The Study On Ground Treatment In Passive Zone In The Soft Clay Excavation

This paper introduces a controlled deflection and the ground displacement of the soft soil excavation technology—reinfroce ground.the reinfroce ground makes an effect on iomproving the resistant coefficient, excavation stability and displacement control. That technology has been applied in applications.but how to consider the role of reinforce ground,and determine the vertical zone of reinfrocement, and arrange the layout of reinfroce ground, when considering the active earth pressure of corner effect have unclear. the paper mianly optimizes the desgin of the reinfrocement the internal soil of the soft clay excavation.Firstly, through collecting large number of information of reinfroce ground,this paper sums up its mechanical properties and layout of the form,and gains the right of support of reinforce ground by analyzing the supporting form of excavation.Secondly, the paper expatiats the mechanism of reinforce ground from the development of plastic zone, the theology of soil,the corresponding factor safety against basal heave and the resistant coefficient.Thirdly, the finite element simultion on various factors of reinfroce ground (including the depth of excavation,the pile length,cement content,ground overload) are done in this paper. According to the changes of numerical analysis, we determines the right of the reinfrocing zone of desgin,and verity the educing conclusions through measured date.Finally,by considering the active earth pressure of corner effect, this paper adopts the three-dimensional finite element method to analysis the feature of excavation deflection and failure for excavation in conner,which can be used to desgin the reasonable layout of reinfroce ground.furthermore.