Construction method of comprehensive treatment structure for subgrade freezing damage in alpine region
A construction method and technology in alpine areas, applied in the directions of roads, roads, side ditch/curbstone, etc., can solve problems such as endangering traffic safety, increasing maintenance costs, destroying pavement structure, etc. effect of the method
Inactive Publication Date: 2017-07-14
ZHENGPING ROAD & BRIDGE CONSTR CO LTD
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Problems solved by technology
In winter, the subgrade will suffer from frost heaving due to water, which will damage the pavement structure and break the pavement, endangering traffic safety and increasing maintenance costs
Method used
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Embodiment Construction
[0028] The present invention will be further described below in conjunction with the accompanying drawings. This embodiment focuses on the embodiment of the structure of the present invention.
[0029] figure 1 It represents the structural layout of the comprehensive treatment of subgrade frost damage in the alpine region. As shown in the figure, the subgrade frost damage comprehensive treatment structure mainly includes: pavement 4, side ditch 1, concrete layer 2, side ditch 5, mortar rubble slope protection 6, intercepting ditch 7, insulation layer filling 9, plastic waterproof board 10 and The blind ditch is composed of: the side ditch 1 and the side ditch 5 are located on both sides of the road surface 4, the side ditch 1 is located on the concrete layer 2, the intercepting ditch 7 is located between the natural slope 8 and the masonry rubble slope protection 6, the concrete layer 2 and the The road surface 4 is connected by the road shoulder 3, the mortar-laying rubble s...
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The invention relates to a construction method for comprehensive treatment for subgrade frost damage in a high cold region. The construction method comprises the following steps: construction layout, blind ditch digging, concrete foundation pouring and blind ditch laying, wherein a blind ditch comprises a concrete foundation, a vertical heat insulation board, a water filter tube, medium-coarse sand, gravels, a transverse heat insulation board, geotechnical cloth and the like from bottom to top; the top of the blind ditch is treated with the following processes of pouring a concrete layer with a side ditch, laying a plastic waterproof board, refilling filled earth of a heat insulation layer, building a mortar rubble masonry pavement, arranging an intercepting drain and the like. The construction method disclosed by the invention is simple in construction process and an operation method. The comprehensive treatment structure for subgrade frost damage in the high cold region, obtained by the construction method, has the advantages that the construction is convenient, dewatering and draining are achieved, freeze injury caused by water seepage is reduced, further water seepage is avoided, the stability of the whole foundation is improved, and the like.
Description
technical field [0001] The invention belongs to the technical field of roadbed construction, and in particular relates to a construction method of a comprehensive treatment structure for freezing damage of roadbeds in alpine regions. Background technique [0002] In the alpine region, the temperature is low in winter, and the seepage and freezing of the slope will increase the load on the slope surface. At the same time, the frost heaving within the maximum freezing depth will destroy the original soil stability structure of the slope surface, resulting in landslides. The long-term erosion of subgrade water seepage will weaken the overall strength of the base and sub-foundation. Under the repeated action of long-term traffic load, the free water on the surface will form mortar, and the long-term accumulation will cause pavement network cracks and cause early damage to the pavement structure. In winter, the subgrade will suffer from frost heave due to water, which will damage...
Claims
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IPC IPC(8): E01C3/06E01C11/22
Inventor 任艺宏蒲广宁韩馨赵怀忠马忠宝袁建军徐元海马月瑛王静李娟
Owner ZHENGPING ROAD & BRIDGE CONSTR CO LTD