Construction structure and construction method for road reconstruction and upgrading of sponge city

Abstract

The invention discloses a construction structure and a construction method for modifying and upgrading a road into a sponge city. The invention comprises a tree pool, a sidewalk, a non-motorized vehicle lane, a concave greenbelt, open kerbs, porous fiber cotton modules, seepage wells, grass planting ditches and rainwater gardens. The porous fiber cotton modules are arranged between the tree poolson the two sides of the sidewalk and the non-motorized vehicle lane; the seepage wells comprises rainwater wells, and rammed earth layers, gravel water purification layers and coarse sand layers which are sequentially arranged around the rainwater wells from bottom to top; an overflow pipe communicating with a catch basin is arranged in the middle of the catch basin; one end, not communicatingwith the catch basin, of the overflow pipe is connected with a municipal rainwater pipe network; a water guide pipe is arranged in a rammed earth layer, one end of the water guide pipe communicates with the porous cellucotton module, the other end of the water guide pipe communicates with the rainwater wells and provided with a stainless steel sewage intercepting cover, a rainwater garden is arranged on the sunken greenbelt, a blind pipe and an overflow well are arranged in the rainwater garden, the blind pipe communicates with the overflow well, and the overflow well is connected to a nearbymunicipal rainwater pipe network. According to the invention, the functions of unified storage, purification and discharge are realized.

Description

technical field [0001] The invention relates to the field of urban roads, in particular to a construction structure and construction method for road reconstruction and upgrading of sponge cities. Background technique [0002] "Sponge city" is a figurative metaphor, comparing the whole city to a "breathing" and "elastic" sponge. When it rains, the rainwater is absorbed and stored in the "sponge"; when water is needed, the "sponge" is squeezed to release the water, thereby realizing a virtuous cycle of water utilization. There are four main functions in building a sponge city, which can enhance urban drainage Waterlogging prevention ability, effective reduction of rainwater runoff pollution, promotion of rainwater resources utilization, mitigation of urban heat island effect. Through the absorption and storage of "sponge bodies" such as green spaces, artificial wetlands, rain gardens, and roof gardens, the time of rainwater discharge can be delayed, the total amount of storm ...

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Problems solved by technology

[0003] At present, the road drainage system generally adopts the unified deployment and drainage method of traditional rainwater pipes, rainwater canals, pumping stations, etc. Among them, the rainwater pipes and rainwater canal facilities are hard facilities. Once completed, it is difficult to change their overall structure and direction. The construction is difficult, and the key is the lack of "elastic" ability to deal with heavy rainfall weather. The municipal roads in the central urban area are renovated and upgraded to sponge cities. Sponge city facilities can achieve the purpose of improving the original design drainage standard and removing rainwater from the road surface, and solve the problems of urban road waterlogging and heat island effect from the root, so as to achieve the effect of balanced discharge and storage of rainwater, and build a new type of town with sustainable development

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