Sidewalk drainage structure and combined drainage method of sidewalk drainage structure and drainage kerbs

Abstract

The invention discloses a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and a drainage kerb. The sidewalk drainage structure is characterized in that permeable concrete and a plurality of permeable blind road bricks form a permeable drainage surface layer; a permeable drainage base layer composed of a plurality of first drainage building blocks, a plurality of second drainage building blocks and graded broken stones or broken gravels is arranged below the permeable concrete, and a first cement mortar leveling layer and a second cement mortar leveling layer are laid below the permeable blind road bricks and the permeable drainage base layer respectively. A concrete cushion layer is arranged at the part below the second cement mortar leveling layer, and a compacted soil foundation is arranged below the concrete cushion layer. The sidewalk drainage structure has the advantages of being short in infiltration path, simple in structure, convenient to construct, capable of saving materials, obvious in economical efficiency and the like, and in addition, the invention further provides a drainage kerb structure. Therefore, rainwater on the surface of a road in a sidewalk or a square footpath provided with kerbs and infiltrated rainwater are directly led into the kerbs.

Description

Technical field[0001]The present invention belongs to the technical field of traffic infrastructure, and involves a human sidewalk drainage structure and its combined drainage method with drainage rock.Background technique[0002]In recent years, urban flood disasters often occur in Beijing, Guangzhou, Wuhan, Nanjing, Shenzhen, Chongqing and other cities. The main reason is that it is affected by global warming, the temperature rise increases the water content of the atmosphere, the atmosphere The water capacity is constantly enhanced. Once the air-containing water is sufficient to meet the rainfall conditions, it will produce heavy rainfall; the second is to continue to advance with the urbanization process, urban roads and square area are also increasing, resulting in a large increase in the inflatable area, The reduction in rain is reduced. Once the heavy rainfall or the long-lasting duration is very easy to cause the drainage drainage system less than the traffic volume of the roa...

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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