A sponge city permeable pavement suitable for prefabricated roadbed

Abstract

The invention relates to the technical field of road and city street building, in particular to a sponge city water permeable laid road surface suitable for a fabricated roadbed. The road surface sequentially comprises a face layer, a leveling layer, a base layer, a roadbed layer and a soil foundation layer from top to bottom, and the face layer is composed of high-strength dense bricks. The leveling layer and the base layer are composed of gravel structural layers, and the roadbed layer is composed of the prefabricated fabricated roadbed. According to the sponge city water permeable laid roadsurface suitable for the fabricated roadbed, it is ensured that water can be rapidly seeped, the accumulated water is reduced, the environment is protected, meanwhile the problems that a sponge laidroad surface is prone to being blocked and damaged and is poor in durability in the prior art are solved, the high road surface using performance is achieved, and the sponge city water permeable laidroad surface suitable for the fabricated roadbed can be suitable for light, medium and heavy traffic loads; and meanwhile resource recycling can be achieved, the density of solidified and sealed prefabricated blocks can further be adjusted through pressurization of an extract opening, and the overall strength and bearing capacity of the roadbed are improved.

Description

technical field [0001] The invention relates to the technical field of highway and urban road construction, in particular to a sponge city permeable pavement suitable for prefabricated roadbeds. Background technique [0002] In urban construction, many cities use a large number of dense and closed surface pavement structures such as cement concrete and asphalt concrete to replace the original soil surface. Public places such as sidewalks, open-air parking lots, courtyards and squares in the city are paved with neat and beautiful stone slabs or cement colored bricks. While improving traffic and road conditions and beautifying the environment, the closed surface also has significant adverse effects on urban ecology and climate. [3]. First of all, the dense and impermeable pavement completely blocks the precious natural precipitation from the underlying soil and groundwater. Most of the precipitation passes through the urban drainage system pipe network and is discharged into ...

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Problems solved by technology

[3]. First of all, the dense and impermeable pavement completely blocks the precious natural precipitation from the underlying soil and groundwater. Most of the precipitation passes through the urban drainage system pipe network and is discharged into rivers, lakes and seas. In addition, the excessive extraction of urban groundwater , leading to lower and lower urban groundwater levels, forming a geological "funnel-shaped" groundwater level, causing the ground to drop, and coastal areas will also lead to seawater intrusion

[0004] The drainage pavement in the current technology is permeable by increasing the porosity of the pavement structure components. The water flow penetrates to the water sealing layer for advection, and the in-situ compensation of the water flow cannot be realized. Although the general permeable pavement has the function of water permeability, due to its porosity The high rate leads to low strength and poor durability, which cannot meet the functional requirements of sponge city permeable pavement

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