Analysis Of Anti Slide Pile Arch Development Mechanism And Parameter Influence

With the enlargement of human engineering activities,the amount and harm degree of landslide disaster increase.The pile is widely applied in landslide disaster management due to its simple construction,small disturbance stability to landslide,strong ability to resist the landslide thrust and many other advantages.Anti-slide pile engineering is widely applied in domestic and foreign research on the mechanism of the soil arch effect also many,because of many parameters impact factors influence soil arching effect,the soil arch effect on the formation,development and the design of the anti-slide pile has not yet formed a consensus theory basis and design specification.The theoretical research on the soil around the interaction mechanism of anti slide pile after pile is far behind the actual engineering application of anti slide pile,soil arching effect increases the anti slide pile of landslide supporting effect,so the anti slide pile arch development mechanism and parameter influence analysis research is ten important significance..The anti slide pile parameters and development mechanism of the soil arching effect conduct as the research object,using theoretical analysis,numerical simulation analysis and research method of combining with the engineering practice,discusses the law,in order to perfect the theoretical basis of the research of anti slide pile.In this paper,the anti slide pile arch development mechanism of development and influence of parameters is mainly studied as follows:(1)Through reading,studying and summarizing the relevant reference documents,the author knows the domestic and international research results of soil arching effect,and gets the purpose,significance and innovation of the research on the soil arching effect.(2)Analyze the soil arching effect and development parameters and the forming mechanism of soil arching,and classification method of soil arching mechanism of soil arch,arch and arch foot classification,influence factors,soil arching effect of soil arch destruction.(3)Establishment of the anti slide pile mechanical arch calculation model,based on pile bearing mechanical model for arch at the arch foot in soil and pile side friction arch mechanical model of arch foot soil,load pressure the calculation of net rise of these two models under the arch axis and high soil arch can bear.(4)Summarize the common methods of calculating the spacing between piles,and analyze the advantages and disadvantages of their calculation methods.A method for calculating the spacing between piles based on the direction of sliding surface is proposed,and the formulas are derived.(5)Establish the force model of pile anti slide through FLAC 3D simulation of soil arch formation and development,the analysis of changes of pile soil arching effect the formation and development of the maximum principal stress distribution graph.(6)By establishing mechanical model of pile anti slide through FLAC 3D,different construction technology of pile soil,change anti slide pile size,comprehensive analyzed the landslide thrust the size of pile spacing and pile these aspects to discuss their anti slide piles on soil arching effect from a macro point of view.