CN101962936B - Viaduct drainage system - Google Patents

Abstract

The invention discloses a drainage system for an overhead bridge which comprises a running lane, a side pavement and curbstone arranged between the running lane and the side pavement, wherein the curbstone is provided with a through hole in which rainwater flows, a water collecting and draining channel extending along the longitudinal direction is arranged below the side pavement, and the water collecting and draining channel is connected with the through hole on the curbstone. The drainage system has the advantages of large water collecting and draining quantity, difficult blockage of drained water and high safety.

Description

Viaduct drainage system

technical field

The invention relates to a bridge deck drainage structure, in particular to a viaduct drainage system.

Background technique

The bridge deck drainage structure of traditional viaducts usually adopts a system of bridge deck water collection wells, drainage pipes, and ground collection wells. Water collection wells and drainage pipes are generally only installed at bridge piers and abutments, so that there are fewer bridge deck collection points for rainwater. , the amount of collection is less, and the diameter of the drainage pipe is small, the drainage pipe is easily blocked by larger debris, and maintenance and dredging are inconvenient; in addition, the drainage pipe is generally hung outside the pier structure, which is not only visually unsightly , In some special areas with high safety requirements, such as the section across the high-speed rail, due to the particularity of the crossing area, the installation of external drainage pipes may cause safety hazards due to aging, falling off, and blockage of the pipes.

Therefore, those skilled in the art are unanimously committed to developing a viaduct drainage system with large water collection and discharge capacity, difficult to block drainage, and high safety.

Contents of the invention

In view of the deficiencies in the above-mentioned prior art, the present invention provides a viaduct drainage system with large water collection and discharge capacity, low drainage blockage, and high safety.

In order to achieve the above object, the object of the present invention is to provide a viaduct drainage system, the viaduct includes a driveway, a sidewalk and side stones between the driveway and the sidewalk, the side stones are provided with through holes for rainwater to flow in, A water collection and drainage channel extending longitudinally along the sidewalk is arranged below the sidewalk, and the water collection and drainage channel communicates with the through holes on the side stones.

Further, at least one pad beam is provided below the sidewalk, the pad beam extends longitudinally along the sidewalk, and the water collection and drainage channel is formed between the side stones and the adjacent pad beams; preferably, The inner surface of the water collection and drainage channel is coated with waterproof paint.

Further, the bottom surface of the through hole on the side stone is set as a diversion slope arranged downward toward the water collection and drainage channel, so that rainwater can flow into the water collection and drainage channel faster through the through hole of the side stone.

Further, a water inlet grill is arranged in the through hole on the side stone to prevent the entry of garbage and sundries.

Further, the sidewalk is inclined downward along the direction from the edge of the viaduct to the side stone; preferably, the slope of the sidewalk along the direction from the edge of the viaduct to the side stone is 1%.

Further, the traffic lane is arranged inclined downward along the direction from the bridge deck centerline of the viaduct to the side stone; preferably, the traffic lane is arranged along the direction from the bridge deck centerline of the viaduct to the side stone The slope in the stone direction is 2%.

Further, the water collection and drainage channel is in communication with a drainage pipe arranged on the outer road surface of the abutment of the viaduct.

Compared with the prior art, the present invention has the following advantages:

1. The water collection well and drainage pipes on the bridge deck are cancelled, and the free space under the sidewalk is fully utilized as a channel for collecting and discharging rainwater on the bridge deck.

2. The rainwater on the bridge deck has been changed from the point-like collection at the pier to the longitudinal collection along the sidewalk on the bridge deck. The water collection and discharge volume have been greatly improved, and the drainage is not easy to block.

3. The external drainage pipes at each pier are canceled, and are only arranged on the road outside the abutment, which increases the aesthetics of the facade of the viaduct; at the same time, it avoids the safety hazards caused by the installation of external drainage pipes at the pier, which is suitable for It is used in cross-high-speed rail sections with high safety requirements.

4. Maintenance is more convenient. The water collection and drainage channel can be maintained only by removing the sidewalk cover covering it.

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Figure 2 is a cross-sectional view of the present invention.

Detailed ways

Figure 1 and Figure 2 show a preferred embodiment of the viaduct drainage system of the present invention. The viaduct includes a sidewalk 1 , a carriageway 2 and a side stone 4 between the sidewalk 1 and the carriageway 2 . The side stone 4 is provided with a through hole 41 for rainwater to flow in, and the sidewalk 1 is provided with a water collection and drainage channel 6 extending longitudinally along the sidewalk 1 , and the water collection and drainage channel 6 communicates with the through hole 41 on the side stone 4 . In a specific embodiment, the bottom surface of the through hole 41 on the side stone 4 is set as a diversion slope 7 inclined towards the water collection and drainage channel 6, so as to facilitate the rainwater flowing into the through hole 41 to quickly flow to the water collection and drainage channel 6 . In a specific embodiment, a water inlet grill 5 is arranged in the through hole 41 of the side stone 4 to prevent garbage and sundries from entering the water collection and drainage channel 6 .

Pad beams 3 are arranged below the sidewalk 1 , and the pad beams 3 extend longitudinally along the sidewalk 1 , and a water collection and drainage channel 6 is formed between side stones 4 and adjacent pad beams 3 . In a specific embodiment, the inner surface of the water collection and drainage channel 6 is coated with a waterproof paint layer 8 to prevent rainwater from seeping out.

The sidewalk 1 slopes downward along the direction from the edge of the viaduct to the side stone 4 . In this embodiment, the slope of the sidewalk 1 is 1%.

The carriageway 2 slopes downward along the direction from the bridge deck centerline of the viaduct to the side stone 4 . In the present embodiment, the slope of the carriageway 2 is 2%.

The water collection and drainage channel 6 communicates with the drainage pipe (not shown) arranged on the road outside the abutment of the viaduct.

In a specific embodiment, the road surface of the sidewalk 1 is spliced by a plurality of sidewalk cover plates 11 covering the water collection and drainage channel 6 .

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (4)

1. A viaduct drainage system, the viaduct comprises a driveway, a sidewalk and side stones between the driveway and the sidewalk, it is characterized in that: the side stones are provided with through holes for rainwater to flow in, and the sidewalk is provided below There is a water collection and drainage channel extending longitudinally along the sidewalk, and the water collection and drainage channel is connected with the through hole on the side stone; at least one pad beam is provided below the sidewalk, and the pad beam extends longitudinally along the sidewalk, The water collection and drainage channels are formed between the side stones and the adjacent pad beams; the sidewalk is inclined downward along the direction from the edge of the viaduct to the side stone; The slope from the edge of the viaduct to the direction of the side stones is 1%; the roadway is inclined downward along the direction from the bridge deck centerline of the viaduct to the side stones; the roadway is along the The gradient from the bridge deck centerline of the viaduct to the direction of the side stone is 2%; the water collection and drainage channel is connected with the drainage pipe arranged on the abutment outer road surface of the viaduct; The pavement is spliced by multiple sidewalk cover plates covering the water collection and drainage channels. 2. The viaduct drainage system according to claim 1, characterized in that: the inner surface of the water collection and drainage channel is coated with waterproof paint. 3. The viaduct drainage system according to claim 1, characterized in that: the bottom surface of the through hole on the side stone is set as a diversion slope arranged downwardly toward the water collection and drainage channel. 4. The viaduct drainage system according to claim 1, characterized in that: the through hole on the side stone is provided with a water inlet grill to prevent garbage and sundries from entering.

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