【作者】 孙海霞； 赵文； 王钊宇； 于建军；

【Author】 SUN Haixia~(1,2),ZHAO Wen~2,WANG Zhaoyu~2,YU Jianjun~3 (1.Shenyang University of Technology,Shenyang 110178; 2.Northeastern University,Shenyang 110004; 3.China Railway 9 th Bureau Group Co.,Ltd.,Shenyang 110013 )

【机构】 沈阳工业大学； 东北大学； 中铁九局集团有限公司；

【摘要】 为研究地铁盾构法施工对地表沉降的影响情况,利用盾构施工现场监测数据结合三维有限单元法数值模拟对地表沉降的变化情况进行研究。根据监测数据结果,明确施工推进时对纵向地表的影响范围,横向监测数据随着盾构不断推进的变化规律。利用ABAQUS软件,以实际的地层参数、施工参数等及相应的地面沉降数据作为样本,建立三维有限元模型,与施工中的地表沉降监测值进行对比,计算结果基本满意。现场监测沉降值在允许范围之内,模拟值和实测值比较接近,为预测地表沉降提供参考。更多还原

【Abstract】 The ground surface settlement induced by shield tunneling of Metro works is studied on basis of the monitoring results and 3D FEM simulation.The scope of the longitudinal ground surface settlement induced by shield tunneling and the rule of the lateral ground surface settlement are determined.3D FEM model is established on basis of the actual ground parameters,construction parameters and ground surface setdement data by means of ABAQUS program.The simulated values are compared with the measured values,which indicates that the simulation results are satisfactory.The measured settlement values are within the allowance scope and the simulated values agree well with the measured values. The paper can be served as reference for the prediction of the ground surface settlement of other works in the future.更多还原