| Anti-slide pile has been widely used in various engineering fileds,because it has many advantage such as:widely applicable conditions,high anti sliding performance,flexibe pile location Etc.For big landslide,landslide thrust is quite large, multiple piles are usually used to control landslide. As the force of slide-resistant system constituted by double piles and the inter-pile soil is complex,traditional transfer coefficient method can not calculate the thrust and resistance distribution of multiple row piles.In this peper,double row piles landslide thrust calculation principle and mechanical model have been researched,and using strength reduction fern to research the thrust distribution principle of multiple piles. Finally taking multi-row piles landslide for study object,summarizing the thrust distribution and distribution ratio of such landslide.The main research contents and results are as follow:(1)Research of the landslide thrust calculation methods in double-row piles based on transfer coefficient method, then establishing the new method combine transfer coefficient method with "allowable bending strength" in new research perspective, then deducing landslide thrust formula of double-row piles.(2)Calculate landslide thrust of double-row piles in strength reduction fern, size and distribution forms of thrust and resistance are obtained,then summarizing the distribution of thrust and resistance in different row spacing.(3)Analysis the calculation of double-row piles examples,discussing the problems about analytical method and finite element method, pointing out more suitable method in calculating multi-row piles landslide thurst—strength reduction fem.(4)Take multi-row piles as prototype,establishing fem model,calculating the thrust and resistance distribution of each anti-slide pile in different working conditions such as slope excavation,rainfall process and strength reduction process.providing the theoretical basis for engineering optimization. |
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