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A platform for research: civil engineering, architecture and urbanism
Subgrade structure in permafrost region
The invention discloses a subgrade structure in a permafrost region. The subgrade structure comprises the following structure layers: a packing layer, a steel slag layer, a rubble layer, a joint cement layer, an aluminum foil layer, a heat-resistance cooling-conductance layer, a geotechnical cloth layer, a fiber concrete layer and a paving embankment soil filling layer in sequence from bottom to top. According to the subgrade structure, through the designed laying of the whole structure and the specific requirements on each layer material, the advantages of the different materials are fully played by virtue of the heat conduction and ventilation performance of the materials, a great deal of cold energy is absorbed in cold seasons, meanwhile, the amount of absorbed heat in hot seasons is effectively limited, the net heat release of a subgrade during one-time freezing and thawing cycle is improved greatly, and furthermore, the temperature of frozen earth under the subgrade is effectively lowered. Therefore, permafrost under the subgrade can be protected by the subgrade, frost heaving and thawing settlement are avoided, and the safety and stability of the subgrade structure are improved. A construction method is clear and can be taken as a basic method for construction of a highway subgrade in a permafrost region.
Subgrade structure in permafrost region
The invention discloses a subgrade structure in a permafrost region. The subgrade structure comprises the following structure layers: a packing layer, a steel slag layer, a rubble layer, a joint cement layer, an aluminum foil layer, a heat-resistance cooling-conductance layer, a geotechnical cloth layer, a fiber concrete layer and a paving embankment soil filling layer in sequence from bottom to top. According to the subgrade structure, through the designed laying of the whole structure and the specific requirements on each layer material, the advantages of the different materials are fully played by virtue of the heat conduction and ventilation performance of the materials, a great deal of cold energy is absorbed in cold seasons, meanwhile, the amount of absorbed heat in hot seasons is effectively limited, the net heat release of a subgrade during one-time freezing and thawing cycle is improved greatly, and furthermore, the temperature of frozen earth under the subgrade is effectively lowered. Therefore, permafrost under the subgrade can be protected by the subgrade, frost heaving and thawing settlement are avoided, and the safety and stability of the subgrade structure are improved. A construction method is clear and can be taken as a basic method for construction of a highway subgrade in a permafrost region.
Subgrade structure in permafrost region
MA TAO (author) / HUANG XIAOMING (author) / ZHAO YONGLI (author) / TANG TAO (author) / WANG HAINIAN (author)
2015-11-25
Patent
Electronic Resource
English
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