深基坑开挖对墙后地表沉降影响的有限元分析

摘要

Based on the Wuhan Subway Wang Jiadun east subway station,respectively using Peck theory and FEM methods for the prediction of deep foundation pit excavation on the ground surface settlemen behind the wall analyzes the security problems of underground continuous wall supporting deep foundation excavation.The forecast results show that the effect of foundation fit excavation on surrounding surface settlemen behind the wall is under control and get the distribution rule of the foundation pit excavation on the ground surface settlement behind the wall.Results agree with peck theory results,confirm the feasibility,application and accuracy.%针对武汉地铁车站王家墩东站，分别采用派克(Peck)理论和 ANSYS有限元分析方法对深基坑开挖对墙后地表沉降影响进行预测，分析了在地下连续墙支护方式下的基坑安全性问题。预测结果表明：基坑开挖对墙后地表沉降影响在控制范围内；并提出了该基坑墙后地表沉降的分布规律。规律与Peck理论结果吻合，互相证实了 Peck理论和 ANSYS程序应用的可行性、适用性和正确性。