根据输电线路工程工期紧、运输条件困难的状况，针对坚硬粘土回填地基，进行了钢结构装配式基础的上拔真型试验，对基础位移关系曲线、基础构件的应力应变关系、地基土间的土压力变化规律进行了同步监测，给出了相关设计参数取值，为其在输电线路工程中的应用提供依据。

According to the situations of urgent construction period and difficult transportation in transmission line engineering, the field uplift behavior tests on assembly foundation of steel structure were carried out in hard backfill clay. The loading-displacement curves were obtained, and the stress-strain relationship in steel components and the earth pressure variation changes were investigated. This paper presented the important data for the theory of capacity calculating, design method and engineering applications of this kind of foundations in transmission line engineering.