Longitudinal drainage structure of bridge deck

Abstract

The utility model relates to the technical field of drainage facilities, in particular to a longitudinal drainage structure of a bridge deck. The drainage smoothness is guaranteed, meanwhile, small-particle stones and the like are intercepted in a centralized mode, the blockage condition of a drainage pipeline is reduced, and meanwhile the cleaning convenience of the small-particle stones is improved; comprising a sewage collecting pool, a first communicating pipe, a vertical drainage pipe and a water collecting tank arranged in the longitudinal direction of a bridge, a rainwater grate is laid on the water collecting tank, one end of the first communicating pipe extends into the upper portion in the sewage collecting pool, and the other end of the first communicating pipe extends into the water collecting tank; the top of the vertical drainage pipe extends into the sewage collecting pool from the bottom of the sewage collecting pool, a cover cap is installed on the top of the vertical drainage pipe, the inner diameter of the cover cap is larger than the outer diameter of the vertical drainage pipe, the bottom of the cover cap is lower than the top of the vertical drainage pipe, and an annular inflow channel is formed between the inner wall of the cover cap and the outer wall of the vertical drainage pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drainage facilities, in particular to a bridge deck longitudinal drainage structure. BACKGROUND

[0002] It is known that, in order to quickly remove the water on the bridge deck, prevent rainwater from accumulating on the bridge deck and seeping into the beam to affect the durability of the bridge, when the bridge is designed, a longitudinal and transverse slope drainage system needs to be arranged on the bridge deck, the transverse slope drainage mainly relies on the slope angle of the bridge deck to realize the drainage of rainwater into the longitudinal drainage system on both sides, and the longitudinal drainage system collects and then concentrates the drainage of rainwater.

[0003] A bridge longitudinal drainage device is disclosed in Chinese utility model patent CN206768592U, which comprises a longitudinal drainage pipe embedded in the bottom of the bridge guardrail, a plurality of downwardly inclined water collection grooves are arranged on the bridge deck pavement near the longitudinal drainage pipe, the water collection grooves are connected in communication with the longitudinal drainage pipe through transverse connecting pipes, and a grating plate is arranged at the water inlet of the transverse connecting pipe. In order to facilitate the collection of rainwater, the water collection groove is a horn-shaped structure with a large inlet and a small outlet. In order to avoid the accumulation of water in the water collection groove, the lowest point of the water collection groove is not lower than the lowest point of the transverse connecting pipe. In order to facilitate replacement, the grating plate is screwed on the vertical surface of the bridge guardrail.

[0004] However, when this device is implemented, the following defects are found: although the grating plate can filter and retain debris such as gravel and fallen leaves, part of the small particles of gravel or fallen leaves still enter the pipe, which can easily cause the pipe to be blocked; in order to reduce the entry of small particles, the aperture of the grating plate needs to be reduced at the same time, thereby affecting the smoothness of rainwater drainage, easily causing water on the bridge deck, and having certain use limitations. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a bridge deck longitudinal drainage structure which can ensure smooth drainage, centrally retain small particles of gravel, reduce the occurrence of drainage pipe blockage, and improve the convenience of cleaning small particles of gravel.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a bridge deck longitudinal drainage structure, including the sump, first communication pipe, vertical drainage pipe and along the longitudinal arrangement of the bridge water collecting tank, the water collecting tank is paved with the rainwater grate, one end of first communication pipe is inserted to the upper portion in the sump, the other end of first communication pipe is inserted to the water collecting tank, the top of vertical drainage pipe is inserted to the sump from the bottom of sump, the top of vertical drainage pipe is installed with the cap, the inner diameter of cap is greater than the outer diameter of vertical drainage pipe, the bottom of cap is lower than the top of vertical drainage pipe, annular inflow passage is formed between the inner wall of cap and the outer wall of vertical drainage pipe, further, the height of the communication of first communication pipe and sump is at least 0.4m higher than the top of cap.

[0009] Preferably, the water collecting tank is two groups, and the two groups of water collecting tanks are symmetrically arranged on the two sides of the sump.

[0010] Preferably, the vertical drainage pipe is installed with a Venturi tube and a second communication pipe, one end of the second communication pipe is inserted into the throat pipe part on the Venturi tube, the other end of the second communication pipe is inserted into the water collecting tank from the bottom of the water collecting tank near the side of the sump, and the communication of the first communication pipe and the water collecting tank is higher than the communication of the second communication pipe and the water collecting tank.

[0011] Preferably, the water inlet port of the second communication pipe is flush with the inner bottom wall of the water collecting tank, and the water inlet end of the second communication pipe is installed with a floor drain.

[0012] Preferably, the end of the inner bottom wall of the water collecting tank away from the sump is higher than the end of the inner wall of the water collecting tank close to the sump.

[0013] Preferably, the inner wall of the sump is fixedly installed with a support frame, the support frame is placed with a filter basket, the middle part of the filter basket is fixedly installed with a lifting rod, and the top of the sump is hingedly installed with a cover allowing water flow; further, the cover can adopt a hollow cover, a grating cover or a railing type cover, so that part of the rainwater directly enters the sump through the upper port of the sump, and the filter basket is lower than the communication of the first communication pipe and the sump.

[0014] Preferably, the cap is provided with a conical shell part, the top of the conical shell part is provided with a horizontal table, and the top of the horizontal table is in close contact with the bottom of the filter basket; further, the cap is located below the middle part of the filter basket.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the bridge deck longitudinal drainage structure has the following beneficial effects: the bridge deck longitudinal drainage structure can concentrate and collect the bridge deck transverse rainwater through the water collecting groove, the rainwater in the water collecting groove is settled in the pollution collecting pool through the first communicating pipe, the small particles in the rainwater are concentrated and settled at the bottom of the pollution collecting pool under the action of gravity, when the liquid level in the pollution collecting pool is higher than the top of the vertical drainage pipe, the sewage in the pollution collecting pool flows into the vertical drainage pipe through the annular inflow channel and forms a siphon effect, and the accumulated water in the pollution collecting pool is sucked into the vertical drainage pipe and then discharged, which ensures the smoothness of drainage and concentrates and intercepts small particles and the like, thereby reducing the occurrence of drainage pipe blockage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 is a top view structure schematic diagram of the utility model;

[0019] Figure 3 is a Figure 2 sectional structure schematic diagram of the utility model at A-A;

[0020] Figure 4 is a Figure 3 schematic diagram of the utility model at B local amplification structure;

[0021] Figure 5 is a Figure 3 schematic diagram of the utility model at C local amplification structure;

[0022] Mark in the drawing: 1, pollution collecting pool; 2, first communicating pipe; 3, vertical drainage pipe; 4, water collecting groove; 5, rainwater grate; 6, cover cap; 7, venturi; 8, second communicating pipe; 9, floor drain; 10, support frame; 11, filter basket; 12, lifting rod; 13, cover; 14, conical shell part; 15, horizontal support table. DETAILED DESCRIPTION

[0023] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0024] The bridge longitudinal drainage device as described in the background art; although the grate plate can filter and intercept debris such as gravel and fallen leaves, part of the small particle gravel or fallen leaves still enters the pipeline inside, which is easy to cause the pipeline to be blocked; in order to reduce the entry of small particles, the aperture on the grate plate needs to be reduced synchronously, thereby affecting the smoothness of rainwater drainage, which is easy to cause bridge ponding, and has certain use limitations.

[0025] In order to solve the technical problem, the utility model provides a bridge deck longitudinal drainage structure which is applied to bridge deck drainage.

[0026] It should be noted that the embodiments and the features and technical solutions in the embodiments in the utility model can be combined with each other without conflict.

[0027] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0028] Embodiment 1

[0029] Please refer to Figures 1-3 A bridge deck longitudinal drainage structure, which specifically comprises: a sump 1, a first communication pipe 2, a vertical drainage pipe 3 and a water collecting tank 4 arranged along the longitudinal direction of the bridge, a rainwater grate 5 is laid on the water collecting tank 4, one end of the first communication pipe 2 extends into the upper part of the sump 1, the other end of the first communication pipe 2 extends into the water collecting tank 4, the top of the vertical drainage pipe 3 extends into the sump 1 from the bottom of the sump 1, a cap 6 is installed on the top of the vertical drainage pipe 3, the inner diameter of the cap 6 is larger than the outer diameter of the vertical drainage pipe 3, the bottom of the cap 6 is lower than the top of the vertical drainage pipe 3, and an annular inflow channel is formed between the inner wall of the cap 6 and the outer wall of the vertical drainage pipe 3; further, the height of the communication part of the first communication pipe 2 and the sump 1 is at least 0.4m higher than the top of the cap 6.

[0030] Specifically, please refer to Figure 3 And Figure 5 A support frame 10 is fixedly installed on the inner wall of the sump 1, a filter basket 11 is placed at the support frame 10, a lifting rod 12 is fixedly installed in the middle of the filter basket 11, and a cover 13 allowing water flow is hingedly installed on the top of the sump 1; further, the cover 13 can adopt a hollow cover, a grating cover or a railing type cover, so that part of the rainwater directly enters the sump 1 through the upper port of the sump 1 through the cover 13, and the filter basket 11 is lower than the communication part of the first communication pipe 2 and the sump 1.

[0031] Specifically, the cap 6 is provided with a conical shell part 14, the top of the conical shell part 14 is provided with a horizontal table 15, and the top of the horizontal table 15 is in close contact with the bottom of the filter basket 11; further, the cap 6 is located below the middle part of the filter basket 11.

[0032] The bridge deck longitudinal drainage structure provided by the embodiment can filter the rainwater entering the sump 1 to reduce the falling leaves or particles in the rainwater from entering the sump 1. When the filter basket 11 is full of the filtered materials, the cover 13 is opened, and the operator holds the lifting rod 12 to remove the filter basket 11 from the sump 1 to clean the filtered materials, thereby providing the convenience of operation. The particles passing through the filter basket 11 contact the cover cap 6, and the particles can be prevented from directly falling into the vertical drainage pipe 3 under the action of the cover cap 6. When the particles contact the conical shell part 14 on the cover cap 6, the particles slide along the conical shell part 14 under the action of gravity and water flow, so that the particles are concentrated to fall on the inner wall of the sump 1 away from the vertical drainage pipe 3, thereby reducing the particles from sinking near the vertical drainage pipe 3, and reducing the particles from being sucked into the vertical drainage pipe 3 by the siphon flow. The horizontal support table 15 can support the bottom of the filter basket 11 to prevent the middle of the filter basket 11 from being concave after bearing too much filtered material.

[0033] Embodiment 2

[0034] The bridge deck longitudinal drainage structure provided by the embodiment is further optimized, and specific reference can be made to Figure 1 or Figure 2 The water collecting groove 4 is two groups, and the two groups of water collecting grooves 4 are symmetrically arranged on the two sides of the sump 1.

[0035] Specific reference can be made to Figure 3 The vertical drainage pipe 3 is provided with a Venturi tube 7 and a second communication pipe 8. One end of the second communication pipe 8 extends into the throat pipe part of the Venturi tube 7, and the other end of the second communication pipe 8 extends into the water collecting groove 4 near one side of the sump 1 from the inner bottom of the water collecting groove 4. Further, the communication part of the first communication pipe 2 and the water collecting groove 4 is higher than the communication part of the second communication pipe 8 and the water collecting groove 4.

[0036] Specifically, the water inlet port of the second communication pipe 8 is flush with the inner bottom wall of the water collecting groove 4, and the water inlet end of the second communication pipe 8 is provided with a floor drain 9.

[0037] Specifically, the end of the inner bottom wall of the water collecting groove 4 away from the sump 1 is higher than the end of the inner wall of the water collecting groove 4 near the sump 1.

[0038] The bridge deck longitudinal drainage structure provided by the embodiment can improve the water collecting area of the drainage mechanism in the longitudinal direction of the bridge deck, thereby facilitating the rainwater drainage on the bridge deck; the rainwater collected in the two water collecting tanks 4 is concentrated and drained out through the vertical drainage pipe 3 by the sump 1, so that there is sufficient flow in the vertical drainage pipe 3; when the water flows through the Venturi tube 7, negative pressure is generated at the throat of the Venturi tube 7, and the accumulated water in the water collecting tank 4 can be sucked into the vertical drainage pipe 3 through the second communication pipe 8, so as to reduce the excessive accumulation of rainwater in the water collecting tank 4, avoid the rainwater overflowing the top of the water collecting tank 4, and improve the smoothness of the drainage of the water collecting tank 4; the floor drain 9 can filter the water flow entering the second communication pipe 8, so as to reduce the particles entering the Venturi tube 7; the bottom wall of the water collecting tank 4 is inclined to the sump 1 at a certain slope angle, so that the particles and the like are gathered near the sump 1, so that the particles in the water collecting tank 4 can be conveniently cleaned by the operator, and the residual rainwater in the water collecting tank 4 is reduced.

[0039] The use process of the bridge deck longitudinal drainage structure is as follows: the transverse rainwater on the bridge deck is collected by the water collecting tank 4, the rainwater in the water collecting tank 4 is settled in the sump 1 through the first communication pipe 2, the small particles in the rainwater are settled at the bottom of the sump 1 under the action of gravity, when the liquid level in the sump 1 is higher than the top of the vertical drainage pipe 3, the sewage in the sump 1 flows into the vertical drainage pipe 3 through the annular inflow passage and forms a siphon effect, and the accumulated water in the sump 1 is sucked into the vertical drainage pipe 3 and then drained out.

[0040] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and the like terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electric connection or can communicate with each other; can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction relationship of two elements inside two elements, unless another definite limitation. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model in specific circumstances.

[0041] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A bridge deck longitudinal drainage structure, characterized by, The utility model relates to a rainwater collecting device for bridge, including collecting pool (1), first communication pipe (2), vertical drainage pipe (3) and water collecting tank (4) along the longitudinal arrangement of bridge, water collecting tank (4) is paved with rainwater grate (5) on, one end of first communication pipe (2) extends into to the upper portion in collecting pool (1), the other end of first communication pipe (2) extends into to water collecting tank (4), the top of vertical drainage pipe (3) from the bottom of collecting pool (1) extends into to collecting pool (1), the top of vertical drainage pipe (3) is equipped with cover cap (6), the inner diameter of cover cap (6) is greater than the outer diameter of vertical drainage pipe (3), the bottom of cover cap (6) is lower than the top of vertical drainage pipe (3), the annular inflow passage is formed between the inner wall of cover cap (6) and the outer wall of vertical drainage pipe (3).

2. The bridge deck longitudinal drainage structure according to claim 1, characterized in that, Water collecting tank (4) is two groups, and two groups of water collecting tank (4) are arranged on the both sides of collecting pool (1) symmetrically.

3. The bridge deck longitudinal drainage structure according to claim 2, characterized in that, Vertical drainage pipe (3) is equipped with venturi tube (7) and second communication pipe (8), one end of second communication pipe (8) extends into to the throat pipe portion on venturi tube (7), the other end of second communication pipe (8) extends into to water collecting tank (4) from the bottom in water collecting tank (4) near the side of collecting pool (1).

4. The bridge deck longitudinal drainage structure according to claim 3, characterized in that, The water inlet port of second communication pipe (8) is flush with the inner bottom wall of water collecting tank (4), and floor drain (9) is installed on the water inlet end of second communication pipe (8).

5. The bridge deck longitudinal drainage structure according to claim 2, characterized in that, The end of the inner bottom wall of water collecting tank (4) away from collecting pool (1) is higher than the end of the inner wall of water collecting tank (4) near collecting pool (1).

6. The bridge deck longitudinal drainage structure according to claim 1, characterized in that, Support frame (10) is fixedly installed on the inner wall of collecting pool (1), filter basket (11) is placed in support frame (10), lifting rod (12) is fixedly installed in the middle of filter basket (11), and cover (13) allowing water flow is hingedly installed on the top of collecting pool (1).

7. The bridge deck longitudinal drainage structure according to claim 6, characterized in that Conical shell portion (14) is arranged on cover cap (6), horizontal support table (15) is arranged on the top of conical shell portion (14), and the bottom of filter basket (11) is in close contact with the top of horizontal support table (15).

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