Asphalt pavement structure based on coordination of deformation of subgrade and pavement

Abstract

The invention provides an asphalt pavement structure based on the coordination of the deformation of a subgrade and a pavement. The pavement structure comprises an asphalt pavement layer, an anti-fatigue semi-rigid base layer and a sub-base layer in sequence from top to bottom, wherein the asphalt surface layer comprises a surface layer, a middle surface layer and a lower surface layer; the surface layer is located on the upper surface of the asphalt pavement layer; the middle surface layer is paved under the surface layer; the lower surface layer is paved under the middle surface layer; sticking layer oil is sprayed among the surface layer, the middle surface layer and the lower surface layer respectively; the anti-fatigue semi-rigid base layer is paved under the lower surface layer; prime coat oil is sprayed between the anti-fatigue semi-rigid base layer and the lower surface layer; and the sub-base layer is paved on the subgrade. The influences on the pavement structure, caused by the non-uniform deformation of the subgrade, can be effectively alleviated.

Description

technical field [0001] The invention relates to a road asphalt pavement structure, in particular to a fatigue-resistant asphalt road pavement suitable for coordinating deformation of roadbed pavement. Background technique [0002] The uneven deformation of the subgrade, such as the consolidation settlement of the soft foundation, the collapsing deformation of the loess, the freeze-thaw cycle deformation of the frozen soil, and the hygroscopic expansion and dehydration shrinkage deformation of the expansive soil, etc., seriously affect the stability of the subgrade structure, which is easy to cause Landslides, collapses, slides and cracks occurred in the subgrade. At the same time, uneven deformation of the subgrade leads to uneven distribution of stress on the road surface, which can easily cause waves, waves, wrapping and subsidence on the road surface, and even cracking of the surface layer and semi-rigid base layer, and fracture of the concrete panel. [0003] For a long...

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The present invention is aimed at the deficiencies in the above-mentioned prior art field, and provides a new asphalt pavement structure based on coordinating the deformation of the subgrade and pavement to solve the problem of pavement structure damage when the subgrade of the anti-fatigue asphalt pavement is unevenly settled. To achieve the purpose of no structural damage within the design service life

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