关键词: 杆塔基础, 风积沙地基, 抗拔承载力, 水泥固化, 上拔试验, 输电线路

Abstract: Aiming at low water content, low bearing capacity and poor wind erosion resistance of aeolian sand foundation in Xinjiang, we mix different proportion of cement to reinforce aeolian sand foundation. We carry out a series of laboratory model tests on uplift bearing characteristics of model foundation of aeolian sand foundation solidified by cement. The test results show that the characteristics of load-displacement curve of aeolian sand foundation strengthened by cement can be divided into two types curves of steep decline and gradual developing. Unlike pure aeolian sand foundation, the failure mechanism of cement-stabilized aeolian sand foundation is mainly the pure tensile failure. After cement consolidation, the uplift bearing capacity of aeolian sand foundation system increases obviously. For aeolian sand samples with 2% water content and 6% cement content, the uplift bearing capacity of the foundation system is improved most obviously. The result can be basis for the transmission line foundation building and optimization in deserts.

Key words: tower structure, aeolian sand foundation, uplift bearing capacity, consolidating with cements, uplift test, transmission line