Abstract: Based on the direct analysis of two dimensional finite element method of deep excavation, author makes back analysis of soil parameters in deep excavation considering soil disturbance. According to the uncertainty of deep excavation, the best optimization for back analysis and prediction for displacement of excavation are build up based on back analysis model. The program of back analysis has been drawn up

Key words: soft soil deep excavation, soil parameters, displacement back analysis, construction disturbance, dynamic prediction

摘要： 在研究和应用深基坑开挖二维平面有限元正分析的基础上,针对深基坑工程中的不确定性,在基坑土性参数 反分析中考虑了受施工扰动卸载作用下土体的变形,建立了基坑开挖过程中土性参数位移反分析模型.在此基础 上建立了正反分析优化算法和预报方法,研制了基坑围护结构反分析方法并编制了计算程序

关键词: 深基坑, 土性参数, 位移反分析, 施工扰动, 动态预报