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Yield Criterion and Finite Element Analysis for Soil Nailing Wall

Author: CaiBin
Tutor: ZouYinSheng
School: Hunan University
Course: Structural Engineering
Keywords: Soil nail wall Yield criterion Formation Mechanism Finite Element Analysis Composite soil nailing walls
CLC: TU476
Type: Master's thesis
Year: 2007
Downloads: 137
Quote: 0
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Abstract


With the development of industry and urban construction, urban ground space is increasingly tight, underground space as an underutilized resource, has begun to be taken seriously and the development and utilization of the increasing number of underground garage, underground shopping malls, subways and other underground facilities excavation depth from shallow to deep direction development. Soil nail wall pit project with its prominent economic performance has been widely used, many scholars have a large number of experimental and theoretical studies of soil nail wall, but the traits of the soil nail wall study and work mechanism lags far behind in engineering practice. Its mechanism and its traits are not totally clear, the problem is still need for further study. First, from the angle of the slope internal stress analysis of slope instability mechanism for visual analysis, according to the actual needs of the deep foundation pit Research and Engineering of the composite soil nail wall, starting from the point of view of the theory and solve practical engineering problems using the finite element software ANSYS in-depth analysis of different forms of soil nail wall. Come to the conclusion that a certain reference value for engineering practice. Specifically the following aspects: (1) from the slope angle of the internal stress analysis, respectively, using the current single MC yield criterion and tension - shear composite yield criterion intuitive analysis of slope failure mechanism, and tension - shear composite yield criterion is introduced into the soil nail wall stability calculations, combined with soil nailing wall instance, comparative analysis of the tension - shear composite yield criterion calculated safety factor \the supporting technical regulations \(2) In accordance with the actual needs of the Research and engineering of composite soil nail wall, from the point of view of the theory and solve practical engineering problems, the three-dimensional non-linear ordinary soil nail wall and stirring the pile - soil nailing composite soil nail wall sexual finite element analysis, comparative analysis of the two kinds of support in the form of traits. (3) study the soil nail length, the inclination of soil nail mixing pile stiffness of the composite soil nail wall. (4) by comparison with composite soil nail wall during the excavation of the structure variation of traits and a variety of influencing factors of the ordinary soil nail wall, soil nail wall constraint mechanism.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > The basis of the special form
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