Hidden urban viaduct surface drainage system
By using a concealed urban elevated bridge drainage system, which incorporates pre-embedded concrete pipes and a rotating centrifugal energy dissipation and pollution removal device, the durability and aesthetics of urban elevated bridge drainage systems have been addressed, achieving efficient separation of pollutants and reducing the risk of frost heave.
Patent Information
- Application Number
- CN202423064979.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing drainage systems for urban elevated bridges suffer from problems such as pipes aging and breaking easily, freezing and clogging in cold regions, and impacting bridge safety and aesthetics.
The system employs a concealed drainage system for urban elevated bridge decks, utilizing pre-embedded concrete pipes and socket joints, combined with a rotary centrifugal energy dissipation and decontamination device to achieve both durability and effective decontamination of the drainage pipes.
It improved the durability of the drainage system, reduced surface pollution of bridge piers, enhanced the aesthetic appearance, reduced the risk of frost heave, promoted the sedimentation and separation of large particulate pollutants, and reduced the cost of later maintenance.
Smart Images
Figure CN223706252U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge drainage technical field, concretely relates to a hidden urban viaduct deck drainage system. BACKGROUND
[0002] City bridge is an important part of city traffic, and plays a key node and link role in city traffic system. The construction of city river-crossing bridge improves the road network and the traffic efficiency of the road network under the premise of ensuring the normal function of river flood discharge, and the construction of city high bridge makes the city traffic more efficient and convenient.
[0003] However, if the bridge produces water, the following problems are prone to occur: on the one hand, the water causes the car to float and slide, affecting the safety of driving; on the other hand, the long-term water erosion causes the bridge structure, especially in the northern region, the freeze-thaw cycle in winter, accelerates the destruction of the bridge deck, and affects the safety of the bridge. The viaduct is laid overhead, and a large number of bridge piers are provided along the way. The bridge is provided with a rainwater inlet, and the water flows into the external rainwater horizontal pipe and the stand pipe through the bridge pier to drain to the ground rainwater system.
[0004] At present, the viaduct drainage system is mostly laid in the open pipe, in order to reduce the weight of the pipe material, the pipe is mostly plastic pipe, thereby producing the following problems: 1. The external pipe is easy to age and break, has poor durability, and the drainage seepage pollutes the surface of the pier; 2. In the northern region, the rainwater in the pipe is easy to freeze and block in cold weather, and the drainage is not smooth; 3. The external pipe affects the aesthetic feeling of the bridge.
[0005] Therefore, a hidden urban viaduct deck drainage system is developed and designed. CONTENT OF THE UTILITY MODEL
[0006] The utility model solves the above problems and provides a hidden urban viaduct deck drainage system.
[0007] The utility model is implemented by the following technical scheme: a hidden urban viaduct deck drainage system, characterized by comprising a water inlet arranged on the bridge deck, a drainage pipe arranged below the water inlet, the drainage pipe being fixed in the open along the box girder and the bottom of the box girder cantilever, the tail end of the drainage pipe being connected with a pre-buried pipe through a socket joint, the pre-buried pipe being pre-buried in the bridge pier, the bottom of the bridge pier being provided with a rotary centrifugal energy dissipation and pollution removal device, the rotary centrifugal energy dissipation and pollution removal device comprising a cyclone centrifugal well, a sediment well being arranged in the cyclone centrifugal well, the bottom of the sediment well being provided with a pervious concrete bottom plate, the cyclone centrifugal well being provided with a water inlet and a water outlet, the water outlet being higher than the water inlet, the water inlet being higher than the top of the sediment well, and the water inlet being connected with the pre-buried pipe through an elbow pipe.
[0008] Further, the drainage pipe is fixed on the box girder cantilever and the bottom of the box girder through a pipe clamp, and the diameter of the drainage pipe is DN150.
[0009] Further, the socket joint is installed in or outside the pier column; when the socket joint is installed in the pier column, the socket joint is embedded in the pier column and connected with the embedded pipe; when the socket joint is installed outside the pier column, the upper end of the socket joint is connected with the drainage pipe, the lower end is connected with the tee joint, and the lower end of the tee joint is connected with the embedded pipe on one side and is connected with the cleaning port on the other side.
[0010] Further, the distance from the outer surface of the embedded pipe to the surface of the pier column is greater than 30 cm.
[0011] Further, the vortex centrifugal well and the sediment well are designed in a concentric circle mode, and the top of the sediment well is designed in a tapered port mode.
[0012] Further, the water outlet is 30 cm higher than the water inlet.
[0013] The utility model discloses the beneficial effect is:
[0014] The utility model discloses utilize the strong bonding anchoring characteristic of concrete, avoid the longitudinal movement of embedded pipe thermal expansion and cold shrink, guarantee the integral integrity of embedded pipe, do not move disjointedly, simultaneously, reduce the pipe cracking leakage and the interface disjointed leakage caused by expansion and cold shrink reason because of the design of socket joint.
[0015] The utility model has good durability, effectively reduces the bridge pier surface pollution caused by drainage leakage, improves the overall appearance aesthetic feeling, effectively reduces the risk of embedded pipe frost heaving in winter, reduces the later maintenance cost.
[0016] The utility model discloses a rotary centrifugal energy dissipation and pollution removal device is set up at the bottom of the pier column, promotes the sedimentation separation of large particle pollutants, and is convenient for drainage. ACCURACY
[0017] Figure 1 It is the cross-bridge direction structure schematic diagram of the socket joint of the utility model in the pier column installation;
[0018] Figure 2 It is the cross-bridge direction structure schematic diagram of the socket joint of the utility model in the pier column installation;
[0019] Figure 3 It is the cross-bridge direction structure schematic diagram of the socket joint of the utility model in the pier column installation;
[0020] Figure 4 It is the cross-bridge direction structure schematic diagram of the socket joint of the utility model in the pier column installation;
[0021] Figure 5 It is the rotary centrifugal energy dissipation and pollution removal device section schematic diagram of the utility model;
[0022] Figure 6 The utility model discloses a rotating centrifugal energy dissipation and pollution removal device plane schematic view;
[0023] In the drawing, 1 water inlet, 2 drain pipe, 3 pipe clamp, 4 socket joint, 5 tee joint, 6 embedded pipe, 7 elbow, 9 rotating centrifugal energy dissipation and pollution removal device, 901 rotating flow centrifugal well, 902 mud settling well, 903 pervious concrete bottom plate, 904 water inlet, 905 water outlet, 10 box girder, 11 bridge pier column. DETAILED DESCRIPTION
[0024] In order to make the utility model's purpose, technical scheme and beneficial effect more clearly, the technical scheme in the utility model is further explained below with examples.
[0025] As Figures 1 to 6 The utility model discloses a hidden type urban viaduct deck drainage system, its characterized in that, including setting in the water inlet of bridge, the water inlet below is equipped with drain pipe, and the drain pipe is along the open -fixed of box girder and box girder cantilever bottom, and the drain pipe is fixed in the box girder cantilever and the bottom of box girder through pipe clamp, and the pipe clamp usually adopts U type card.
[0026] The tail end of the drain pipe is connected to the embedded pipe through the socket joint, the embedded pipe is embedded in the bridge pier column, and the distance from the outer surface of the embedded pipe to the surface of the bridge pier column is greater than 30 cm.
[0027] In order to promote the sedimentation and separation of large particle pollutants and ensure clean drainage, the bottom of the bridge pier column is provided with a rotating centrifugal energy dissipation and pollution removal device, the rotating centrifugal energy dissipation and pollution removal device comprises a rotating flow centrifugal well, a mud settling well is arranged in the rotating flow centrifugal well, a pervious concrete bottom plate is arranged at the bottom of the mud settling well to avoid long-term water accumulation in the mud settling well, a water inlet and a water outlet are arranged on the rotating flow centrifugal well, the water outlet is higher than the water inlet, the water inlet is higher than the top of the mud settling well, and the water inlet is connected to the embedded pipe through an elbow.
[0028] The rotating flow centrifugal well and the mud settling well adopt a concentric circle design, the centrifugal force of eccentric inlet / outlet water is improved, the well diameter of the outer ring rotating flow centrifugal well is 80 cm, the well diameter of the inner ring mud settling well is 40 cm, the top of the mud settling well adopts a tapered port design, the depth of the mud settling well is 30 cm, the height of the rotating flow centrifugal layer formed in the rotating flow centrifugal well is 30 cm, and the water outlet is 30 cm higher than the water inlet to ensure that the drainage is as clean as possible.
[0029] The socket joint is arranged in the bridge pier column or outside the bridge pier column in two modes; as Figures 1 to 2 When the socket joint is arranged in the bridge pier column, the socket joint is embedded in the bridge pier column and connected to the embedded pipe; as Figures 3 to 4 When the socket joint is arranged outside the bridge pier column, the upper end of the socket joint is connected to the drain pipe, the lower end of the socket joint is connected to the tee joint, and the lower end of the tee joint is connected to the embedded pipe on one side, and a cleaning port is arranged on the other side to facilitate later maintenance.
[0030] To reduce the risk of pipe blockage, the drainage pipe uses a diameter of DN150.
[0031] For vertically installed pipes such as drainage pipes and embedded pipes, the pipe openings should be sealed in a timely manner during construction to prevent foreign objects from falling in. In addition, to ensure smooth drainage and reduce bottom erosion, the angle of all corners of embedded pipes should not be less than 90°.
[0032] After construction, a ball-passing test is conducted using a ∅50 diameter plastic ball to ensure unobstructed pipeline flow.
[0033] To minimize the impact of the water outlet on the ground road, the water outlet and water discharge direction of the pipeline are set along the longitudinal direction of the road.
[0034] Rainwater accumulated on the bridge flows into the drainage pipe through the inlet, then into the pre-buried pipe, and from there flows to the rotary centrifugal energy dissipation and pollution removal device. The device rotates and centrifuges the water, causing large particles of pollutants to settle into the sedimentation tank. The water is then discharged into the surface rainwater drainage system through the outlet.
[0035] Except for the technical features described in the specification, all other technical features are known to those skilled in the art.
Claims
1. A concealed drainage system for urban elevated bridge decks, characterized in that, The system includes a water inlet installed on the bridge deck, a drainage pipe installed below the water inlet, the drainage pipe being fixedly installed along the bottom of the box girder and the cantilever of the box girder, and the end of the drainage pipe being connected to a pre-embedded pipe through a socket joint. The pre-embedded pipe is embedded in the bridge pier column, and a rotary centrifugal energy dissipation and decontamination device is installed at the bottom of the bridge pier column. The rotary centrifugal energy dissipation and decontamination device includes a vortex centrifugal well, a sedimentation well inside the vortex centrifugal well, and a permeable concrete base plate at the bottom of the sedimentation well. The vortex centrifugal well has an inlet and an outlet, with the outlet being higher than the inlet and the inlet being higher than the top of the sedimentation well. The inlet is connected to the pre-embedded pipe through a bend.
2. The concealed urban elevated bridge deck drainage system according to claim 1, characterized in that, The drainage pipe is fixed to the cantilever and bottom of the box girder by pipe clamps, and the diameter of the drainage pipe is DN150.
3. The concealed urban elevated bridge deck drainage system according to claim 1, characterized in that, The socket joint is installed inside or outside the bridge pier column. When the socket joint is installed inside the bridge pier column, it is pre-embedded in the bridge pier column and connected to the pre-embedded pipe. When the socket joint is installed outside the bridge pier column, the upper end of the socket joint is connected to the drainage pipe, and the lower end is connected to the tee joint. One side of the lower end of the tee joint is connected to the pre-embedded pipe, and the other side is used as a cleaning port.
4. A concealed urban elevated bridge deck drainage system according to claim 1, characterized in that, The distance from the outer surface of the pre-embedded pipe to the surface of the bridge pier column is greater than 30cm.
5. A concealed urban elevated bridge deck drainage system according to claim 1, characterized in that, The vortex centrifugal well and the sedimentation well are designed in concentric circles, with the top of the sedimentation well having a conical opening.
6. A concealed urban elevated bridge deck drainage system according to claim 1, characterized in that, The outlet is 30cm higher than the inlet.