锥柱基础由于其结构特点能全部或部分消除切向冻胀力，在青藏直流联网输电线路工程中高海拔多年冻土区段得到了广泛应用。分析了锥柱基础不同断面型式的性能和特点，并针对青藏直流线路工程中不同冻土的地质条件，对常规锥柱基础型式进行了多方案的优化改进。

Cone cylindrical foundations are widely used in Qinghai-Tibet HVDC Project at high-altitude permafrost areas, due to its structure advantages of reducing or eliminating tangential frost-heave forces. In accordance with contrast analysis on performances and characteristics of cone cylindrical foundations at different cross section, multi-program optimization and improvement design were carried out according to the geological conditions of permafrost in Qinghai-Tibet HVDC transmission line project.