Mechanical model of permanent pavement structure

Abstract

The invention discloses a mechanical model of a permanent pavement structure. The mechanical model comprises a water filtering type geotextile model which is laid on a leveled pavement, a graded broken stone model laid on the water filtering type geotextile model, an asphalt mastic macadam mixture model laid on the graded broken stone model, an air drying model and an asphalt concrete model, wherein the length of the asphalt mastic macadam mixture model in the direction perpendicular to the axial direction of a tunnel is smaller than that of the graded broken stone model; the air drying modelis arranged in the asphalt mastic macadam mixture model in a penetrating mode, and the air drying model comprises a plurality of ventilation pipes and a mechanical support; and the asphalt concrete model is laid on the asphalt mastic macadam mixture model. The mechanical model of the permanent pavement structure has the beneficial effect that the interior of the pavement structure is dehumidifiedby utilizing natural wind. The invention further discloses a design method of the mechanical model of the permanent pavement structure. The construction mode is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of tunnel road construction. More specifically, the present invention relates to a mechanical model of a permanent pavement structure and a method for its design. Background technique [0002] With the development of expressway construction, there are more and more tunnels passing through the expressway, which are longer and longer. Tunnel roads usually need to pass through mountains, and water flows from top to bottom. Tunnel roads are located at the bottom, so they often deal with wet In the environment, especially in the rainy season, the degree of humidity is even worse, which is very unfavorable to the maintenance of tunnel roads. Combined with the current large traffic flow and frequent overloading, it will affect the service life of the tunnel road. Therefore, it is very necessary to design a permanent pavement structure model suitable for the tunnel road by using the geographical environment of the ...

AI Technical Summary

Problems solved by technology

[0002] With the development of expressway construction, there are more and more tunnels passing through the expressway, which are longer and longer. Tunnel roads usually need to pass through mountains, and water flows from top to bottom. Tunnel roads are located at the bottom, so they often deal with wet In the environment, especially in the rainy season, the degree of humidity is even worse, which is very unfavorable to the maintenance of tunnel roads

Combined with the current large traffic flow and frequent overloading, it will affect the service life of the tunnel road. Therefore, it is very necessary to design a permanent pavement structure model suitable for the tunnel road by using the geographical environment of the tunnel itself.

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