CN209958218U - Anti-blocking water collecting structure of box girder bridge - Google Patents

Abstract

The utility model discloses a block-proof water collecting structure of a box girder bridge, which comprises a water collecting tank arranged on the bridge floor at the position of a pier column, wherein the side wall of the water collecting tank connected with an anti-collision wall is a non-permeable side wall, and the rest part of the side wall of the water collecting tank is a permeable side wall; the permeable side wall of the water receiving tank is uniformly provided with permeable holes for water permeation; the water receiving tank is fixedly connected with a water outlet pipe downwards, the water outlet pipe downwards penetrates through a wing plate of the bridge body of the box girder, a water outlet pipe is fixed on the bridge body below the water outlet pipe, the upper end of the water outlet pipe is connected with a horn-shaped water receiving port, and the water receiving port is positioned right below the water outlet pipe and is arranged at an interval with the water outlet pipe; the lower end of the drain pipe is communicated with a water collecting well; the top wall of the water receiving tank is made of a water permeable material. The utility model discloses can prevent that the bridge floor from receiving the water structure and blockked up by debris to prevent bridge floor ponding when the drain pipe takes place to block up.

Description

Anti-blocking and water-receiving structure of box girder bridge

technical field

The utility model relates to the technical field of bridge construction.

Background technique

With the development of society, the construction of various infrastructures in my country has become more and more perfect, and a large number of bridges, such as viaducts, are constructed every year.

In bridge construction, box girder has been widely used because of its fast construction speed, prefabrication and cast-in-place, and wide application range. Asphalt surface layer is paved on the surface of the box girder as the bridge deck. The bridge deck at each pier column of the bridge is provided with a water collection well, and the water collection well is connected downward with a drain pipe. .

The existing long box girder bridge is composed of multi-connected beam bodies, and expansion joints are arranged between adjacent beam bodies. The inside of the box girder is hollow, with wings on both sides of the upper part.

The water collection and drainage structure of the existing bridge is relatively simple, and the water collection and drainage structures are arranged at each pier column; Bridge or lateral.

The existing bridge water collection and drainage structure has the following shortcomings:

1. The blockage problem of the water collection and drainage structure cannot be solved. The existing water collection and drainage structures all have a water collection structure with an open top on the bridge deck (a water collection tank or a water collection well or a long strip of water collection ditch). Whether it is debris brought to the bridge deck by the wind, or debris scattered by passing vehicles, it is not easy to be blown away after being blown off by the airflow.

The air flow is easy to blow the debris on the road surface, but after the debris enters the structure lower than the road surface, the air flow at the road surface cannot reach the debris or can only blow the debris to expose a small part of the road surface, and the debris still remains. It is stuck by the structure lower than the road surface. After a long time, more debris will accumulate in the water collection structure, forming a blockage. It needs manual cleaning to restore the normal water collection and drainage function. On the one hand, it increases the maintenance workload of the bridge. On the other hand, during the blockage period, the phenomenon of the bridge deck being soaked in water will be aggravated, and the service life of the bridge deck will be shortened.

In the water collection and drainage structure, the drainage pipe is more likely to block and fall off. Because the collection and drainage structure does not have the ability to automatically flush the silt in the collection tank, the silt directly enters the drainage pipe attached to the bottom of the bridge body, and the drainage pipe is mostly connected with PVC pipe and the bridge body by rivets. The load-bearing capacity is relatively poor, so once the silt congestion occurs, the water storage in the pipeline will increase, causing the pipeline to fall off.

2. The rainwater on the bridge deck is directly discharged into the rainwater cellar connected to the municipal pipe network through the buried pipeline. The green belt under the bridge has no chance to absorb rainwater. It is necessary to water the green belt separately to increase the water demand of the green belt. Meet the requirements of building a sponge city.

Utility model content

The purpose of the utility model is to provide a box girder bridge anti-blocking water collection structure, which can prevent the bridge deck water collection structure from being blocked by sundries, and prevent the bridge surface water from being blocked when the drainage pipe is blocked.

In order to achieve the above purpose, the utility model provides an anti-blocking and water-receiving structure for a box girder bridge. Anti-collision walls are provided on the lateral sides of the bridge deck of the box girder bridge; The bridge pier column, the bridge deck of the box girder bridge is paved with asphalt surface layer; there is a green belt under the box girder bridge, and there is a water collecting well in the green belt;

The anti-blocking water-receiving structure of the box girder bridge of the utility model comprises a water-receiving tank arranged on the bridge deck at the pier column; The water-permeable sidewall, the rest of the sidewall of the water-collecting box is the water-permeable sidewall; the water-permeable sidewall of the water-collecting box is evenly provided with water seepage holes for water penetration; the water-collecting box is fixedly connected downward with a water outlet pipe, and the water outlet pipe goes down through the box beam On the wing plate of the bridge body, the beam body below the water outlet pipe is fixed with a drain pipe, and the upper end of the drain pipe is connected with a trumpet-shaped water receiving port, and the water receiving port is located directly below the water outlet pipe and is spaced from the water outlet pipe; the drainage pipe is along the side of the beam body. The wall extends to the pier column and extends downward along the pier column, and the lower end of the drain pipe leads into the water collecting well; the top wall of the water collecting tank is made of permeable material, and the asphalt surface layer is laid on the top thereof.

The diameter of the seepage hole is 1.5±0.3 cm.

The bottom of the water collection well is more than 50 cm below the soil surface in the green belt, the top of the water collection well is 10 ± 2 cm above the soil surface in the green belt, and the surface of the green belt within 1 meter around the water collection well is provided with 10 ± 1 cm. A thick layer of crushed stone; the wall of the catchment well is made of water-permeable material.

The upper surface of the beam body at the water collecting tank is provided with a groove with a depth of 1.5 cm in a chiseled manner, and the bottom surface of the water collecting tank and the groove bottom of the groove are fixed together by epoxy glue or structural glue.

The diameter of the upper end of the water inlet is larger than the diameter of the lower end of the water outlet pipe, and the vertical centerlines of the two are the same straight line.

When it rains, the water on the bridge deck quickly flows to the water tank of the anti-collision wall on the lower side of the bridge deck under the action of the slope, and the rainwater is quickly discharged. Because the asphalt surface layer has water permeability, on the one hand, rainwater flows along the surface of the asphalt surface layer to the crash wall, and on the other hand, the rainwater leaking into the asphalt surface layer flows along the interior of the asphalt surface layer to the crash wall. The rainwater on the asphalt surface layer must be filtered by the asphalt surface layer before entering the water collection tank, so the sundries on the bridge deck will be blocked by the asphalt surface layer and cannot enter the water collection tank, leaving the sundries above the asphalt surface layer in the airflow (such as natural It will be easily blown away under the action of wind and the airflow brought by passing vehicles, and will not block the water collection channel in a concentrated manner.

The water in the collection tank is drained down the drain pipe into the collection well. In the past practice, the drainage pipe is prone to blockage. After the blockage occurs, the rainwater on the bridge deck cannot flow down normally, resulting in water on the bridge surface.

In the utility model, the water receiving port is located just below the water outlet pipe and is spaced from the water outlet pipe. The diameter of the upper end of the trumpet-shaped water receiving port is larger than that of the water outlet pipe, which ensures that the water flowing out of the water outlet pipe just falls into the water receiving port, and deviation or omission is not easy to occur.

When the drain pipe is blocked, the bridge area water will flow out from the gap between the water outlet pipe and the water inlet and fall down, avoiding the bridge area water caused by the blockage of the drain pipe.

The bottom of the water collection well is more than 50 cm below the soil surface in the green belt, and the top of the water collection well is 10 ± 2 cm above the soil surface in the green belt, which can play a role in water storage. After rain, water will be stored in the water collection well The top of the water collecting well is provided with a grid net to prevent falling and overflow of debris. After preliminary precipitation, filtration and collection in the well, it can slowly overflow and penetrate into the green belt, and the overflowing water is filtered through the gravel around the water collecting well. The belt can form secondary filtration, sedimentation, infiltration and buffering for the water collection, and at the same time avoid the direct scouring of the surrounding soil and plants by the flowing water. Therefore, the nearby green belt can be kept in a moist state for a long time, and the irrigation water consumption of the green belt can be reduced, which is in line with the concept of sponge city.

The upper surface of the beam body at the water collecting box is provided with a groove with a depth of 1.5 cm in a chiseled manner, and the bottom surface of the water collecting box and the groove bottom of the groove are bonded and fixed together by epoxy glue or structural glue. This method is not only convenient for construction, but also makes the connection between the water collecting tank and the box beam very firm, and will not fall off after long-term use. At the same time, the problem of water accumulation at the junction between the bottom of the water collecting tank and the bottom of the buried water channel is solved.

Description of drawings

Fig. 1 is the structural representation that the utility model is installed on the box girder bridge;

Fig. 2 is the enlarged view of A place in Fig. 1;

Fig. 3 is the vertical cross-sectional schematic diagram of the water collecting tank along the bridge;

Figure 4 is a schematic diagram of the vertical structure at the water collecting well.

Detailed ways

In the present invention, the length direction of the bridge is referred to as the longitudinal direction or the longitudinal direction, and the width direction of the bridge is referred to as the transverse direction or the transverse direction.

As shown in Figures 1 to 4, the present utility model provides a box girder bridge anti-blocking and water collection structure. Anti-collision walls 2 are provided on both sides of the lateral side of the box girder bridge; A number of pier columns 3 are arranged at intervals, and the deck of the box girder bridge is paved with an asphalt surface layer 1; a green belt 4 is arranged under the box girder bridge, and a water collecting well 5 is arranged in the green belt 4;

The box girder bridge anti-blocking water-receiving structure of the present invention includes a water-receiving tank 6 arranged on the bridge deck at the pier column 3, one side of the water-receiving tank 6 is connected with the anti-collision wall 2, and the water-receiving tank 6 is connected with the anti-collision wall 2 The connected side wall is a non-permeable side wall, and the rest of the side wall of the water collection box 6 is a water permeable side wall; the water permeable side wall of the water collection box 6 is evenly provided with water seepage holes 7 for water penetration; The water pipe 8 and the water outlet pipe 8 pass downward through the wing plate 10 of the box girder bridge body 9. The beam body 9 below the water outlet pipe 8 is fixed with a drainage pipe 11, and the upper end of the drainage pipe 11 is connected with a trumpet-shaped water receiving port 12. The water receiving port 12 is located directly below the water outlet pipe 8 and is spaced from the water outlet pipe 8; the drain pipe 11 extends along the side wall of the beam body 9 (including the wing plate 10 of the beam 9) to the pier column 3, and extends downward along the pier column 3, The lower end of the drain pipe 11 leads into the water collecting well 5; the top wall of the water collecting tank 6 is made of permeable material, and the asphalt surface layer 1 is laid on the top thereof. In this way, the upper end of the water collecting tank 6 is prevented from being opened, and the rainwater on the bridge deck must be filtered by the asphalt surface layer 1 before entering the water collecting tank 6 , and the sundries on the bridge deck cannot enter the water collecting tank 6 . The figure does not show the structure at the top wall of the water collecting tank 6 in detail.

The diameter of the water seepage hole 7 is 1.5±0.3 cm.

The bottom end of the water collection well 5 is more than 50 cm below the soil surface in the green belt 4, the top of the water collection well 5 is 10±2 cm higher than the soil surface in the green belt 4, and the surface layer of the green belt 4 within 1 meter around the water collection well 5 A gravel layer 14 with a thickness of 10±1 cm is provided; the well wall of the water collecting well 5 is made of water permeable material.

The upper surface of the beam body 9 at the water collecting box 6 is provided with a groove 13 with a depth of 1.5 cm in a chiseled manner. The bottom surface of the water collecting box 6 and the bottom of the groove 13 are fixed together by epoxy glue or structural glue.

The diameter of the upper end of the water inlet 12 is larger than the diameter of the lower end of the water outlet pipe 8 and the vertical centerlines of the two are the same straight line.

This ensures that the water flowing out of the water outlet pipe 8 just falls into the water inlet 12 without deviation or omission.

The upper surface of the beam body 9 at the water collecting box 6 is provided with a groove 13 with a depth of 1.5 cm in a chiseled manner, and the bottom surface of the water collecting box 6 and the bottom of the groove 13 are bonded and fixed on the bottom of the groove 13 by epoxy glue or structural glue. Together. This method is not only convenient for construction, but also makes the connection between the water collecting tank 6 and the box beam very firm, and will not fall off after long-term use.

When it rains, the water of the bridge deck flows to the crash wall 2 on the lower side of the bridge deck under the action of the slope. Since the asphalt surface layer 1 has water permeability, on the one hand, rainwater flows along the surface of the asphalt surface layer 1 to the crash wall 2, and on the other hand, the rainwater leaking into the asphalt surface layer 1 flows toward the crash wall 2 along the interior of the asphalt surface layer 1. Flow, and finally all the water enters the water collection tank 6 after passing through the asphalt surface layer 1 to be discharged.

Since the water first passes through the asphalt surface layer 1 and then enters the water collection tank 6, the asphalt surface layer 1 has the effect of filtering debris, and the debris blocked on the surface of the asphalt surface layer 1 can be driven by natural wind and the airflow driven by passing vehicles. It is blown away, so it is difficult for the water collecting and draining structure of the present invention to be blocked.

The bottom of the water collection well 5 is more than 50 cm below the soil surface in the green belt 4, and the top of the water collection well 5 is 10±2 cm higher than the soil surface in the green belt 4, which can play the role of water storage. The water in the water collecting well 5 can slowly seep into the green belt 4, so that the nearby green belt 4 can be kept in a moist state for a long period of time, which reduces the irrigation water consumption of the green belt 4, and conforms to the concept of sponge city.

When the drain pipe 11 is blocked, the bridge area water will flow out from the gap between the water outlet pipe 8 and the water receiving port 12 and fall down, so as to avoid the bridge area water caused by the blockage of the drain pipe 11 .

The above embodiments are only used to illustrate rather than limit the technical solutions of the present utility model, although the present utility model has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: the present utility model can still be modified or equivalently replaced, Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (5)

1. The anti-blocking water collection structure of the box girder bridge is characterized in that anti-collision walls are upwards arranged on two transverse sides of a bridge deck of the box girder bridge; a plurality of pier columns are arranged below the box girder bridge at intervals along the bridge direction, and an asphalt surface layer is paved on the bridge surface of the box girder bridge; a green belt is arranged below the box girder bridge, and a water collecting well is arranged in the green belt;

the method is characterized in that:

the bridge comprises a water receiving tank arranged on a bridge floor at a pier column, wherein one side of the water receiving tank is connected with an anti-collision wall, the side wall of the water receiving tank connected with the anti-collision wall is a non-permeable side wall, and the rest part of the side wall of the water receiving tank is a permeable side wall; the permeable side wall of the water receiving tank is uniformly provided with permeable holes for water permeation; the water receiving tank is fixedly connected with a water outlet pipe downwards, the water outlet pipe downwards penetrates through a wing plate of the bridge body of the box girder, a water outlet pipe is fixed on the bridge body below the water outlet pipe, the upper end of the water outlet pipe is connected with a horn-shaped water receiving port, and the water receiving port is positioned right below the water outlet pipe and is arranged at an interval with the water outlet pipe; the drainage pipe extends to the bridge pier column along the side wall of the beam body and extends downwards along the bridge pier column, and the lower end of the drainage pipe is communicated with the water collecting well; the top wall of the water collecting tank is made of a water permeable material, and the top of the water collecting tank is paved with the asphalt surface layer;

the diameter of the upper end of the horn-shaped water receiving opening is larger than that of the water outlet pipe.

2. The anti-blocking water collection structure of the box girder bridge according to claim 1, wherein: the diameter of the water seepage hole is 1.5 +/-0.3 cm.

3. The anti-blocking water collection structure of the box girder bridge according to claim 1, wherein: the bottom end of the water collecting well is lower than the surface of the soil body in the green belt by more than 50 cm, the top end of the water collecting well is higher than the surface of the soil body in the green belt by 10 +/-2 cm, and a crushed stone layer with the thickness of 10 +/-1 cm is arranged on the surface layer of the green belt within 1 m of the periphery of the water collecting well; the wall of the water collecting well is made of water seepage materials.

4. The anti-blocking water collection structure of a box girder bridge according to any one of claims 1 to 3, wherein:

the upper surface of the beam body at the water collecting tank is provided with a groove with the depth of 1.5 cm in a chiseling mode, and the bottom surface of the water collecting tank is fixedly bonded with the bottom of the groove through epoxy glue or structural glue.

5. The anti-blocking water collection structure of a box girder bridge according to any one of claims 1 to 3, wherein: the diameter of the upper end of the water receiving port is larger than that of the lower end of the water outlet pipe, and the vertical center lines of the water receiving port and the water outlet pipe are the same straight line.

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