Analysis the Reason of Subside and Displacement of Cone Cylindrical Foundation for Qinghai-Tibet Railway 110kV Transmission Project and Treatment Measure

The paper analyses the reasons of subside and displacement of cylindrical Foundation for Qinghai-Tibet railway 110kV transmission project,and expounds perennial frozen ground harmfulness and failure mechanism on foundation and base of transmission line project,then makes discussion and research on the foundation's treatment method and construction measures of perennial frozen area transmission line project,and it proposes some reference for the foundation base's design and construction of transmission line project on perennial frozen area.