邻近拟建地铁深基坑的现有基坑加固与改造设计
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（苏州设计研究院股份有限公司，苏州 215021）[摘要]苏州工业园区某工程地下室由于局部地下一层拆除，形成8m深的现有基坑。其南侧9～14m远深达15.3m的深基坑即将开挖。现有基坑也将继续挖深4m。本文详细介绍了现有基坑的加固，以及现有基坑继续挖深时的基坑支护设计。计算分析及监测结果表明，本设计安全可靠，可供类似工程设计参考。[关键词]深基坑;支护结构;加固中图分类号：TU753.8 文献标识码：A 文章编号：1002-848X(2013)S1-0898-04Reinforcement and renovation of an existing pit adjacent to a new subway pitTang Xiangyu , Qiu Zhibing（Suzhou Institute of Design Co.,Ltd.,Suzhou 215021,China）Abstract: A pit of 8 meters in depth was formed due to partly demolishing an existing basement. Further excavation, which is adjacent to a new subway pit, 15.3 meters in depth, 9 to 14 meters away, is supposed to be excavated lately. The reinforcement method of the existing pit, and the bracing structure of the following excavation of the pit are reported in this paper. The successful practice in this project, together with the site monitoring date provided can be utilized as reference to similar projects.Keywords: deep pit; bracing structure; reinforcement作者简介： 汤翔宇，工学硕士，研究员级高级工程师，Email:tyc20010408@163.com。
