位于上海浦东的华泰项目在地下连续墙施工过程中遇到障碍物——原有建筑的钻孔灌注桩需要拔除。介绍了拔桩处理过程及对拔桩过程中共同沟沟底变形、位移的连续监测。监测表明:邻近共同沟拔桩会产生较大变形,随着与共同沟的桩距增大,变形影响指数减小;拔桩过程中如发生套管闷管,共同沟变形会显著增大。通过调整施工顺序、优化施工方案等可减小拔桩对共同沟的沉降位移。 The Huatai project in Pudong, Shanghai, encountered obstacles in the construction of the diaphragm wall - the bored pile of the original building needs to be removed. The process of pulling pile and the continuous monitoring of the deformation and displacement of the common gutter in the process of pulling pile are introduced. The monitoring results show that there is a great deformation in the adjacent common furrow piles. As the pile spacing with the common furrow increases, the deformation influence index decreases. If casing corkscrew occurs during the pulling process, the common furrow deformation will increase significantly. By adjusting the construction sequence and optimizing the construction scheme, the subsidence and displacement of the common ditch can be reduced.