上海南站南廣場大型基坑圍護(hù)設(shè)計優(yōu)化
陳沛1,2，包旭范2，宋天田1
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(1 同濟(jì)大學(xué)道路與交通工程教育部重點實驗室上海 200092； 2 上海市政工程設(shè)計研究院200092)［提要］大型基坑工程都具有復(fù)雜、工程難度大、成本高等特點，對其進(jìn)行優(yōu)化設(shè)計尤為重要。以上海南站南廣場大型基坑為例，對其設(shè)計進(jìn)行優(yōu)化。優(yōu)化內(nèi)容包括利用場地條件采取可靠措施減少圍護(hù)墻荷載、改變支撐體系、減少支撐道數(shù)、調(diào)整預(yù)留土臺及加固體寬度及高度并設(shè)置與改變支撐體系相適應(yīng)的挖土施工工藝等。實施結(jié)果表明該優(yōu)化方案能節(jié)約工程成本、縮短工期。［關(guān)鍵詞］基坑圍護(hù) 設(shè)計優(yōu)化 地下連續(xù)墻 支撐體系 中心島工法Optimization of Design for Large Foundation Pit Enclosure in Shanghai South Railway Station South Square/Chen Pei1,2, Bao Xufan2, Song Tiantian1(1 Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China; 2 Shanghai Municipal Engineering Design Institute, Shanghai 200092, China)Abstract:A large foundation pit has the feature of complexity, difficulty, and expressivity. So it is important to optimize the design. The design of foundation pit of South Square of South Railway Station in Shanghai is optimized. The aspects of optimization include support system, construction procedure, structure and consolidation, and so on. The results show that the optimized schedule can decrease the cost and time, so it provides a good reference for similar project.Keywords:enclosure of foundation pit; design optimization; diaphragm wall; support system; the method of center island
