The Simulation Of Foundation Pit Of Zhong Lü Building And Research Of Influencing Factor Of Support Structural Distortion

This paper proceed comprehensive analysis to a lot of the theory and method of foundation pit both here and abroad.Finally,applied continuous medium finite element method to proceed numerical simulation to practice project.The subject investigated of this paper is the foundation pit of ZhongLv Building in Shenyang,the research instrument is Nonlinearity finite element software which is called ADINA.Established triaxiality finite element model, simulated value and practice value has small different.,through extracting aftertreatment transformation data,researched the spatial effect of foundation pit.Adopted truthfully soil module to establish partly foundation pit model,changed the relevant parameter of soil and support structure,proceed a great deal simulate operation.The result proven that elasticity modulus and Poisson ratio effect the transformation of support visibility,the effect of cohesive force and angle of friction is small;the fixity depth and diameter of pile has some infection,but adopt to enlarge two parameter to decrease support transformation is wasteful.When the slope angle of bolt is from 10 degree to 25 degree,the transformation of support is small,When the position of bolt is approach pile top,the transformation of support is small,the langer that length of bolt ,the smaller that transformation of support.And use the method which is orthogonal experimental design to research the significance of inflection of factor.