摘要
地铁明挖车站基坑的整体稳定性是地下结构工程中的主要研究内容之一,随着城市地铁的不断兴建,对基坑工程的要求越来越高。在基坑整体稳定计算过程中,地层条件,内支撑作用等因素对整体稳定计算结果都有不同程度的影响。此文通过对比分析不同地层条件下围护桩+内撑体系整体稳定性的计算原理和结果,详细阐述了钻孔灌注桩+内支撑围护体系中整体稳定性的验算问题,重点研究了土层的摩擦角,黏聚力及内支撑作用对整体稳定性计算结果的影响规律,为类似工程施工提供参考。
Integral stability calculation for retaining protective structures at open-cut station is the main content of underground structure. Require becomes higher and higher in foundation pit engineering as the continuously buriding of urban metro. In the calculation process of integral stability, Some factors can effect the result in deferent degree, such as formation condition,bracing,and so on. Through contrast the result of Integral stability calculation in deferent flrmation condition, this article gives a detailed description about the calculation problem about integral stability of retaining protective structures, and forcus on study the effect of the friction angle, cohesion and supporting function to integral stabilitys, the reference is provided for this kind of structure.
出处
《工程建设与设计》
2012年第9期132-135,共4页
Construction & Design for Engineering
关键词
明挖基坑
内支撑
整体稳定
滑裂面
open-cut foundation pit
brace
integral stability
sliding surface
