帶支腿地下連續(xù)墻的分析研究和應(yīng)用
袁靜1,劉興旺1,曹國強1,饒航2
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袁靜1,劉興旺1,曹國強1,饒航2(1 浙江省建筑設(shè)計研究院, 杭州 310006; 2 浙江大學(xué)建筑工程學(xué)院,杭州 310027)[摘要]地下連續(xù)墻下設(shè)置支腿,可解決其插入深度或入巖深度過長引起的施工困難和成本提高問題,性價比高。針對帶支腿地下連續(xù)墻結(jié)構(gòu)進行了三維有限元分析和研究,并將成果應(yīng)用于杭州黃龍飯店新建工程中。在地下墻不入基巖且坑底插入深度僅2~4m時,在地下連續(xù)墻墻幅底端設(shè)置支腿,支腿承擔(dān)部分水平荷載,同時滿足圍護結(jié)構(gòu)插入深度要求,取得了成功。帶支腿地下連續(xù)墻的成功應(yīng)用,大大降低了施工難度和工程造價,經(jīng)濟效益顯著。[關(guān)鍵詞]基坑圍護;帶支腿地下連續(xù)墻;支撐中圖分類號:TU 476-3,TU 471-12文獻標(biāo)識碼:A文章編號:1002-848X(2012)08-0089-05Research, analysis and engineering application of leg-support diaphragm wallYuan Jing1, Liu Xingwang1, Cao Guoqiang1,Rao Hang2(1 Zhejiang Province Architectural Design and Research Institute, Hangzhou 310006, China; 2 College of Civil Engineering and Architecture, Zhejiang University,Hangzhou 310027, China)Abstract: The cost will be very high when the diaphragm wall inserts rock too long. At the same time, it is difficult to construct. So Leg-support diaphragm wall is researched to solve the above problem by 3D finite element analysis. Diaphragm wall of Huang-long project with 20m-depth excavation didn’t enter into rock stratum because of prohibitive costs. To ensure diaphragm wall’s stability and safety in the situation of 2m insertion depth, two concrete legs are set up under the bottom of the wall successfully.Keywords: deep excavation; leg-support diaphragm wall; brace作者簡介:袁靜,博士,教授級高工,Email:ojin9999@sina.com。參考文獻[1]黃琦, 夏繼君. 帶支腿的地下連續(xù)墻的設(shè)計與施工[J]. 建筑施工, 2001, 22(1): 7-9.[2]劉興旺, 袁靜. 杭州黃龍飯店基坑圍護設(shè)計說明[R]. 杭州, 2005.[3]浙江省工程物探勘察院. 杭州市黃龍飯店巖土工程勘察報告[R]. 杭州,2006.[4]DB 33/T1008—2000和J 10036—2000 建筑基坑工程技術(shù)規(guī)程[S]. 杭州:浙江省標(biāo)準(zhǔn)設(shè)計站, 2000.[5]浙江省建筑設(shè)計研究院. 杭州市黃龍飯店基坑施工監(jiān)測報告[R]. 杭州, 2009.