拉萨市路基的冻胀与交通荷载耦合作用对路面的稳定性影响

摘要

Lhasa is located in the high altitude and season-al frozen soil region. And there is large temperature difference between day and night. The pavement is prone to be damaged under the interaction of frost heave and traffic load. In this pa-per, the stability of the pavement in frost heave、 traffic load、frost heaving and traffic load coupling conditions are obtained by field investigation、 theoretical calculation analysis and using FLAC3D software to get the numerical simulation.%拉萨市地处高海拔季节性冻土区，昼夜温差大，在冻胀和交通荷载的共同作用下，路面易发生破坏。本文通过野外勘察、理论计算分析并运用 FLAC3D进行数值模拟，得出在冻胀、交通荷载、冻胀和交通荷载耦合等工况下路面的稳定性。