地下连续墙施工周边土体水平应力和位移的解析解

发布时间：2018-01-15 22:14

本文关键词：地下连续墙施工周边土体水平应力和位移的解析解　出处：《武汉理工大学学报》2014年09期 　论文类型：期刊论文

【摘要】：将复变弹性理论应用于地下连续墙施工过程周边土体水平应力和位移求解。首先通过有限差分数值模型对比计算,讨论了将泥浆护壁作用下地下连续墙成槽开挖三维问题简化为平面应力问题求解周边土体水平应力和位移的可行性,在此基础上通过保角映射将矩形槽以外的无限区域映射到单位圆域,利用复变弹性理论推导了地下连续墙施工过程中周边土体水平应力和位移的求解公式。与数值解的对比验证了推导出解析解的精确性,并进行了参数学习,得出了槽面中心点最大水平位移的计算简式。最后将其应用于实例分析,验证了解析解的实用价值。
[Abstract]:The complex elastic theory is applied to solve the horizontal stress and displacement of surrounding soil in the construction process of underground continuous wall. Firstly, the finite difference numerical model is used to calculate the horizontal stress and displacement. This paper discusses the feasibility of simplifying the three-dimensional problem of grooving excavation of underground continuous wall under the action of mud wall as a plane stress problem to solve the horizontal stress and displacement of surrounding soil. On this basis, the infinite region outside the rectangular slot is mapped to the unit circle region by conformal mapping. The formulas of horizontal stress and displacement of surrounding soil in the construction of underground continuous wall are deduced by using the complex elasticity theory. The accuracy of the analytical solution is verified by comparison with the numerical solution and the parameter study is carried out. A simple formula for calculating the maximum horizontal displacement of the center point of the slot surface is obtained. Finally, the practical value of the analytical solution is verified by applying it to the analysis of an example.
【作者单位】：湖北工业大学土木工程与建筑学院;武汉理工大学土木工程与建筑学院;
【分类号】：TU43
【正文快照】： 地下连续墙施工过程会影响周围土体的应力场和位移场[1-2],土体变形过大对周围环境造成潜在的危害。而对于将作为承载结构的地下连续墙,墙上土压力的变化可能会影响其承载力大小。地下连续墙施工是一个三维开挖过程,土体的卸载和加载又非常复杂。关于地下连续墙施工效应的研究

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