地鐵隧道附近軟土深基坑設(shè)計與施工關(guān)鍵技術(shù)分析
楊德春1，劉建國2
- 摘 要
-
楊德春1，劉建國2（1 廣州地鐵設(shè)計研究院有限公司，廣州 510010； 2 蘇州軌道交通有限公司，蘇州 251001）［摘要］蘇州工業(yè)園區(qū)公積金大廈深基坑工程與已建成的軌道交通1號線地鐵隧道結(jié)構(gòu)相鄰，基坑圍護結(jié)構(gòu)設(shè)計時需對地鐵結(jié)構(gòu)內(nèi)力與變形進行嚴格控制，通過對基坑支護體系、土方開挖和拆撐方式進行三維數(shù)值模擬分析，得出地鐵隧道結(jié)構(gòu)附加變形及應(yīng)力變化在可控范圍內(nèi)，分析軟土深基坑設(shè)計與施工風險控制關(guān)鍵技術(shù)，成功進行潛在風險預報及預警。［關(guān)鍵詞］軟土深基坑；支撐體系；結(jié)構(gòu)變形；數(shù)值模擬分析中圖分類號：TU471-8文獻標識碼：A文章編號：1002-848X(2012)07-0109-06Key technology analysis of soft soil deep foundation pit design and construction near the subway tunnelYang Dechun1, Liu Jianguo2(1 Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510010, China；2 Suzhou Rail Transportation Company Limited, Suzhou 251001, China)Abstract: Deep foundation pit of SIP Suzhou Industrial Park Provident Fund Building is near Suzhou rail transit No.1 subway tunnel structure. The internal force and deformation of the subway structure-should be controlled in the design of the foundation pit enclosure structure. Bracing, excavation and the support dismantlement method were analyzed with the numerical simulation. It is obtained that the additional deformation and stress variation of the subway tunnel structure are in the controllable range. The soft soil deep foundation pit design and construction risk control technology were analyzed. The potential risk forecasting and early warning were successfully proceeded.Keywords: soft soil deep foundation pit; support system; structural deformation; numerical simulation analysis作者簡介：楊德春，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，注冊土木（巖土）工程師，注冊造價工程師，注冊監(jiān)理工程師，Email：yangdechungz@126.com。參考文獻［1］汪小兵，賈堅.深基坑開挖對既有地鐵隧道的影響分析及控制措施［J］.城市軌道交通研究，2009（5）：16-21.［2］羅先起，沈輝.深基坑對已建蘇州軌道交通1號線工程的影響分析報告［R］.2010.［3］林銘潮,崔藝斌新建深基坑對已建地鐵工程的影響分析［J］廣州建筑,2010（3）：32-36.［4］張明遠.基坑施工對緊鄰地鐵區(qū)間隧道的影響分析［J］.巖土力學,2011,3(3):33-37.［5］高廣運，高盟，楊成斌，等. 基坑施工對運營地鐵隧道的變形影響及控制研究［J］.巖土力學學報,2010(3):47-51.［6］威科駿，王旭東.鄰近地鐵隧道的深基坑開挖分析［J］.巖土力學與工程學報,2005,11(24):35-39.
