【作者】 杨旭东；

【导师】 王秉纲；

【作者基本信息】 长安大学 ， 道路与铁道工程， 1999， 硕士

【摘要】 本文对青藏公路多年冻土地区路基开展全面调研，对路基病害进行了专项调查，全面分析了路基变形组成及其主要影响因素。通过路基土室内融沉压密试验和蠕变试验，对多年冻土地区路基土的工程性质进行了研究。通过重型动力触探试验对多年冻土地区地基承载力进行了分析。结合多年冻土地区的环境条件，对该地区路基变形计算方法进行了探讨。通过现场观测对路基变形和温度场进行了分析。最后，本文提出了控制多年冻土地区路基变形的工程措施。更多还原

【Abstract】 Through the survey on the subgrade in perennially frozen soil zone of QingZang Highway, and the technical survey on the distress of subgrade, the composition of deformation and its main affection factor of subgrade are analyzed in this paper. On the basis of the thaw settlement test and the creep test, the mechanical properties of subgrade soil in penennially frozen soil zone are studied. Meanwhile, through the heavy dynamic feeler inspection test, the bearing capacity of foundation in perennially frozen soil zone are also studied. At last, this paper discusses the calculation method of deformation of subgrade in perennially frozen soil zone, and analyzes the deformation and temperature distribution of subgrade through the field observation.更多还原