深基坑开挖监测与数值模拟

Monitoring and numerical analysis of a deep foundation pit

为掌握深基坑支护变形监测规律,确保基坑工程的稳定性与安全性,以阜新市鑫亚国际酒店基坑工程为研究背景,利用有限元软件ADINA模拟基坑开挖过程中位移变化特征,并与实测数据进行对比分析.研究结果表明:锚杆长度、嵌固土层厚度和基坑周围环境是基坑支护变形的主要因素;通过实测值与模拟值的对比,两者变形趋势和曲线形状比较吻合,该模拟方法可为同种工程条件和支护形式下深基坑工程的监测提供参考.

To master the law of deep foundation pit deformation monitoring, and ensure the stability and security of the foundation pit engineering, this paper studied the foundation pit engineering of in Xin Asia international hotel in Fuxin city, and numerically simulated the displacement variation characteristics in the process of the excavation axe by using finite element software AD1NA, and compared with experimental data and analysis. Draw bolt length, build-in soil layer thickness and foundation pit surrounding environment on the infiuence of the foundation pit deformation law was studied. The results show that the deformation trend of simulated values and measured values and curve shape is consistent, and the simulation results can provide references for monitoring of same type of engineering conditions and supporting form of deep foundation pit engineering.