（江苏建院营造股份有限公司， 苏州 215100）

［摘要］以上海某基坑工程为背景，通过对地下连续墙成槽施工时突遇障碍桩的应对措施进行分析，研究了地下空间开发中障碍桩清除施工的方法归类、设备选型和技术应对措施。此外，依据地下连续墙槽段内的拔桩施工过程记录和清障效果，总结了清障前的各项准备工作以及在应用高压泥浆冲切拔桩法时应把握好“旋、切、抓、拉”4个施工关键点。

［关键词］基坑工程； 障碍桩； 连续墙槽段； 拔桩

中图分类号：TU753-3文献标识码：A文章编号：1002-848X(2018)01-0101-04

Construction method analysis of barrier pile removal in groove of diaphragm wall

Li Hu, Gao Qiang

(Jiangsu Jianyuan Construction Co., Ltd., Suzhou 215100， China)

Abstract:Taking foundation pit engineering in Shanghai as the background, measures to deal with the obstacle pile encountered during the construction of groove of diaphragm wall were analyzed. The method classification, equipment selection and technical countermeasures for the removal of obstacle piles in the development of underground space were studied. In addition, according to the construction process recording and pile removal effect of the groove of diaphragm wall, the preparatory work before the clearance was summarized and the four key construction points of “spin, cut, catch, pull” in application of the high pressure mud punching and pulling pile method were summarized.

Keywords:foundation pit engineering; obstacle pile; groove of diaphragm wall; pile removal

作者简介：李虎，硕士，工程师，Email:Lihu890427@163.com。