上海文化广场工程承压水控制对周边环境影响实例研究

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摘要以上海文化广场工程为例，结合现场抽水试验分析所得参数，采用显式有限差分法建立了基坑开挖降水的三维流–固耦合模型。首先，将计算所得基坑施工期间（开挖+降水）的位移与实测位移进行了比对验证；其次，对完全由降承压水引起的地表沉降分布进行了模拟，并与降水沉降两步预估法计算所得结果进行了比较。实例分析结果表明，该模型能较好地模拟实际开挖过程中基坑的变形规律及周边环境影响，其计算所得降承压水引起的地表沉降分布与两步预估法基本吻合，可为类似降承压水引起的环境影响研究提供一种新思路。

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	张刚
	廖斌

关键词 ：承压水降水, 基坑, 流–固耦合, 地表沉降

Abstract： For the project of Shanghai Cultural Plaza, according to the parameters gained from in-situ tests, a 3-D fluid-solid coupling model for groundwater seepage is established based on 3-D finite difference method. First, the calculated displacement is compared with the measured one during the period of construction. Secondly, the surface subsidence caused by dewatering is simulated and compared with the measured one based on the two-step estimate method. The results of engineering example show that the 3-D fluid-solid coupling model can simulate the deformation rules and environmental effect quite well. The calculated displacement caused by dewatering is consistent with the calculated one by the two-step estimate method. It may provide a new research idea for the relevant researches on confined water.

Key words： dewatering of confined water foundation pit fluid-solid coupling surface settlement

收稿日期: 2012-11-13 出版日期: 2012-11-13

TU470

作者简介: 张刚（1977– ），男，博士，高级工程师，主要从事基坑工程承压水控制、土体力学细观模拟和土体流固耦合方面的研究工作。

引用本文:

张刚, 廖斌, . 上海文化广场工程承压水控制对周边环境影响实例研究[J]. 岩土工程学报, 2012, 34(suppl): 715-720. ZHANG Gang，LIAO Bin, . Effect of controlling confined water on surrounding environment ofShanghai Cultural Plaza. Chinese J. Geot. Eng., 2012, 34(suppl): 715-720.

链接本文:

http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/ 或 http://manu31.magtech.com.cn/Jwk_ytgcxb/CN/Y2012/V34/Isuppl/715

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