摘要
重庆市主城区地下洞室分布较广,用岩质洞室顶板作为持力层的案例较多,地方标准中,洞室地基的破坏模式主要有冲切破坏模式,而卸荷拱模式只是评价围岩体稳定性的模式,对洞室地基稳定性计算模式单一。主要根据典型工程实例分析,建立了岩质洞室地基剪切破坏计算方法,计算过程简便,岩体计算参数易于获取,对洞室地基计算补充了一种新方法,便于全面评价洞室地基稳定性需要。同时也和冲切破坏模式进行对比,对岩质洞室地基稳定性计算方法作了补充完善。
Underground caverns have a wide distribution in the Main District of Chongqing. There are many cases of using the roof as the bearing stratum. This paper established a shear failure calculation method for the foundation, which is simple in calculation process, easy to get the rock parameters and serves as a new method for the foundation calculation and for completing the stability study of rock foundation with caverns by comparing it to the punching failure mode.
出处
《地下空间与工程学报》
CSCD
2008年第6期1033-1035,1070,共4页
Chinese Journal of Underground Space and Engineering
关键词
洞室地基
剪切破坏
稳定性
模式
冲切破坏
foundation with caverns
shear failure
stability
mode
punching failure
