Waterproof shock-absorption road surface structure and construction method thereof

Abstract

The invention provides a waterproof shock-absorption road surface structure and a construction method thereof. The structure of the road surface comprises a surface layer, a base layer, a drainage underlayer and a road bed from top to bottom; a waterproof shock-absorption functional layer is arranged between the surface layer and the base layer; the waterproof layer, the base layer and the drainage underlayer are separated naturally; and a water-permeable filter layer is arranged between the drainage underlayer and the road bed. The construction method is realized by arranging the road bed, the water-permeable filter layer, the drainage underlayer, the waterproof layer, the base layer, the waterproof shock-absorption functional layer and the surface layer from bottom to top. The road surface structure can effectively prevent the damage of the road surface and the road bed by the water on road surface and the underground water; meanwhile, the road surface structure has good shock absorption function and remarkably prolongs the actual service life of the road.

Description

technical field [0001] The invention relates to a pavement structure and a construction method thereof, in particular to a waterproof and vibration-damping pavement structure and a construction method thereof. Background technique [0002] In fields such as roads, airport runways and municipal facilities, shortened pavement life has become a major problem in construction. There are many reasons for early failure and shortened life of pavement. Among them, research shows that "water is enemy number one". According to the source of water, road surface water damage can be divided into road surface water damage and ground water damage. [0003] Road surface water damage mainly means that road surface water (such as rainwater) enters the interior of the surface layer through the pores, joints or cracks of the surface layer, resulting in water damage to the surface layer material, and the water further infiltrates into the base layer, causing the base layer to be scoured and dam...

AI Technical Summary

Problems solved by technology

This measure can greatly reduce the degree of frost heave of the subgrade, but the problem is that due to the rise of capillary water, groundwater will still cause frost heave damage inside the pavement structure

The semi-rigid base material has high compressive strength and can resist the compressive stress generated by the extrusion force. However, the tensile strength of the semi-rigid base material is small, and the interlayer tangential force makes the base layer pull, which will cause damage to the base layer. Adverse effects, even when this tensile stress reaches its tensile strength, cracking of the base layer occurs, causing pavement failure

In addition, for rigid pavement structures, such as cement concrete pavement, due to the high brittleness of the cement concrete material and the high rigidity of the surface layer, there are non-uniform voids and non-uniform support between the layers when they are in contact with the base layer. Next, the stress on the surface layer is unfavorable, and the fatigue life is reduced. Especially when the base layer is a semi-rigid base layer or a rigid base layer, the surface layer and the base layer are head-to-head. Low-cycle fatigue damage at the horizontal level, pavement damage, and then provide a channel for road surface water to infiltrate into the base and subgrade

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