基于岩土参数变化的大变形深基坑安全性分析

Safety Analysis of Deep Deformation Deep Foundation Pit Based on Geotechnical Parameter Variation

摘要: 本文以江西宜春某砂性土场地发生大变形的深基坑实例为对象，采用三维有限元分析软件Midas-GTS分析该基坑在发生大变形后的岩土力学参数变化过程，从而判断大变形后基坑的安全性、预测后续施工过程中基坑的变形趋势和稳定性状态，为进一步施工提供指导性建议。本文成果可供类似工程参考和借鉴。

Abstract: Based on the actual situation of large deformation of a deep foundation pit in Jiangxi province, this paper uses the three-dimensional finite element analysis software Midas-GTS as the simulation analysis tool to reverse the change of the geotechnical parameters after the large deformation of the foundation pit so as to analyze the safety of the foundation pit after the large deformation, and predict the deformation trend of the foundation pit during the follow-up construction so as to provide guidance for further construction. The research results of this paper have certain reference and reference value for similar practical projects.