岩土工程学报Issue(z2)：284-290,7.DOI:10.11779/CJGE2014S2050
上海悬挂式地下连续墙基坑渗流侵蚀引起的沉降研究
Land subsidence caused by pits seepage erosion of deep foundation with suspended diaphragm walls in Shanghai
摘要
Abstract
According to analysis of the phenomenon of internal erosion of soils, the phenomenon of internal erosion of soils is that some soil particles departing from soil skeletons become fluidized ones sharing the same velocity with fluid phase. A physical model for the internal erosion of soils is established, and the correspoding constitutive equation is given. The land subsidence caused by the internal erosion of soils owing to pumping confined groundwater is discussed during the construction of third-class deep foundation pits. The numerical model depends on a practical deep foundation pit consisting of 8 layers of soils of Shanghai area. Based on the mathematical-physical model, four governing equations and the finite element numerical method, the calculated results demonstrate that the internal erosion will cause additional land subsidence and deformation.关键词
渗流侵蚀/地面沉降/控制方程Key words
seepage erosion/land subsidence/governing equation分类
建筑与水利引用本文复制引用
张兴胜,卢耀如,王建秀,WONG Henry,刘琦..上海悬挂式地下连续墙基坑渗流侵蚀引起的沉降研究[J].岩土工程学报,2014,(z2):284-290,7.基金项目
高层次人才科研启动基金项目 （）
