基于地下连续墙变形规律的数值分析研究

Numerical Analysis Based on Deformation Law of Diaphragm Walls

基于基坑监测数据,分析地下连续墙的变形规律,地下连续墙日变化量报警点出现在开挖面附近。基于HS本构模型利用分析软件Plaxis分析监测数据与数值模拟吻合度,分析日变形量的主要影响因素并对影响因素分析,分析建议南京地区的基坑开挖深度为H时,其最保险的地下连续墙厚度约为5%H左右,这与研究对象的地下连续墙设计厚度一致。

Based on excavation monitoring data, deformation law of the diaphragm wall was analyzed. The amount of day alarm point appears near the excavation face. Based on HS constitutive model, Plaxis was used for monitoring data analysis and numerical simulation of fit degree. The main factors on the daily amount of deformation were analyzed. The analysis suggests that when the foundation excavation depth in Nanjing is H, its diaphragm wall thickness was about 5% H.