掏挖与岩石锚杆复合型杆塔基础是输电线路新型基础。开展了掏挖与锚杆基础组合使用的复合型杆塔基础的现场抗拔试验，监测了复合基础荷载位移特性。根据复合基础荷载位移特性和破坏形式，分析了其抗拔承载过程和机理，提出了其抗拔极限承载力计算方法，并将试验与理论计算结果进行了对比验证，二者吻合性较好，研究成果可为复合型杆塔基础设计和工程应用提供依据。

The composite foundation of belled pier and rock anchor is a new type tower foundation in transmission line engineering. The uplift test was carried out and the load-displacement characteristic was monitored. Based on the test data, the foundation uplift load bearing characteristic and failure pattern were analyzed. The calculation methodology on ultimate uplift capacity of composite foundation was proposed and was also verified by the field test results. The research result could give reference to future similar design and application.