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（上海申元巖土工程有限公司， 上海 200040）

［摘要］通過(guò)計(jì)算軟件及有限元計(jì)算并結(jié)合具體工程實(shí)例分析，研究坑外降水對(duì)不同類(lèi)型深基坑圍護(hù)結(jié)構(gòu)變形、受力及周邊地面沉降的影響，并得出相應(yīng)結(jié)論，對(duì)坑外降水在深基坑中的應(yīng)用提供參考和建議。

［關(guān)鍵詞］坑外降水； 變形； 受力； 地面沉降； 最佳降水水位； 有限元

中圖分類(lèi)號(hào)： TU973 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)： 1002-848X(2015)S2-0135-04

作者簡(jiǎn)介：徐燕，碩士，工程師，Email：yanxu3686@126.com。

Research and analysis of the influence of dewatering outside excavation on deep foundation pit

Xu Yan

（Shanghai Shen Yuan Geotechnical Engineering Co., Ltd., Shanghai 200040, China）

Abstract: Through calculation software and finite element calculation, combining with engineering examples, the influence of dewatering ouside excavation on deformation, stress state and surrounding ground settlement of diffirent types of deep foundation pit were researched. Then, some conclusions were drawn, which provide references and suggestions on the application of dewatering ouside excavation to deep foundation pit.

Keywords: dewatering outside excavation; deformation; stress state; surrounding ground settlement; optimal dewatering level; finite element