Three Dimensional Numerical Analysis Of Soil Anchor

Experiencing research and application in several decades,the technology of soil anchor has already become one of the most commonly used methods in the slope engineering.But because the mechanism how anchor act can not be well understood comprehensively now,at present the design of anchor is mainly dependent on project experience,with the support of the theoretical calculation.Thus the fundamental research of soil anchor can hardly satisfy the project application.This dissertation,on the basis of model experiment,studies the soil anchor through the finite element method and numerical simulation,and studies the rule of soil anchor stress and strain.Researches have been completed in this paper as follows:1.Looks back the applied history of anchor,and then reviews current calculation theories and anchoring theory of anchor.2.Detailed introduce application of FEM theory in geotechnical engineering,at the same time,generalizes simply the characteristics of MSC.Marc and its FEM theory.3.Through the finite element method MSC.Marc and numerical simulation,create the FEM model;analyzes the interaction of anchor and soil;studies the relationship of stress of anchor and a series of variables:position in the anchor system,changes of the load in the slope and anchor span,as well as the change situation and rule of anchor stress with the influence of these complex factors.4.Studies the stress concentration phenomenon and the load bearing efficiency of anchor, and proposes the coefficient of anchor stress concentration and the coefficient of anchor system stress concentration.5.Compares the numerical simulation data with the results of field experiment,discusses the difference between the experiment and the numerical simulation.In this dissertation,the study of the rule how anchor stress changes and the coefficient of anchor stress concentration and coefficient of anchor system stress concentration is useful in actual engineering more or less.