Frozen soil preventing highway

Abstract

The invention provides a frozen soil preventing highway. Water-resisting layers are correspondingly arranged on the two sides, positioned under a frost line, of a roadbed; the roadbed is specifically a foam lightweight concrete material and extends a position below the frost line from a position above the ground line; and furthermore, protective layers are correspondingly arranged on the two sides, positioned between the ground line and the frost line, of the roadbed. According to the frozen soil preventing highway, one element of water is tried to be blocked; through the protective layers and the water-resisting layers, and the water is stopped from entering the roadbed from the two sides and the bottom of the roadbed so as to prevent the roadbed from generating freeze thawing. Through combination of novel roadbed filling foam lightweight concrete and the water-resisting layers and the protective layers, the roadbed is enabled to work in an environment without water, the freeze thawing damage to the roadbed is skillfully avoided, and the frozen soil preventing highway is especially suitable for seasonal frozen soil regions or permafrost regions.

Description

technical field [0001] The invention belongs to the technical field of antifreeze roads, in particular to an antifreeze road. Background technique [0002] Permafrost is widely distributed in my country. The vast area west of the line from Helan Mountain to Ailao Mountain, as well as the area east of this line and north of the Qinling-Huaihe line are seasonally frozen soil areas, accounting for about 55% of my country's land area. According to statistics, about 75% of the traffic routes in our country are in the seasonally frozen soil area. After the roads in the seasonally frozen soil area are completed and put into operation, as the climate changes alternately, the seasonally frozen soil repeatedly freezes and thaws, seriously affecting the strength of the roadbed. , and for permafrost areas, due to the heat absorption of asphalt and other materials, the permafrost under the roadbed will gradually become seasonally frozen soil with high water content. In this case, the roa...

AI Technical Summary

Problems solved by technology

In addition, the traditional subgrade filling is heavy, the foundation stress is large, and the subgrade is easy to settle. The soil around the subgrade below the freezing line will also generate frost heaving pressure, which will cause extrusion damage to the subgrade.

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