摘要
根据南京市地铁四号线中保站的监测数据,分析地下连续墙的变形特征,发现基坑开挖过程中围护结构变形具有明显时空效应规律;发现随着开挖深度增加,地连墙侧移量在基底附近达到最大值;发现地连墙的变化呈现类似抛物线,地连墙侧向位移随着自身刚度增加而减小.结合平面有限元计算分析软件plaxis,利用HS本构模型对地连墙变形影响因素进行分析研究,结果建议南京地区的开挖深度为H时,其地连墙的厚度取（2.5％～3.5％）H.
According to the monitoring data mediator Nanjing Metro Line station, this paper analyzed the deformation characteristics of the underground continuous wall. It is found that the law of space effect is quite obvious during excavation retaining structure deformation ; and the amount of land in the vicinity of the lateral wall of the base reaches a maximum with the increasing of excavation depth. It is also found that a wall changes similar parabola, the lateral displacement of the wall decreases with in- creasing of their stiffness and. Combined with plane finite element analysis software plaxis and HS wall deformation constitutive model, the main factors were analyzed. The analysis results suggest that, the thickness of its walls takes （2.5% - 3.5% ） H when the Nanjing area of excavation depth is H.
出处
《河北工程大学学报（自然科学版）》
CAS
2014年第3期31-34,51,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
中央高校基本科研业务费项目(2010B03414)
关键词
深基坑
围护墙体
侧向位移
有限元分析
foundation pit
retaining wall
lateral displacement
finite element analysis
