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冻土区域存在着公路结构设计上的特殊性,这种特殊性由于较多环境因素的介入,而使得公路冻土路基结构设计一直是一个较难逾越的难题。公路冻土路基普遍存在着冻胀与融沉双重病害,对抗这两种病害,保障道路的高稳定性的关键,就在于排水与隔水系统,以及隔热与持温系统,同时,更在于将这一系列措施整合为一个封闭的公路冻土路基结构体系。
The permafrost region has the particularity of the structural design of the highway. This particularity has made the design of the permafrost roadbed structurally more difficult to overcome due to the involvement of more environmental factors. The permafrost embankment of highway generally has the dual frost heave and thaw sinking disease. To fight these two kinds of diseases, the key to guarantee the high stability of the road lies in the drainage and water isolation system, as well as the heat insulation and temperature holding system. At the same time, This series of measures will be integrated into a closed road network of permafrost subgrade structure.