无锡软土地区某区间隧道盾构施工引起的建筑物沉降分析

摘要

为积累在软土地质条件下盾构施工经验，针对无锡地铁1号线某区间穿越城市中心地带盾构施工，根据其建筑物密集、施工场地狭小、地质情况复杂等特点，采用有限元FLAC2D和Peck经验理论对沿线建筑在盾构施工时的沉降变形进行预测和分析。根据数值分析及Peck沉降估算，地表沉降及建筑物倾斜均满足相关规范要求，采用盾构法施工是安全的。%A running tunnel of Wuxi Mero Line 1, which crosses the downtown area of the city, is bored by shield machines. There are lots of buildings in the congested site and the geology conditions are complex. The settlement of the buildings occurring during the shield tunneling is predicted by finite element FLAC2D method and Peck theory. The results of the numerical analysis and the prediction by Peck theory indicate that the ground surface settlement and the inclination of the buildings meet the requirements of relevant standards and that the shield tunneling is safe.