A permeable pavement structure and its construction method

Abstract

The invention belongs to the technical field of road engineering, and specifically relates to a permeable pavement structure and a construction method thereof. The structure includes a cover plate, a column, a connector and a crushed stone cushion, and the crushed stone cushion is laid on a soil foundation; The cover plate is laid on the crushed stone cushion, the middle part of the cover plate is provided with a permeable groove, and the outer edge of the cover plate is opened with a through hole; the column is inserted into the crushed stone cushion layer and the soil foundation, and is arranged at the joint of multiple cover plates At the position, the upper end surface of the column is flush with the upper surface of the crushed stone cushion and has a plurality of connecting holes; the connecting piece is inserted through the through hole into the connecting hole for positioning the cover plate. The invention is beneficial to ensure the flatness of the road surface, and provides sufficient bearing capacity, so that pedestrians can pass safely and comfortably; rainwater can be quickly discharged below the road surface, reducing road surface water; the gravel cushion not only plays the role of water storage , and provide support for the cover, the rainwater in the gravel cushion can gradually penetrate into the soil foundation, supplementing the groundwater.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a permeable pavement structure and a construction method thereof, which are suitable for roads, squares, residential areas, parks, etc., and are applied to roads where pedestrians pass, such as sidewalks in roads and pedestrian areas in squares , walking paths in the park, etc. Background technique [0002] With the continuous popularization of the concept of sponge city, the use of permeable structures for sidewalks has gradually become the consensus of people, because the use of permeable structures for sidewalks has at least the following functions and meanings: it reduces the runoff of rainwater on the road surface, which is conducive to pedestrian travel; it reduces the flow of rainwater into stormwater pipes, The pressure of drainage pipes and channels is relieved; rainwater seeps into the soil foundation through the permeable structure, which can reple...

AI Technical Summary

Problems solved by technology

Due to the small porosity of permeable concrete bricks and sand-free concrete, the water permeability is limited, and the rainwater is not easy to enter the gravel layer through the two layers (permeable concrete bricks and sand-free concrete) with poor water permeability; as the sidewalk is built and passed, the rainwater carries sediment It will gradually block the gaps in the permeable concrete bricks, which will easily cause the permeable function of the permeable concrete bricks to fail and cannot be restored.

Commonly used permeable structures, in addition to poor water permeability, also have shortcomings: In order to ensure the water permeability of the structure, the layers of commonly used permeable structures lack sufficient bonding, and each layer is easy to loose under the action of external force. After a period of time, permeable concrete bricks will often appear loose, broken, road surface subsidence and other diseases, not only the pedestrian experience is poor, but also the cost of later maintenance is increased

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