The Study Of Factors Affecting The Force Of Anchor Anti-slide Pile System

As a new type of retaining structure, anti-slide pile has been widely used in rock andearth anchoring construction in recent years. But because the interaction between thepile-anchor system and soil exist complex mechanical properties, there is a large gap betweenthe design theory researches and engineering practice at present, this is mainly caused byrandom selection of design parameters of pile, anchor cable parameters, geotechnicalparameters. About which parameter influences the force of anchor piles bigger, moresignificantly, and which parameter should be mainly considered, there is no qualitativeconclusions currently and they make it difficult to achieve the purpose of safe and economicaldesign simultaneously. Therefore, focusing on the influence factors research of anchor-pilesystem force, this paper mainly carries out the following six areas of work.(1) By reading a lot of literature related to the subject, focuses on elaborating theresearch status of anchor anti-slide pile from the categories of anchor anti-slide pile, the tests,theory, numerical simulation and design elements, and briefly discusses the research status ofthe contact problems and contact surface.(2) To proceed from the theoretical perspective, introduces the interaction mechanism ofanchor anti-slide pile with rock and soil, the numerical simulation of anchor anti-slide pile,the mechanical model of anchor anti-slide pile, strength reduction, the orthogonal design, andillustrates the correctness of self-strength reduction program implemented in FLAC3Dthroughthe typical slope.(3) Starting form the contact problems between anti-slide pile and soil, analyze thedistribution of contact stress with the depth when reinforces different types of slope with pilesthrough three typical slope preliminary. On this basis, analyze the impact of the contactsurface slope parameters for contact stress choosing the simplest slope firstly, and determinethe primary and secondary relationship as well as significance of the effects of exposureparameters on contact stress. Secondly, analyze the impact of anti-slide pile design parameters,anchor design parameters on the contact stress relying on the practical engineering slope withsliding surface and determine the primary and secondary relationship as well as significanceof the effects of its impact on contact stress.(4) Selecting the typical non-uniform slope, analyze the distribution of shear force andbending moment of pile body with the change of anti-slide pile design parameters and anchoranti-slide pile design parameters firstly, and then analyze the effect and significance of anti-slide pile design parameters on the internal force of pile, and the effect and significanceof anchor design parameters on the internal force of pile, anchor axial force and shear stress.(5) Describe the dynamic analysis method in FLAC3Dand the selection principle ofseismic waves. On the basis of the analysis of the third chapter, firstly, analyze thedistribution of dynamic shear, bending moment and contact stress over time. Secondly carryout the sensitivity analyzes of anti-slide pile design parameters acting on them and give themost significant factors.(6) Summary the main conclusions of this study, illustrate the deficiencies of this study,and raise the prospect about the contact problems between the anchor anti-slide pile and soil.