水平简谐荷载对深基坑开挖变形的影响  

Effect of Horizontal Simple Harmonic Load on the Excavation Deformation of Deep Foundation Pits

作　　者：段绍伟[1] 曾垂军[1] 

机构地区：[1]中南林业科技大学土木工程学院,湘潭411201

出　　处：《地下空间与工程学报》2007年第2期316-318,324,共4页Chinese Journal of Underground Space and Engineering

基　　金：国家自然基金项目(10171029)

摘　　要：深基坑开挖过程中,由于土体内应力重新分配,导致基坑及周边环境产生变形,影响基坑及周围建筑的安全。论文建立了深开挖条件下基坑变形简化分析模型;采用非线性有限元法,计算了水平简谐荷载作用下支护桩的测向位移、坑底土体隆起量以及地表沉降量,并对深开挖条件下产生的动位移和静位移进行了对比分析,得出了具有工程意义的结论。In the process of excavation of deep foundation pits, the deformation of foundation and surrounding environment will be generated due to new stress distribution of soil and their security should be considered. A simplified analysis model of foundation pits is established by using nonlinear FEM, the lateral deformation of pile, basal heave of soil and ground sinking are calculated. After making a comparison between dynamic deformation and static deformation, some valuable conclusions for engineering have been drawn.

关 键 词：深基坑开挖 变形 水平简谐荷载 

分 类 号：TU47[建筑科学—结构工程] TV551.2[建筑科学—土工工程]