A sidewalk drainage structure and its combined drainage method with drainage curbs

Abstract

The invention discloses a sidewalk drainage structure and a combined drainage method with drainage curb stones. The sidewalk drainage structure is composed of permeable concrete and several permeable blind road bricks to form a permeable drainage surface layer. The permeable drainage base layer composed of block, second drainage block and graded crushed stone or crushed gravel, the first cement mortar leveling layer and the second cement mortar leveling layer are respectively laid under the permeable blind road brick and under the permeable drainage base layer, which are located in the first and second cement mortar leveling layers. The part below the second cement mortar leveling layer is provided with a concrete cushion, and the lower part of the concrete cushion is a compacted soil foundation. The sidewalk drainage structure provided by the invention has the characteristics of short infiltration path, simple structure, convenient construction, material saving, obvious economy, etc. In addition, the invention also provides a drainage curb stone structure, so that the sidewalk or the The road surface rainwater and the seepage rainwater in the square pedestrian path of the curb are directly introduced into the curb.

Description

technical field [0001] The invention belongs to the technical field of traffic infrastructure, and relates to a sidewalk drainage structure and a combined drainage method with drainage curb stones. Background technique [0002] In recent years, urban floods have frequently occurred in cities such as Beijing, Guangzhou, Wuhan, Nanjing, Shenzhen, and Chongqing. The water capacity continues to increase. Once the atmospheric water content reaches saturation and meets the rainfall conditions, heavy rainfall will occur; second, with the continuous advancement of the urbanization process, the area of ​​urban roads and squares is also increasing, resulting in a substantial increase in the impervious area. The infiltration of rainwater is reduced. Once encountering heavy rainfall or the rainy season lasts for a long time, it is very easy to cause the phenomenon that the discharge volume of the road drainage system is less than the flow of the road surface, resulting in a large amount...

AI Technical Summary

Problems solved by technology

At present, the sidewalks on both sides of the road mostly use 3-6cm permeable bricks + 2-3cm cement mortar or medium-coarse sand + 8-12cm C15 or C20 plain concrete + 10-15cm graded gravel to infiltrate and drain rainwater below the surface. Drainage, however, this kind of drainage structure has a certain effect when the rainfall is small and does not form runoff or the sidewalk and walkway have been soaked by rainwater. When it rains and the rainfall lasts for a long time, due to the long rainwater infiltration path of the existing sidewalk structure, most of the rainwater will directly flow into the carriageway in the form of runoff before infiltration, which increases the drainage pressure of the road surface and affects driving and transportation. Pedestrian safety; in addition, the current curbs on both sides of the sidewalk are mainly prefabricated concrete blocks or stone processing, and its structure and function are too single. Structure and method for drainage

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