王卫东，邸国恩，王向军

（华东建筑设计研究院有限公司地基基础与地下工程设计研究所，上海 200002）

 

［摘要］由TRD（trench cutting re-mixing deep wall）工法构建的等厚度型钢水泥土搅拌墙作为一种新型的基坑围护结构，具有地层适用性广、墙体均质性好、受力和隔水性能可靠等特点，首次在基坑面积约14 000m²、开挖深度15.45~17.45m的南昌绿地中央广场基坑工程中得到成功应用。以南昌绿地中央广场基坑工程为背景，详细介绍了由TRD工法构建的等厚度型钢水泥土搅拌墙支护的特点、适用条件、设计和工程实践。

［关键词］TRD工法；等厚度型钢水泥土搅拌墙；垂向搅拌；隔水帷幕

中图分类号：TU463文献标识码：A文章编号：1002-848X(2012)05-0168-04

 

Wang Weidong, Di Guo' en, Wang Xiangjun

(Department of Underground Structure & Geotechnical Engineering, East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China)

 

Abstract: As a newly excavation retaining structure，the constant thickness steel sement-soil wall, which was constructed by the TRD construction method, has the characteristics of extensive applicability in soil layers, high homogeneity, high reliability of mechanical behavior and waterproof, and so on. The first time, it was successfully used in the excavation project of Nanchang Greenland Center Square. The excavation area is about 14 000m², and the excavation depth is about 15.45~17.45m. Based on the project, the characteristics, application conditions, key design technology of the new excavation retaining structure were introduced.

Keywords: TRD construction method; constant thickness steel cement-soil wall; vertical mixing; waterproof wall

*上海市科委课题(10231200600)。

作者简介：王卫东，博士，教授级高级工程师，一级注册结构工程师，Email:weidong_wang@ecadi.com。

 

［1］李星，谢兆良，李进军，等. TRD工法及其在深基坑工程中的应用［J］. 地下空间与工程学报，2011，7（5）：945-950.

［2］安国明，宋松霞 横向连续切削式地下连续墙工法—TRD工法［J］. 施工技术，2005，（S1）：278-282.

［3］江西省勘察设计研究院. 南昌中央广场A区岩土工程勘察报告［R］. 2010.