The design of transmission line foundation in aeolian sand area is one of the key research topics in current power grid construction. Aeolian sand is special soil foundation; design in aeolian sand area has little relevant design basis. In the view of the characteristics of transmission line foundation engineering in aeolian sand area

the prototype tests of transmission line foundation are carried out. The deformation and bearing capacity

strain characteristics of the foundation and the contact pressure between the foundation and aeolian sand under the combination of uplift and horizontal load as well as the combination of pushdown and horizontal load are studied through the tests. According to the results

the design parameters of transmission line foundation in aeolian sand area are proposed. The test results provide a basis for design of foundations in Taiyuan-Tazhong 220 kV transmission line

which improve the reliability and rationality of the design of the transmission line foundation in aeolian sand area.