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| Research on the Distribution Forms of Landslide Thrust after Anti-slide Pile |
| LI Mei, HE Guo-yu, HAN Gao-sheng, CHEN Guang-hai |
| (Wuhan University of Technology, Wuhan, Hubei 430070, China) |
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Abstract Abstract：Research purposes： The size and distribution of landslide thrust is the main basis for the design of anti-slide pile structure, which directly affects the internal force and size of the pile structure, and there is a big difference in choices of the distribution mode of landslide thrust. In order to reasonably analyze anti-slide piles body force and thrust distribution, and to optimize the design of the anti-slide pile, based on the prototype of Gumuchong bridge slope of Hangzhou-Changsha railway line, the improved slice method, model test and numerical simulation are adopted to research the landslide thrust distribution of anti-slide pile. Research conclusions： (1) The weakening coefficient of elastic modulus and the weakening coefficient of cohesion are introduced〖JP2〗 to weaken the mechanical parameters. The landslide thrust calculated by improved slice method of bidirectional〖JP〗 two slices, considering the lithologic difference of slideing body delamination, is more realistic. (2) Landslide thrust distributions obtained by the three methods are basically consistent. With the increase of buried depth, thrust of landslide after pile increases continuously and the whole distribution form shows a polygonal shape. The distribution forms of landslide thrust transit from the triangle (pile top to 1/2 buried depth) to the rectangle (1/2 to 2/3 buried depth) to trapezoid (2/3 buried depth to sliding surface) along the anti-slide pile and the maximum thrust locates at the sliding surface. (3) The research conclusions can be used as reference for the design of anti- slide piles in slope engineering.
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Received: 13 November 2017
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2017, Vol. 34 
