Bridge drainage system

Abstract

The utility model discloses a bridge drainage system which comprises a water collecting assembly, a main drainage pipeline and at least one longitudinal drainage pipeline, the water collecting assembly and the main drainage pipeline are arranged on the rear side of a bridge abutment, the main drainage pipeline is communicated with the water collecting assembly, and the longitudinal drainage pipeline is installed on a bridge body in the longitudinal direction of a bridge. One end of the longitudinal drainage pipeline is inserted into the water collecting assembly and can longitudinally move relative to the water collecting assembly. The bridge drainage system can cooperate with a beam body to stretch out and draw back, it is guaranteed that liquid leakage caused by the fact that the longitudinal drainage pipeline is snapped and cracked, the space behind a bridge abutment is fully utilized, and the problems that the space below the bridge is insufficient, the sight distance is insufficient, and the bridge is disordered and not attractive due to the fact that the pipeline is hung in front of the bridge abutment are solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge drainage technology, and in particular to a bridge drainage system. Background Technology

[0002] Construction projects emphasize environmental and water conservation, leading to a growing trend of incorporating emergency response pools into bridges spanning canals and rivers. Currently, most emergency response pools are located outside the bridge's perimeter, requiring pipelines to be installed on the bridge to collect and discharge water into the pools. When collecting liquids or rainwater, the water pipes are typically suspended below the bridge cantilever, with supports erected at the front edge of the abutment to hold the pipes in place.

[0003] Traditionally, longitudinal drainage pipes for bridges run down the bridge piers at the expansion joints without crossing the expansion joints. However, when it is necessary to collect accident liquids and concentrate them in an accident pool, the longitudinal drainage pipes need to cross the bridge expansion joints.

[0004] Because the drainage pipes of the beams and piers are fixed to their respective structures, when the beams expand and contract longitudinally due to temperature changes, the longitudinal drainage pipes fixed to the beams will also expand and contract along with them. At this time, the vertical drainage pipes fixed to the piers remain basically unchanged. Therefore, the drainage pipes of the two structures will experience significant misalignment at the expansion joints, leading to phenomena such as breakage, tearing, and snapping at the joints, causing liquid leakage and environmental pollution. Utility Model Content

[0005] The purpose of this utility model is to provide a bridge drainage system to solve the problem of breakage, tearing, and ripping at the joints of the drainage pipes caused by the longitudinal expansion and contraction of the bridge beam.

[0006] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0007] A bridge drainage system includes: a water collection component, a main drainage pipe, and at least one longitudinal drainage pipe. The water collection component and the main drainage pipe are located behind the bridge abutment. The longitudinal drainage pipe is installed on the bridge beam along the longitudinal direction of the bridge. One end of the longitudinal drainage pipe is inserted into the water collection component and can move longitudinally relative to the water collection component. The longitudinal drainage pipe is used to collect and discharge liquid on the bridge deck to the water collection component. The main drainage pipe is connected to the water collection component and is used to discharge the liquid in the water collection component to an emergency pool.

[0008] Preferably, the water collection component includes: a culvert and at least one water collection well, wherein the water collection well corresponds one-to-one with the longitudinal drainage pipe and is arranged transversely along the bridge, one end of the longitudinal drainage pipe is inserted into the water collection well and can move longitudinally relative to the water collection well, and the culvert connects each water collection well.

[0009] Preferably, the water collection well includes: a well body and a well cover installed on the well body, wherein the well body sidewall or the well cover has a water inlet, and one end of the longitudinal drainage pipe is inserted into the water collection well from the water inlet, wherein the size of the water inlet is larger than the size of one end of the longitudinal drainage pipe.

[0010] Preferably, the bridge abutment has a perforation, the size of which is larger than the size of one end of the longitudinal drainage pipe, and one end of the longitudinal drainage pipe passes through the perforation and is inserted into the water inlet.

[0011] Preferably, the elevation of each of the aforementioned water collection wells gradually decreases along the transverse direction of the bridge, and the main drainage pipe is connected to the water collection well with the lower elevation.

[0012] Preferably, the cross slope of the culvert is 1%.

[0013] Preferably, the side wall of the water collection well with a lower elevation has a water outlet, a water outlet pipe is installed in the water outlet, and a water stop strip is provided between the water outlet pipe and the water outlet.

[0014] Preferably, the end of the outlet pipe extending out of the collection well is provided with a first flange, the end of the main drainage pipe is provided with a second flange that connects to the first flange and has an inspection port, and the other end of the main drainage pipe is connected to the emergency pool.

[0015] Preferably, a settlement joint is provided between the water collection well and the culvert, and a compensation joint connecting the water collection well and the culvert is installed in the settlement joint.

[0016] Preferably, the bridge also includes a water collection trough installed on the beam, the water collection trough being connected to a longitudinal drainage pipe for collecting liquid on the bridge deck.

[0017] Preferably, the culvert is a slab culvert.

[0018] Preferably, the longitudinal drainage pipe is concealed beneath the bridge deck pedestrian walkway or the bridge beam.

[0019] The beneficial effects of this utility model by adopting the above technical solution are as follows: The longitudinal drainage pipe of this utility model is installed longitudinally on the beam, and the water collection component and the main drainage pipe are set on the rear side of the abutment. One end of the longitudinal drainage pipe is inserted into the water collection component and can move longitudinally relative to the water collection component, which can coordinate with the expansion and contraction of the beam to ensure that the longitudinal drainage pipe is not pulled apart or cracked, causing liquid leakage. At the same time, it also makes full use of the space behind the abutment, avoiding problems such as insufficient space under the bridge, insufficient visibility, and cluttered appearance caused by hanging the pipe in front of the abutment. It also avoids the need for support works in front of the abutment, reducing later maintenance and upkeep work. Attached Figure Description

[0020] Figure 1This is a partial cross-sectional schematic diagram of the drainage system on the rear side of the bridge abutment in Embodiment 1.

[0021] Figure 2 This is a diagram showing the arrangement of the longitudinal drainage pipes on the beam in Example 1.

[0022] Figure 3 for Figure 1 Enlarged layout view.

[0023] Figure 4 for Figure 1 A partial sectional view along the AA direction.

[0024] Figure 5 for Figure 1 A partial sectional view along the BB direction.

[0025] Figure 6 This is a partial cross-sectional schematic diagram of the drainage system on the rear side of the bridge abutment in Embodiment 2.

[0026] Figure 7 for Figure 6 A magnified view of a portion of the image.

[0027] Figure 8 for Figure 6 A partial sectional view along the AA direction.

[0028] The components include: 1. Water collection assembly; 11. Water collection well; 111. Well body; 112. Well cover; 113. Water inlet; 12. Culvert; 2. Longitudinal drainage pipe; 3. Main drainage pipe; 31. Second flange; 32. Inspection port; 4. Water outlet pipe; 41. First flange; 5. Waterstop; 6. Expansion joint; 7. Bridge abutment; 71. Perforation; 8. Bridge beam; 9. Bridge deck pedestrian walkway; 10. Water collection trough. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figures 1-5 As shown, this embodiment discloses a bridge drainage system, which includes: a water collection component 1, a main drainage pipe 3, and two longitudinal drainage pipes 2 (the number of longitudinal drainage pipes 2 can be increased or decreased according to actual needs). The water collection component 1 and the main drainage pipe 3 are installed on the rear side of the bridge abutment 7, and the main drainage pipe 3 is connected to the water collection component 1. The two longitudinal drainage pipes 2 are respectively installed longitudinally on the beams 8 on both sides of the bridge and are hidden under the pedestrian walkway 9 on the bridge deck. One end of the longitudinal drainage pipe 2 is inserted into the water collection component 1 and can move longitudinally relative to the water collection component 1. The longitudinal drainage pipes 2 are used to collect and discharge liquid on the bridge deck into the water collection component 1, and the main drainage pipe 3 is used to discharge the liquid in the water collection component 1 into the emergency pool.

[0032] In this embodiment, the longitudinal drainage pipe 2 is concealed under the pedestrian walkway 9 on the bridge deck, while the water collection component 1 and the main drainage pipe 3 are concealed behind the abutment 7. This fully utilizes the space behind the abutment and avoids problems such as insufficient space under the bridge, insufficient visibility, and a cluttered and unsightly appearance caused by pipes hanging in front of the abutment 7. It also avoids the need for support structures in front of the abutment, reducing later maintenance and repair work. The way the longitudinal drainage pipe 2 and the water collection component 1 work together ensures that the longitudinal drainage pipe 2 will not be pulled apart or cracked, causing liquid leakage.

[0033] Specifically, the water collection assembly 1 in this embodiment includes two water collection wells 11 and a culvert 12 connecting the two water collection wells 11. The two water collection wells 11 are arranged laterally along the bridge, and the elevation of one water collection well 11 is lower than that of the other water collection well 11. The main drainage pipe 3 is connected to the water collection well 11 with the lower elevation, and the cross slope of the culvert 12 is 1% to allow the liquid to flow along the inclined culvert 12, preventing the liquid from accumulating in the culvert 12 and ensuring that the liquid can be discharged smoothly.

[0034] The water collection well 11 includes a well body 111 and a well cover 112. The well cover 112 has a water inlet 113. The size of the water inlet 113 is larger than the size of one end of the longitudinal drainage pipe 2. One end of the longitudinal drainage pipe 2 is inserted into the water inlet 113 and can move longitudinally relative to the water collection well 11. The well cover 112 is provided for maintenance and flushing, and can prevent pipe blockage.

[0035] To facilitate connection between the main drainage pipe 3 and the lower-elevation sump 11, an outlet is provided on the side wall of the lower-elevation sump 11. An outlet pipe 4 is installed inside the outlet, with a first flange 41 at the end of the outlet pipe 4 extending out of the sump 11. A waterstop 5 is installed between the outlet pipe 4 and the outlet. One end of the main drainage pipe 3 is provided with a second flange 31 that mates with the first flange 41, and an inspection port 32 is provided for maintenance. The other end of the main drainage pipe 3 is connected to the emergency pool.

[0036] To prevent structural damage due to uneven foundation settlement, a settlement joint is provided between the water collection well 11 and the culvert 12, and a compensation joint 6 connecting the water collection well 11 and the culvert 12 is installed in the settlement joint.

[0037] In this embodiment, the culvert 12 is preferably a slab culvert.

[0038] To ensure that rainwater and other liquids are drained quickly and to prevent them from accumulating on the bridge deck, a water collection trough 10 connected to the longitudinal drainage pipe 2 can be installed on the beam 8 to effectively collect accumulated water and prevent it from overflowing on the bridge deck, thereby reducing potential damage to the bridge structure.

[0039] Example 2

[0040] Reference Figures 6-8 This embodiment is similar to Embodiment 1, with the main difference being:

[0041] 1. In this embodiment, the longitudinal drainage pipe 2 is suspended and hidden below the beam 8.

[0042] 2. In this embodiment, the inlet 113 of the water collection well 11 is opened on the side wall of the well body 111. Correspondingly, the bridge abutment 7 is provided with a through hole 71. The size of the through hole 71 is larger than the size of one end of the longitudinal drainage pipe 2. One end of the longitudinal drainage pipe 2 passes through the through hole 71 and is inserted into the inlet 113.

[0043] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims are within the scope of protection of the present invention.

Claims

1. A bridge drainage system, characterized in that, include: Water collection component (1) is located on the rear side of bridge abutment (7); At least one longitudinal drainage pipe (2) is installed on the beam (8) along the longitudinal direction of the bridge. One end of the longitudinal drainage pipe (2) is inserted into the water collection assembly (1) and can move longitudinally relative to the water collection assembly (1). The longitudinal drainage pipe (2) is used to collect and discharge liquid on the bridge surface to the water collection assembly (1). The main drainage pipe (3) is located on the rear side of the bridge abutment (7) and is connected to the water collection assembly (1) to discharge the liquid in the water collection assembly (1) to the emergency pool.

2. The bridge drainage system according to claim 1, characterized in that, The water collection assembly (1) includes: At least one water collection well (11) is provided, which corresponds one-to-one with the longitudinal drainage pipe (2) and is arranged laterally along the bridge. One end of the longitudinal drainage pipe (2) is inserted into the water collection well (11) and can move longitudinally relative to the water collection well (11). The culvert (12) connects to each of the aforementioned water collection wells (11).

3. The bridge drainage system according to claim 2, characterized in that, The water collection well (11) includes: a well body (111) and a well cover (112) installed on the well body (111). The well body (111) has an inlet (113) on its side wall or well cover (112). One end of the longitudinal drainage pipe (2) is inserted into the water collection well (11) from the inlet (113). The size of the inlet (113) is larger than the size of one end of the longitudinal drainage pipe (2).

4. The bridge drainage system according to claim 3, characterized in that, The bridge abutment (7) has a through hole (71), the size of which is larger than the size of one end of the longitudinal drainage pipe (2), and one end of the longitudinal drainage pipe (2) passes through the through hole (71) and is inserted into the inlet (113).

5. The bridge drainage system according to claim 2, characterized in that, The water collection wells (11) are gradually lowered along the transverse elevation of the bridge. The main drainage pipe (3) is connected to the water collection wells (11) with lower elevations. The cross slope of the culvert (12) is 1%.

6. The bridge drainage system according to claim 5, characterized in that, The side wall of the water collection well (11) with low elevation is provided with a water outlet, and a water outlet pipe (4) is installed in the water outlet. A water stop strip (5) is provided between the water outlet pipe (4) and the water outlet.

7. The bridge drainage system according to claim 6, characterized in that, The outlet pipe (4) is provided with a first flange (41) at one end extending out of the water collection well (11); One end of the main drainage pipe (3) is provided with a second flange (31) that connects to the first flange (41) and has an inspection port (32). The other end of the main drainage pipe (3) is connected to the emergency pool.

8. The bridge drainage system according to claim 2, characterized in that, A settlement joint is provided between the water collection well (11) and the culvert (12), and a compensation joint (6) connecting the water collection well (11) and the culvert (12) is installed in the settlement joint.

9. The bridge drainage system according to claim 2, characterized in that, It also includes a water collection trough (10) installed on the beam (8), the water collection trough (10) being connected to the longitudinal drainage pipe (2) for collecting liquid on the bridge deck; The culvert (12) is a slab culvert.

10. The bridge drainage system according to any one of claims 1 to 9, characterized in that, The longitudinal drainage pipe (2) is hidden under the bridge deck pedestrian walkway (9) or the beam (8).

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