采用有限元分析软件ANSYS，对钢管角钢组合型输电塔进行了地层移动下的极限承载力分析，根据位移加载数值计算方法，计算了输电塔架的极限承载力。计算结果表明，输电塔架单支座沉降很严重。为增强铁塔自身的抗地表变形能力，除需加大靠近塔腿处的杆件强度外，变坡度处的横隔杆件也应加强，并提出了杆塔基础沉降的防控方案。

The ultimate bearing capacity of transmission towers with steel tube and angle steel combined is analyzed by the finite element software of ANSYS in the conditions of ground motion. The ultimate bearing capacity calculated by displacement loading method shows that one support of transmission tower sinks deeply. In order to improve torsion resistance of the tower, both the steel bars near the supports and transverse bars near the changing slope should be strengthened, and some foundation treatment schemes are proposed in this paper.