(中冶赛迪工程技术股份有限公司，重庆 400013)

［摘要］介绍了国内外现有的地下连续墙的设计情况。重点阐述了上海地区某钢铁企业热轧漩流池圆形深基坑支护二维、三维均匀开挖、非均匀开挖的分析方法和分析过程，以及在不同受力情况下支护墙体的应力、侧向变形、基坑土体的稳定性等。并将二维、三维分析结果与原位测试结果进行对比，提出了圆形地下连续墙的受力模型及变形、配筋等的计算方法，供类似工程参考使用。

［关键词］软土地区；深基坑；圆形支护；二维分析；三维分析；施工过程模拟；原位测试

中图分类号：TU476-3文献标识码：A文章编号：1002-848X(2011)03-0088-04

Three-dimensional numerical analysis and simulation of circular deep excavation in soft ground region

Wang Lin, Xie Liang, Yang Wenqi, Xue Shangling

(CISDI Engineering Co., Ltd., Chongqing 400013, China)

Abstract:The domestic and abroad design of the diaphragm walls were introduced.  The analysis method and the process of two-dimensional ＆ three-dimensional excavation of a round-shaped deep foundation pit in Shanghai were presented. The stress, lateral deformation of the support walls and stability of soil were noted.  Then comparison was made among two-dimensional results, three-dimensional results and the results of site investigation. At last, mechanical model and calculation methods of deformation and reinforcement of round-shaped diaphragm walls were proposed to offer reference to the common engineering application.

Keywords:soft ground region;  deep foundation pit; circular retaining structure; two-dimensional analysis; three-dimensional analysis;  construction simulation; site investigation

作者简介：王林，硕士，高级工程师，一级注册结构工程师， Email：lin.wang@cisdi.com.cn。

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