岩土力学2011，Vol.32Issue(2)：617-622,6.
环形超深基坑围护结构受力变形特性分析
Mechanical and deformation characteristics of enclosure structure for annular extra-deep excavation
罗耀武 1凌道盛 2陈云敏 1胡琦 1陈峥3
作者信息
- 1. 浙江大学,软弱土与环境土工教育部重点实验室,杭州,310027
- 2. 黄河勘测规划设计有限公司,郑州,450003
- 3. 浙江工业大学,杭州,310014
- 折叠
摘要
Abstract
Based on the deep excavation of Shanghai 2010 Exposition 500 kV substation, the plane strain and axisymmetric elastic foundation FEM are used to simplify the space effect of the enclosure structure.The space effect of the annular enclosure structure, the inner liner and the different water and soil pressure distribution model are considered for the mechanical and deformation characteristics of enclosure structure.Through comparision between the calculated and measured results, several results are obtained: the space effect of the annular enclosure structure has a great influence on the mechanical and deformation characteristics of it; the ring stiffness of the enclosure structure must be considered during calculation; the inner liner is beneficial to the mechanical and deformation of the diaphragm wall, like a ring supporting; the measured horizontal displacement of the diaphragm wall is close to the result of axisymmetric finite element analysis when lateral pressure coefficient is 1.0; the measured hoop stress and bending moment of diaphragm wall are between the result of estimating water and earth pressure separately and lateral pressure coefficient is 1.0.关键词
环形超深基坑/围护结构分类
建筑与水利引用本文复制引用
罗耀武,凌道盛,陈云敏,胡琦,陈峥..环形超深基坑围护结构受力变形特性分析[J].岩土力学,2011,32(2):617-622,6.
