Highway bridge facilitating water drainage

Abstract

This utility model discloses a highway bridge with convenient drainage, comprising a beam body and concrete and asphalt layers arranged sequentially from bottom to top on the beam body. Drainage ditches are provided on both sides of the beam body, with a filter layer at the top of the drainage ditches. A water collection trough of a certain height is reserved above the filter layer. Multiple drainage holes are spaced along the length of the bridge on the filter layer, with filter plugs inside the drainage holes. A drain pipe is provided at the bottom of the drainage holes, with the outlet of the drain pipe extending to the pier foot and connecting to a collection pool. This utility model has a simple structure, high ease of construction, short construction period, and low construction cost. It ensures good drainage effect and is very easy to clean, greatly reducing cleaning costs. The addition of a rainwater collection pool at the pier foot of the highway bridge enables rainwater recycling, which is environmentally friendly and prevents foundation corrosion at the pier foot, thus improving the service life of the bridge.

Description

Technical Field

[0001] This utility model relates to a highway bridge that facilitates drainage, belonging to the technical field of bridge drainage structure. Background Technology

[0002] With the rapid development of my country's economy and urbanization, infrastructure construction has been greatly promoted. Roads and bridges, as an important component of transportation infrastructure, have been significantly developed and improved. Numerous highways, urban roads, and bridge projects have been completed, greatly enhancing the efficiency and convenience of transportation. However, bridge drainage systems directly affect the bridge deck's anti-skid properties, structural durability, safety, and maintenance costs. Statistics show that 30% of highway bridges nationwide have defective drainage systems, leading to structural defects (such as steel corrosion and bearing damage).

[0003] Currently, drainage systems for highway bridges consist of drainage ditches installed on both sides of the bridge deck. These ditches are topped with grating covers and have drain pipes at the bottom to direct water to the ground near the piers. This drainage system is simple in structure, inexpensive to construct, and highly efficient, making it widely used. However, existing drainage systems have the following shortcomings: (1) High risk of blockage and poor drainage effect: The grid cover and drainage pipe hole are easily blocked by fallen leaves and mud and sand. During the rainy season, water is easy to accumulate on the bridge surface, which will cause erosion of the bridge structure (such as beams, supports, piers, etc.), posing a great traffic safety hazard. Moreover, the cleaning cost is high, with an average annual dredging cost of over ¥120 / ㎡. (2) The drain pipe leads water to the ground near the foot of the pier, which can easily cause foundation erosion and, in severe cases, cause foundation collapse. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a highway bridge that facilitates drainage, which can overcome the shortcomings of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: A highway bridge designed for easy drainage includes a beam body and a concrete layer and an asphalt layer arranged sequentially on the beam body from bottom to top. Drainage ditches are provided on both sides of the beam body, and a filter layer is provided on the top of the drainage ditches. A water collection trough of a certain height is reserved above the filter layer. Multiple drainage holes are arranged at intervals along the length of the bridge on the filter layer. Filter plugs are provided in the drainage holes, and drain pipes are provided at the bottom of the drainage holes. The outlet end of the drain pipes extends to the pier foot and is connected to a collection pool.

[0006] Furthermore, the filter layer includes a steel mesh layer and a permeable pavement layer disposed on the steel mesh layer.

[0007] Furthermore, the permeable pavement layer is a porous asphalt layer or a porous concrete layer with a permeability ≥0.1cm / s.

[0008] Furthermore, the concrete layer and permeable pavement layer on the beam are integrally formed porous concrete structures, and the height of the water collection trough corresponds to the thickness of the asphalt layer.

[0009] Furthermore, the filter plug includes a plug body with water filtering holes, the bottom of the plug body is inserted into the water inlet of the drain pipe, and the top is provided with an upwardly protruding spherical mesh plug head.

[0010] Furthermore, the drain pipe includes several drain sub-pipes respectively connected to each drain hole and a main drain pipe interconnected with the drain sub-pipes, and the outlet end of the main drain pipe is connected to the collection tank.

[0011] Furthermore, the main drain pipe is arranged along the bottom side of the beam and is arranged inclined downwards along the direction of the collection pool.

[0012] Furthermore, the top of the collection pool is provided with a filter cover; an overflow port is provided on one side of the upper part of the collection pool, and the overflow port is connected to an overflow pipe extending to a distant ditch.

[0013] Furthermore, a waterproof layer is provided between the top surface of the beam and the concrete layer, and on the inner surface of the drainage ditch.

[0014] The beneficial effects disclosed in this utility model are: (1) This utility model has a simple structure, high construction convenience, short cycle and low construction cost. It improves the drainage structure of highway bridges. A filter layer consisting of a steel mesh layer and a permeable pavement layer is set in the drainage ditch of the highway bridge. It can effectively filter large particles such as fallen leaves and mud and avoid blockage of the drainage pipe. Combined with several filter plugs set on the filter layer, it can ensure good drainage effect. In addition, the large particles of impurities after filtration can be accumulated in the water accumulation trough at the top of the filter layer. Since the permeable pavement layer of the filter layer is a porous asphalt or concrete structure, it is very easy to clean and greatly reduces the cleaning cost. (2) Rainwater collection pools were added to the piers of highway bridges to enable rainwater recycling, which is green and environmentally friendly, and avoids foundation corrosion at the piers, thus improving the service life of the bridge.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 2 A schematic diagram of the cross-section structure.

[0017] In the diagram, 1. Beam; 2. Concrete layer; 3. Asphalt layer; 4. Drainage ditch; 5. Filter layer; 501. Reinforcing mesh layer; 502. Permeable pavement layer; 6. Water collection trough; 7. Filter plug; 701. Plug body; 702. Spherical mesh plug head; 8. Drainage pipe; 801. Drainage branch pipe; 802. Drainage main pipe; 9. Collection pool; 901. Filter cover plate; 902. Overflow outlet; 903. Overflow pipe; 10. Waterproof layer. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] Example 1 like Figures 1-3 As shown, a highway bridge with convenient drainage includes a beam body 1 and a concrete layer 2 and an asphalt layer 3 arranged sequentially from bottom to top on the beam body 1. Drainage ditches 4 are provided on both sides of the beam body 1. A filter layer 5 is provided on the top of the drainage ditches 4, and a water collection trough 6 of a certain height is reserved on the upper part of the filter layer 5. Multiple drainage holes are arranged at intervals along the length of the bridge on the filter layer 5. Filter plugs 7 are provided in the drainage holes. Drain pipes 8 are provided at the bottom of the drainage holes. The outlet end of the drain pipe 8 extends to the foot of the pier and is connected to the collection pool 9.

[0020] The filter layer 5 includes a steel mesh layer 501 and a permeable pavement layer 502 disposed on the steel mesh layer 501. The filter layer 5 ensures that the water on the bridge surface can be quickly discharged from the filter plug 7 and the permeable pavement layer 502 into the bottom of the drainage ditch 4, while large particles such as fallen leaves and silt are left in the water collection tank 6, which is not easy to clog the drain pipe and is easy to clean.

[0021] The permeable pavement layer 502 is a porous asphalt layer or a porous concrete layer with a permeability ≥0.1cm / s. Specifically, the concrete layer 2 on the beam 1 and the permeable pavement layer 502 are integrally formed porous concrete structures, and the height of the water collection trough 6 corresponds to the thickness of the asphalt layer 3, making construction more convenient and efficient. To prevent erosion of the beam 1, a waterproof layer 10 is provided on the top surface of the beam 1, between the concrete layer 2, and on the inner surface of the drainage ditch 4. When the bridge is flooded during heavy rain, the water that seeps into the concrete layer 2 will enter the drainage ditch 4 along the waterproof layer 10 and will eventually be discharged to the collection pool 9 by the drain pipe 8.

[0022] The filter plug 7 includes a plug body 701 with water filtration holes. The bottom of the plug body 701 is inserted into the water inlet of the drain pipe 8, and the top is provided with an upwardly protruding spherical mesh plug head 702. This structure can not only achieve drainage filtration, but also prevent large particles of impurities such as fallen leaves and mud from covering and clogging the spherical mesh plug head 702.

[0023] The drainage pipe 8 includes several drainage sub-pipes 801 connected to each drainage hole, and a main drainage pipe 802 interconnected with the drainage sub-pipes 801. The outlet end of the main drainage pipe 802 is connected to the collection tank 9. The main drainage pipe 802 is arranged along the bottom side of the beam, which facilitates installation and fixation and minimizes interference with the construction of surrounding facilities and the aesthetics of the bridge. The main drainage pipe 802 is arranged inclined downwards along the direction of the collection tank 9, which further facilitates the drainage of accumulated water.

[0024] The collection pool 9 can be installed on the ground or underground near the pier foot, depending on the actual construction conditions. The rainwater collected in the collection pool 9 can be used for irrigation of the greenery around the bridge, which is environmentally friendly. A filter cover 901 is provided on the top of the collection pool 9 to ensure safety and rainwater purification. An overflow port 902 is provided on one side of the upper part of the collection pool 9, and the overflow port 902 is connected to an overflow pipe 903 extending to a distant ditch. The overflow port 902 can drain excess rainwater and prevent water from overflowing the collection pool 9 and corroding the pier foot foundation.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A highway bridge facilitating drainage, comprising a beam body (1) and a concrete layer (2) and an asphalt layer (3) arranged on the beam body (1) in sequence from bottom to top, characterized in that, Drainage ditches (4) are provided on both sides of the beam (1). A filter layer (5) is provided on the top of the drainage ditch (4), and a water collection trough (6) of a certain height is reserved on the upper part of the filter layer (5). Multiple drainage holes are set at intervals along the length of the bridge on the filter layer (5). A filter plug (7) is provided in the drainage hole. A drain pipe (8) is provided at the bottom of the drainage hole. The outlet end of the drain pipe (8) extends to the foot of the pier and is connected to the collection pool (9).

2. The highway bridge with facilitated drainage according to claim 1, characterized in that, The filter layer (5) includes a steel mesh layer (501) and a permeable pavement layer (502) disposed on the steel mesh layer (501).

3. The highway bridge with facilitated drainage according to claim 2, characterized in that, The permeable pavement layer (502) is a porous asphalt layer or a porous concrete layer with a permeability ≥0.1cm / s.

4. The highway bridge with facilitated drainage according to claim 3, characterized in that, The concrete layer (2) on the beam (1) and the permeable pavement layer (502) are integrally formed porous concrete structures, and the height of the water collection trough (6) corresponds to the thickness of the asphalt layer (3).

5. The highway bridge with ease of drainage as claimed in claim 1 wherein, The filter plug (7) includes a plug body (701) with filter holes. The bottom of the plug body (701) is inserted into the inlet of the drain pipe (8), and the top is provided with an upwardly protruding spherical mesh plug head (702).

6. The highway bridge with facilitated drainage according to claim 1, characterized in that, The drain pipe (8) includes several drain pipes (801) that are respectively connected to each drain hole and a drain main pipe (802) that is connected to the drain pipes (801). The outlet end of the drain main pipe (802) is connected to the collection tank (9).

7. The highway bridge with facilitated drainage according to claim 6, characterized in that, The main drain pipe (802) is arranged along the bottom side of the beam and is arranged inclined downward along the direction of the collection pool (9).

8. The highway bridge with facilitated drainage according to claim 1, characterized in that, The collection pool (9) is provided with a filter cover plate (901) on the top; an overflow port (902) is provided on one side of the upper part of the collection pool (9), and the overflow port (902) is connected to an overflow pipe (903) extending to a distant ditch.

9. The highway bridge of easy water drainage according to any one of claims 1 to 8, characterized in that, A waterproof layer (10) is provided between the top surface of the beam (1) and the concrete layer (2), and on the inner surface of the drainage ditch (4).

Images