多年冻土地区路基变形特征及影响因素

Deformation Characteristics and Influential Factors of Subgrade in Permafrost Region

青藏公路沥青混凝土路面修建后,增大了路基下多年冻土的吸热量,导致了多年冻土融化。多年冻土融沉变形在冻土路基变形中占主导地位,其发生、发展与冻土温度及工程地质特性等有关。通过青藏公路唐南地区路基变形监测数据,分析了路基变形的特征及多年冻土融沉变形的影响因素。

After the asphalt concrete pavement are constructed in the Qinghai-Tibet Highway, the heat absorption of the permafrost is increased and the thaw of the permafrost caused. The thaw settlement Of the permafrost is in the lead in the subgrade deformations, its processes and development are associated with the permafrost temperature and the geological features of permafrost engineering. In this paper, on the basis of the monitoring data of subgrade deformations in Tiangnan region of the Qinghai-Tibet Highway, the characteristics of subgrade deformations and its influential factors are analyzed.