［摘要］城市轨道交通地铁车站型式日益复杂，车站基坑工程受到的限制逐渐增多，需要设计者综合运用多种围护方法综合考虑。以北京地铁某车站基坑工程为例，对比分析了各种常用围护结构的优缺点，详细研究了土钉+锚索复合型围护体系的特点，并对其适用范围进行了探讨。从该工程实例情况来看，复合型围护体系简单明了，受力明确，施工速度快，施工作业面大，比较经济安全。
［关键词］复合型; 基坑支护; 锚索; 围护体系; 地铁车站
中图分类号：TU753.1文献标识码：A文章编号：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
作者简介：贾明辉，硕士，工程师，Email：jmh010@163.com。
参考文献
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