves the stability and safety of the drainage system, and ensures rapid drainage during heavy rainstorms or severe rainstorms.
Smart Images
Figure CN222809863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of municipal construction, in particular to a drainage system for a pedestrian bridge deck. Background Art
[0002] Pedestrian overpasses, also known as pedestrian flyovers, are usually built in areas with heavy traffic and dense pedestrian traffic, or at intersections, squares, and railways to ensure people's safe crossing, increase vehicle speed, and reduce traffic accidents.
[0003] The pedestrian bridge is equipped with a drainage system, and there are multiple drainage systems, which are located on both sides of the bridge deck of the pedestrian bridge. The upstream end of the drainage system is connected to the bridge deck of the pedestrian bridge, and a drainage pipe cover is set. The downstream end is bent and extends toward the steel box girder, and finally extends downward through a positioning hoop installed on the bridge pier and extends into the sand settling well.
[0004] Under normal circumstances, this type of drainage system can meet the needs of pedestrian bridge deck drainage. However, when encountering heavy rain or extremely heavy rain, the precipitation exceeds the design index, the drainage system has a curved section, which makes it impossible to drain water in time, causing serious water accumulation on the pedestrian bridge, posing a safety hazard.
[0005] Therefore, how to design a pedestrian bridge drainage system that can meet the requirements of rapid drainage is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention
[0006] The utility model aims to provide a pedestrian bridge deck drainage system in view of the deficiencies in the prior art, which has a simple structure and low processing cost, can effectively meet the needs of rapid drainage of the pedestrian bridge and avoid water accumulation on the pedestrian bridge deck.
[0007] The technical solution of the utility model is: a drainage system for a pedestrian bridge deck, comprising a drainage pipe section, a connecting pipe section, and a downpipe section, wherein the drainage pipe section is fixed on the pedestrian bridge deck, the upstream end is flush with the pedestrian bridge deck, and a drainage pipe cover is provided, and the downstream end extends vertically downward, the downpipe section is fixed on the pier of the pedestrian bridge, the upstream end extends obliquely upward, and the downstream end extends vertically downward into a sand settling well, the connecting pipe section is L-shaped, the longitudinal section of the L-shaped connecting pipe section is sleeved on the downstream end of the drainage pipe section, and the transverse section is sleeved on the upstream end of the downpipe section, a horizontal extension section is connected to the longitudinal section of the connecting pipe section, the horizontal extension section is higher than the transverse section, and the extension end of the horizontal extension section is sealed, an emergency drainage outlet is provided on the bottom surface of the horizontal extension section, and the seal is formed by applying force of a tension spring through a cover plate.
[0008] The longitudinal section of the connecting pipe section and the downstream end of the drainage pipe section are sealed by hot melt adhesive, and the transverse section of the connecting pipe section and the upstream end of the downpipe section are sealed by hot melt adhesive.
[0009] The connecting pipe section is suspended below the bridge deck of the pedestrian bridge through a suspension ring.
[0010] The starting end of the horizontal extension section is provided with a water return sill, and the water return sill is located at the lower part of the starting end of the horizontal extension section.
[0011] It also includes a cleaning net, which is suspended at the upstream end of the drainage pipe section and located below the drain pipe cover.
[0012] A plurality of hooks are arranged at intervals on the pipe wall at the upstream end of the drainage pipe section in a circumferential direction, and the cleaning net is suspended in the air by the plurality of hooks.
[0013] The shape of the cover plate is adapted to the shape of the emergency drain outlet. One end of the cover plate is hinged on the bottom surface of the horizontal extension section, and the other end is connected to a tension spring to seal the emergency drain outlet.
[0014] A sealing ring is arranged around the emergency drain outlet.
[0015] The above technical solution has the following beneficial effects:
[0016] 1. The drainage system of the pedestrian bridge deck includes a drainage pipe section, a connecting pipe section, and a downpipe section. The drainage pipe section is fixed on the pedestrian bridge deck, the upstream end is flush with the pedestrian bridge deck, and a drain pipe cover is provided, and the downstream end extends vertically downward. The downpipe section is fixed on the pier of the pedestrian bridge, the upstream end extends obliquely upward, and the downstream end extends vertically downward into the sand settling well. The connecting pipe section is L-shaped, and the longitudinal section of the L-shaped connecting pipe section is sleeved on the downstream end of the drainage pipe section, and the transverse section is sleeved on the upstream end of the downpipe section, that is, the drainage pipe section, the connecting pipe, and the downpipe are connected end to end to form a closed pipeline, which is used to discharge the accumulated water on the pedestrian bridge deck and ensure the stability of the closed pipeline on the pedestrian bridge. A horizontal extension section is connected to the longitudinal section of the connecting pipe section, the horizontal extension section is higher than the transverse section, and the extension end of the horizontal extension section is sealed. Under normal drainage conditions, the drainage flows to the sand trap through the drainage pipe section, the connecting pipe section, and the downpipe section, and the horizontal extension section is kept dry. An emergency drain port is provided on the bottom surface of the horizontal extension section, and the cover plate is sealed by the tension spring. Under normal circumstances, the cover plate is tightened by the tension spring to form a seal to avoid blockage caused by the entrance of foreign objects. When the precipitation is too large, the drainage volume of the downstream pipeline of the drainage system (connecting pipeline, downpipe) cannot meet the drainage volume of the drainage pipe section, and the excess drainage enters the horizontal extension section through the connecting pipe section. When the water level rises to a certain level, the cover plate is overweight, the tension spring is stretched, and the excess drainage is discharged through the emergency drain port to avoid water on the bridge surface of the pedestrian bridge.
[0017] 2. A water deflector is provided at the starting end of the horizontal extension section. The water deflector is located at the lower part of the starting end of the horizontal extension section to prevent water from entering the horizontal extension section during normal drainage, thereby keeping the horizontal extension section dry and extending its service life.
[0018] 3. It also includes a cleaning net, which is suspended at the upstream end of the drainage pipe section and located below the drain pipe cover to reduce the risk of impurities entering the closed pipeline and causing blockage.
[0019] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the connection between the utility model and the pedestrian bridge;
[0021] Figure 2 It is a structural schematic diagram of the utility model.
[0022] In the attached drawings, 1 is a drainage pipe section, 2 is a connecting pipe section, 21 is a longitudinal section, 22 is a transverse section, 3 is a downpipe section, 4 is a drain pipe cover, 5 is a horizontal extension section, 6 is an emergency drain outlet, 7 is a cover plate, 8 is a tension spring, 9 is a lifting ring, 10 is a water return sill, and 11 is a cleaning net. DETAILED DESCRIPTION
[0023] See also Figure 1 and Figure 2, which is a specific embodiment of a drainage system for a pedestrian bridge deck. The drainage system for a pedestrian bridge deck includes a drainage pipe section 1, a connecting pipe section 2, and a downpipe section 3. The number of drainage systems is determined according to the construction standard. The drainage pipe section 1 is fixed on the bridge deck of the pedestrian bridge, the upstream end is flush with the bridge deck of the pedestrian bridge, and a drain pipe cover 4 is provided, and the downstream end extends vertically downward. Usually, the drainage pipe section is arranged on both sides of the bridge deck of the pedestrian bridge. In order to prevent the entry of impurities, a plurality of hooks are arranged at intervals on the pipe wall of the upstream end of the drainage pipe section 1. By providing a cleaning net 11, the periphery of the cleaning net 11 is suspended on a plurality of hooks, which are suspended at the upstream end of the drainage pipe section 1 and are located below the drain pipe cover 4. The downpipe section 3 is fixed on the pier of the pedestrian bridge through a plurality of positioning hoops, the upstream end extends obliquely upward, and the downstream end extends vertically downward into the sand settling well. The connecting pipe section 2 is L-shaped, and the longitudinal section 21 of the L-shaped connecting pipe section is sleeved on the downstream end of the drainage pipe section 1, and the transverse section 22 is sleeved on the upstream end of the downpipe section 3. In order to ensure sealing and connection stability, the longitudinal section 21 of the connecting pipe section 2 and the downstream end of the drainage pipe section 1 are sealed by hot melt adhesive, and the transverse section 22 of the connecting pipe section 2 and the upstream end of the downpipe section 3 are sealed by hot melt adhesive, and the connecting pipe section 2 is suspended below the bridge deck of the pedestrian bridge through a hanging ring 9. A horizontal extension section 5 is connected to the longitudinal section 21 of the connecting pipe section 2, and the horizontal extension section 5 is higher than the transverse section 22, and the extension end of the horizontal extension section 5 is sealed. In order to ensure that the horizontal extension section is always in a dry state, a water return sill 10 is provided at the starting end of the horizontal extension section 5, and the water return sill 10 is located at the lower part of the starting end of the horizontal extension section 5. An emergency drain outlet 6 is provided on the bottom surface of the horizontal extension section 5, and a seal is formed by applying force from a tension spring 8 through a cover plate 7. Specifically, the shape of the cover plate 7 is adapted to the shape of the emergency drain outlet 6, one end of the cover plate 7 is hinged on the bottom surface of the horizontal extension section 5, and the other end is connected to the tension spring 8 to form a seal for the emergency drain outlet 6, and a sealing ring is provided around the emergency drain outlet 6.
[0024] The working principle of the utility model is as follows: under normal drainage conditions, the accumulated water on the bridge deck of the pedestrian bridge flows to the sand well through the drainage pipe section, the connecting pipe section, and the downpipe section, and keeps the horizontal extension section dry. When the precipitation is too large, causing the drainage volume of the downstream pipeline of the drainage system (connecting pipe section, downpipe section) to be unable to meet the drainage volume of the drainage pipe section, the excessive drainage enters the horizontal extension section through the connecting pipe section, and when the water level rises to a certain level, the cover plate is overweight, the tension spring is stretched, and the excessive drainage is discharged through the emergency drainage port to avoid water on the bridge surface of the pedestrian bridge.
Claims
1. A pedestrian bridge deck drainage system, characterized in that: It comprises a drainage pipe section (1), a connecting pipe section (2), and a downpipe section (3). The drainage pipe section (1) is fixed on the bridge deck of the pedestrian bridge, the upstream end is flush with the bridge deck of the pedestrian bridge, and a drainage pipe cover (4) is provided, and the downstream end extends vertically downward. The downpipe section (3) is fixed on the pier of the pedestrian bridge, with the upstream end extending obliquely upward and the downstream end extending vertically downward into the sand trap. The connecting pipe section (2) is L-shaped, the longitudinal section (21) of the L-shaped connecting pipe section is sleeved on the downstream end of the drainage pipe section (1), and the transverse section (22) is sleeved on the upstream end of the downpipe section (3). A horizontal extension section (5) is connected to the longitudinal section (21) of the connecting pipe section (2), the horizontal extension section (5) is higher than the transverse section (22), and the extension end of the horizontal extension section (5) is sealed. An emergency drain outlet (6) is provided on the bottom surface of the horizontal extension section (5), and is sealed by a tension spring (8) through a cover plate (7).
2. The pedestrian bridge deck drainage system according to claim 1, characterized in that: The longitudinal section (21) of the connecting pipe section (2) and the downstream end of the drainage pipe section (1) are sealed by hot melt adhesive, and the transverse section (22) of the connecting pipe section (2) and the upstream end of the downpipe section (3) are sealed by hot melt adhesive.
3. The pedestrian bridge deck drainage system according to claim 1, characterized in that: The connecting pipe section (2) is suspended below the bridge deck of the pedestrian bridge via a suspension ring (9).
4. The pedestrian bridge deck drainage system according to claim 1, characterized in that: The starting end of the horizontal extension section (5) is provided with a water return sill (10), and the water return sill (10) is located at the lower part of the starting end of the horizontal extension section (5).
5. The pedestrian bridge deck drainage system according to claim 1, characterized in that: It also comprises a cleaning net (11), which is suspended at the upstream end of the drainage pipe section (1) and is located below the drain pipe cover (4).
6. The pedestrian bridge deck drainage system according to claim 5, characterized in that: A plurality of hooks are arranged at intervals in the circumferential direction on the pipe wall at the upstream end of the drainage pipe section (1), and the cleaning net (11) is suspended in the air by means of the plurality of hooks.
7. The pedestrian bridge deck drainage system according to claim 1, characterized in that: The shape of the cover plate (7) is adapted to the shape of the emergency drain outlet (6); one end of the cover plate (7) is hinged on the bottom surface of the horizontal extension section (5), and the other end is connected to the tension spring (8) to seal the emergency drain outlet (6).
8. The pedestrian bridge deck drainage system according to claim 1 or 7, characterized in that: A sealing ring is arranged around the emergency drain port (6).