人工斜掏挖角钢插入式基础承载力试验研究

Field Test on Bearing Capacity of Inclined Man-made Hole Inserted Foundation

根据送电线路基础的受力特点 ,采用快速循环维持荷载法对人工斜掏挖角钢插入式基础在上拔 -水平力和下压 -水平力组合作用的 2种不同工况下地基土与斜立柱基础间共同承载、相互作用规律进行现场试验研究。结果表明 ,人工斜掏挖角钢插入式基础的抗拔和抗倾覆稳定性满足设计要求 。

The study on load bearing and deformation capacity of inclined man-made hole concrete column foundations, which are subject to the uplift load or compression load combined with horizontal force, has been fully carried out according to the forces applied characteristic in transmission foundations, using the fast recalculating maintained load test method. It is indicated that the inclined man-made hole concrete column foundation can satisfy the requirements of transmission lines for the load bearing and deformation capacity because it not only has the advantage of stub-angle-inserted foundation, which can reduce the moment resulted from the horizontal forces, but also make good use of the engineering property of high bearing capacity and low deformation range which belongs to the undisturbed soil. As a result, the stability of the line has been improved greatly, thus to solve the engineering problems economically and efficiently. [