Integrated structure of drainage ditch and expansion joint of pedestrian overpass
By embedding rubber connecting strips at the expansion joints of the steel box girder pedestrian overpass to form a U-shaped drainage channel, and setting up a rainwater bucket and water conduit pipe, the problem of water and expansion joint leakage in the overpass area is solved, efficient rainwater drainage and expansion deformation adaptation is achieved, and the durability and aesthetics of the overpass are improved.
Patent Information
- Application Number
- CN202421913937.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing steel box girder pedestrian bridge lacks effective drainage facilities, resulting in water in the bridge area, damage to the bridge deck, and increasing maintenance costs. At the same time, the expansion joints have problems such as poor durability and serious leakage.
An integrated structure of expansion joint of the pedestrian overpass drainage ditch is designed. By embedding rubber connecting strips at the expansion joints, a U-shaped drainage channel is formed, and a rainwater bucket and water conduit are installed at both ends of the expansion joints to connect the road rainwater system to achieve orderly rainwater drainage.
It effectively solves the problem of water and expansion joint leakage in the overpass area, improves the drainage capacity of the overpass and the durability of the ancillary facilities, reduces subsequent maintenance costs, and achieves the unity of economy, aesthetics and durability.
Smart Images
Figure CN222961885U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of municipal engineering, and relates to a drainage structure of a pedestrian overpass, in particular to an integrated structure of a drainage ditch and a expansion joint of a pedestrian overpass. Background Technique
[0002] The rapid increase in urban population has brought great pressure to urban traffic. As a facility for pedestrians to cross the street, pedestrian overpasses can effectively improve the traffic capacity of the urban road network and ensure the safety and convenience of pedestrians crossing the street, and are widely used in urban construction. The steel box girder pedestrian overpass is a form of steel structure pedestrian overpass, which has many advantages in practical applications, such as fast construction, small self-weight, good seismic resistance, etc.; the steel structure can be processed first and then transported to the bridge site for on-site splicing and combination, which can effectively shorten the construction period and have little impact on traffic. It is the first choice for current overpass construction. The application of steel box girder bridges in China is becoming more and more common and has been widely promoted and applied.
[0003] The drainage ditch and the expansion joint are important auxiliary facilities of the steel box girder pedestrian overpass. After investigation, there is no drainage facility in the existing steel box girder pedestrian overpass. The rainwater and snow water on the bridge deck can only flow along the bridge deck ramp. The expansion joint of the overpass leaks seriously, and most of them rely on natural drainage to achieve unorganized drainage into the road drainage system. Due to the lack of effective drainage facilities, the bridge deck of the pedestrian overpass is seriously waterlogged, which in turn damages the bridge deck, accelerates the aging and cracking of the overpass, the bridge deck needs to be repaired continuously, and the subsequent maintenance cost increases. The existing expansion joints of overpasses have problems such as poor durability, inability to meet the requirements of expansion amount, and inconvenient installation and use. Adopting a simple and feasible integrated device for drainage ditch and expansion joint to improve the drainage capacity of pedestrian overpasses and extend the service life of overpasses is an important problem that needs to be solved in municipal engineering. Content of the Utility Model
[0004] The purpose of the utility model is to solve the problem that the existing steel box girder pedestrian overpass has no drainage facility, the rainwater and snow water on the bridge deck can only flow along the bridge deck ramp, the expansion joint of the overpass leaks seriously, resulting in serious waterlogging on the bridge deck of the pedestrian overpass, and then damaging the bridge deck. A integrated structure of a drainage ditch and a expansion joint of a pedestrian overpass is provided, and a reasonable drainage ditch and expansion joint structure is designed, so that while meeting the drainage function, it can also adapt to the expansion and contraction deformation of the overpass, and on the premise of meeting the use function, improve the aesthetics of urban pedestrian overpasses, as well as improve the durability of overpass auxiliary facilities, further save the subsequent maintenance cost, and achieve the organic unity of economy, aesthetics and durability.
[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: An integrated structure of expansion joints for drainage ditches of pedestrian overpasses, including several steel box girders. There are expansion joints between adjacent steel box girders. A rubber connecting strip is embedded in the expansion joints. The two sides of the rubber connecting strip are respectively fixed to the steel box girders on both sides. The middle part of the rubber connecting strip is U-shaped, forming a drainage channel. Rainwater inlets are respectively arranged at both ends of the expansion joints. The lower part of the rainwater inlets is connected to the road rainwater system through water guide pipes. Both ends of the drainage channel are respectively located above the corresponding rainwater inlets.
[0006] In this device, a waterproof rubber connecting strip is arranged at the expansion joint of the steel box girder. The U-shaped groove formed by the rubber connecting strip is used as a drainage ditch in this device. The expansion joints and drainage ditches of the pedestrian overpass are effectively integrated. While meeting the drainage function, it can also adapt to the expansion and contraction deformation of the overpass. The rainwater on the bridge deck of the pedestrian overpass is orderly guided to the rainwater inlets at both ends of the expansion joint for orderly centralized drainage, improving the situation that the expansion joints of the overpass leak severely and mostly rely on natural drainage to achieve unorganized drainage into the road drainage system. It improves the durability of the ancillary facilities of the overpass, further saves the subsequent maintenance cost, and achieves the organic unity of economy, aesthetics and durability.
[0007] Preferably, rubber strip fixing seats are symmetrically arranged on the upper parts of the side edges of the steel box girders on both sides of the expansion joint. The opposite sides of the two rubber strip fixing seats are provided with clamping grooves with large inner openings and small outer openings. The two sides of the rubber connecting strip are respectively clamped in the clamping grooves.
[0008] Preferably, fixing bolts are arranged at the bottom of the rubber strip fixing seats. The fixing bolts pass through the upper beam plate of the steel box girder and are fixed by bolts.
[0009] Preferably, the rubber strip fixing seats are made of steel materials.
[0010] Preferably, a paving layer is arranged on the top surface of the steel box girder, and the upper surface of the paving layer is flush with the upper surface of the rubber strip fixing seat.
[0011] Preferably, a diversion sleeve with a flared shape expanding outwards is arranged above the rainwater inlet. The two sides of the diversion sleeve are fixed to the steel box girders on both sides. The width of the diversion sleeve is greater than the width of the drainage channel.
[0012] Preferably, the rubber connecting strip is made of chloroprene rubber.
[0013] Preferably, the water guide pipe is fixed to the side surface of the steel box girder by pipe clamps.
[0014] The utility model effectively integrates the expansion joint and drainage ditch of the pedestrian overpass. While meeting the drainage function, it can also adapt to the expansion and deformation of the overpass, guiding the rainwater on the bridge deck of the pedestrian overpass to the rainwater funnels at both ends of the expansion joint for orderly centralized drainage, improving the serious leakage of the expansion joint of the overpass. Most of them rely on natural drainage to achieve unorganized drainage into the road drainage system. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present utility model will be further described below with reference to the accompanying drawings.
[0016] Figure 1 It is a schematic elevation structure diagram of a steel box girder of the present utility model.
[0017] Figure 2 It is a schematic plan structure diagram of a steel box girder of the present utility model.
[0018] Figure 3 It is the present utility model Figure 2 The structure diagram of A-A in it.
[0019] Figure 4 It is the present utility model Figure 2 The structure diagram of B-B in it.
[0020] In the figure: 1. Steel box girder, 2. Pavement layer, 3. Rainwater funnel, 4. Water guide pipe, 5. Pipe clamp, 6. Guardrail, 7. Rubber connection strip, 8. Rubber strip fixing seat, 9. Fixed bolt, 10. Drainage channel, 11. Card slot, 12. Diversion sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The present utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.
[0022] Embodiment: An integrated structure of the drainage ditch and expansion joint of a pedestrian overpass, as Figure 1 、 2 shown. The device includes a plurality of steel box girders 1 that are spliced together once to form a pedestrian overpass. An expansion joint is provided between adjacent steel box girders. A rubber connection strip 7 is embedded in the expansion joint. Rubber strip fixing seats 8 are symmetrically arranged on the upper sides of the side edges of the steel box girders 1 on both sides of the expansion joint. Card slots 11 with a large inner opening and a small outer opening are arranged on the opposite side surfaces of the two rubber strip fixing seats 8. Both sides of the rubber connection strip 7 are respectively clamped in the card slots 11. A fixed bolt 9 is arranged at the bottom of the rubber strip fixing seat 8. The fixed bolt passes through the upper beam plate of the steel box girder 1 and is fixed by bolts. The rubber strip fixing seat is a D-shaped steel. A pavement layer 2 is arranged on the top surface of the steel box girder 1, and the upper surface of the pavement layer 2 is flush with the upper surface of the rubber strip fixing seat 8.
[0023] The rubber connecting strip 7 is made of neoprene. The middle part of the rubber connecting strip 7 is U-shaped, forming a drainage channel 10. Rainwater funnels 3 are respectively arranged at both ends of the expansion joint. The lower part of the rainwater funnel is connected to the road rainwater system through a water guide pipe 4. The water guide pipe is fixed to the side of the steel box girder by a pipe clamp. Both ends of the drainage channel 10 are respectively located above the corresponding rainwater funnels 3. A horn-shaped diversion sleeve 12 that expands outward is arranged above the rainwater funnel 3. Both sides of the diversion sleeve 12 are fixed to the two sides of the steel box girder 1. The width of the diversion sleeve 12 is greater than the width of the drainage channel 10.
[0024] This device uses the U-shaped groove formed by the rubber connecting strip as a drainage ditch, effectively integrating the expansion joint and the drainage ditch of the pedestrian overpass. While meeting the drainage function, it can also adapt to the expansion and contraction deformation of the overpass, guiding the bridge deck rainwater of the pedestrian overpass to the rainwater funnels at both ends of the expansion joint for orderly centralized drainage, improving the serious leakage of the overpass expansion joint. Most of them rely on natural drainage to achieve unorganized drainage into the road drainage system. It improves the durability of the overpass auxiliary facilities, further saves the subsequent maintenance cost, and achieves the organic unity of economy, aesthetics and durability.
Claims
1. An integrated expansion joint structure of a pedestrian bridge drainage ditch, comprising a plurality of steel box girders, with expansion joints arranged between adjacent steel box girders, characterized in that: A rubber connecting strip is embedded in the expansion joint, and the two sides of the rubber connecting strip are respectively fixed to the steel box girders on both sides. The middle part of the rubber connecting strip is U-shaped to form a drainage channel. Rainwater gutters are respectively provided at both ends of the expansion joint. The bottom of the rainwater gutters is connected to the road rainwater system through a water pipe, and the two ends of the drainage channel are respectively located above the corresponding rainwater gutters.
2. The integrated structure of expansion joints of drainage ditches of pedestrian bridges according to claim 1 is characterized in that: The upper parts of the sides of the steel box beams on both sides of the expansion joint are symmetrically provided with rubber strip fixing seats, and the opposite sides of the rubber strip fixing seats on both sides are provided with slots with large inner sides and small mouths, and the two sides of the rubber connecting strip are respectively clamped in the slots.
3. The integrated structure of expansion joints of drainage ditch of pedestrian bridge according to claim 2 is characterized by: A fixing bolt is arranged at the bottom of the rubber strip fixing seat, and the fixing bolt passes through the upper beam plate of the steel box beam and is fixed by the bolt.
4. The integrated structure of expansion joints of drainage ditches of pedestrian bridges according to claim 2 is characterized in that: The rubber strip fixing seat is made of steel material.
5. The integrated structure of expansion joints of drainage ditch of pedestrian bridge according to claim 2 is characterized by: The top surface of the steel box girder is provided with a paving layer, and the paving layer is flush with the upper surface of the rubber strip fixing seat.
6. The integrated structure of expansion joints of drainage ditches of pedestrian bridges according to claim 1, 2, 3, 4 or 5, characterized in that: A trumpet-shaped outwardly expanded flow guide sleeve is arranged above the rainwater gutter, two sides of the flow guide sleeve are fixed to the steel box beams on both sides, and the width of the flow guide sleeve is greater than the width of the drainage channel.
7. The integrated structure of expansion joints of drainage ditches of pedestrian bridges according to claim 1, 2, 3, 4 or 5, characterized in that: The rubber connecting strip is made of chloroprene rubber.
8. The integrated structure of expansion joints of drainage ditches of pedestrian bridges according to claim 1, 2, 3, 4 or 5, characterized in that: The water guide pipe is fixed to the side surface of the steel box girder by using a pipe clamp.