季冻区路基冻胀影响因素分析及防治措施研究

The investigation of diseases of subgrade in seasonal frozen region and study on the prevention and control measures

对哈尔滨市路基病害类型进行了调查分析,在此基础上对路基粘土进行了不同条件下的闭式冻胀模拟试验,结果表明:在闭式冻胀单因素条件下,高的含水率、压实度和低的冻结温度均有利于冻胀;排水系统设置、置换填土法和提高路面整体强度与刚度的方法适合于季冻区路基冻胀病害防治。

Taking actual investigation and analysing Harbin roadbed disease types, and on the basis of that, testing frost heaving simulation of caly, which is derived, under different conditions. The analysis results show that under closed frost heaving of single factor, low freezing temperature, high moisture content and high degree of compaction can increase the soil frost heave. Drainage system, filling replacement method and enhanced the overall strength of pavement and stiffness, the three kind of method is suitable for seasonal frozen subgrade frost heaving zone control.