软土地区盾构隧道切削群桩基础对上方建筑物的影响研究

Study on effect of cutting pile group foundation in soft soil shield tunneling on buildings above

为探明软土地区盾构隧道切削群桩基础对上方建筑物的影响,对某地铁区间切削群桩基础建筑物的实际工程进行三维数值仿真分析,并将分析结果与现场监测数据进行对比。结果表明,在经过有针对性的预加固处理后再进行群桩基础切削,群桩基础受力和变形是有限可控的,满足相关规范要求。

In order to investigate the effect of cutting pile group foundation in soft soil shield tunneling on the buildings above,this paper makes a three-dimension numerical simulation analysis of the actual project of a metro section with cutting pile group foundation of the vicinity building,and compares the results with the on-site monitoring data.The results show that for cutting pile group foundation after the targeted pre-reinforcement,pile group foundation stress and deformation are limited and controllable,and meet the requirements of related specifi cations.