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［摘要］城市軌道交通地鐵車(chē)站型式日益復(fù)雜，車(chē)站基坑工程受到的限制逐漸增多，需要設(shè)計(jì)者綜合運(yùn)用多種圍護(hù)方法綜合考慮。以北京地鐵某車(chē)站基坑工程為例，對(duì)比分析了各種常用圍護(hù)結(jié)構(gòu)的優(yōu)缺點(diǎn)，詳細(xì)研究了土釘+錨索復(fù)合型圍護(hù)體系的特點(diǎn)，并對(duì)其適用范圍進(jìn)行了探討。從該工程實(shí)例情況來(lái)看，復(fù)合型圍護(hù)體系簡(jiǎn)單明了，受力明確，施工速度快，施工作業(yè)面大，比較經(jīng)濟(jì)安全。
［關(guān)鍵詞］復(fù)合型; 基坑支護(hù); 錨索; 圍護(hù)體系; 地鐵車(chē)站
中圖分類(lèi)號(hào)：TU753.1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)09-0147-04
Application of composite support system in a metro pit excavation
Jia Minghui，Shi Yu，He Youxun(Beijing Institute of Architectural Design，Beijing 100045， China)
Abstract:Forms of subway station of urban rail transport are increasingly complex, and restrictions are gradually increased for the pit excavation. Design need to use a variety of support system to ensure the safety of foundation.Based on a subway station of Beijing, characteristics of soil nails and cable of composite support system are analyzed, and its scope of application is studied. Results from engineering application prove that the composite support system is briefness, the approach of the force passing is clear, construction speed is quick, and it is more economic and secure.
Keywords:metro pit; excavation; composite support system; foundation pit; anchor
作者簡(jiǎn)介：賈明輝，碩士，工程師，Email：jmh010@163.com。
參考文獻(xiàn)
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［2］邢如飛.放坡+土釘墻支護(hù)在地鐵基坑工程中的應(yīng)用［J］.鐵道標(biāo)準(zhǔn)設(shè)計(jì),2009(10).
［3］北京市地方標(biāo)準(zhǔn).DB11/489—2007建筑基坑支護(hù)技術(shù)規(guī)程［S］.
［4］楊林德, 仇圣華, 楊志錫. 基坑圍護(hù)位移量及其穩(wěn)定性預(yù)測(cè)［J］.巖土力學(xué), 2001, 2(3): 267-270.