Study on the Influencing Factors of Slope Reinforcement with Anti-slip Piles in Hilly Areas
Based on slope support project in Huangtian service area of Guangdong Province,this paper analyzes the effects of soil cohesion,internal friction angle of soil,length of anti-slip pile,and embedding method of anti-slip pile on slope support through numerical simulation calculation.The research results indicate that:With the increase of soil cohesion and internal friction angle,the displacement and stress of the pile gradually decrease.The fully buried arrangement of anti-slip piles is more reasonable than the semi-buried method,with lower displacement,shear stress,and stress on the pile body,and reasonable stress distribution.When using cross section stepped piles for slope support,the displacement of the pile body is small and the interception effect on the sliding body is obvious.In this project,it is recommended to reduce the stiffness of the anti-slip pile when the soil cohesion is greater than 32 kPa or the internal friction angle of the soil is greater than 37°.In the design process of anti-slip piles,it is recommended to use anti-slip piles with a stepped cross-section and adopt a fully buried pile layout method.During the layout process,the ratio of the length of the free section of the anti-slip pile to the height of the sliding body should be maintained at 6/7,which can maximize the support effect of the anti-slip pile while saving construction costs.
万方数据
维普
