摘要
结合上海市自然博物馆地下室与地铁共建坑中坑开挖的工程实践,探讨了坑中坑抗隆起安全稳定性的分析方法,并在单一基坑抗隆起安全稳定性系数计算公式的基础上,提出了坑中坑抗隆起安全稳定性系数的计算公式,同时,经过工程实践加以检验.结果表明,所提出的计算公式能够合理评估坑中坑的抗隆起安全稳定性.
An approach was presented to assess the basal heave stability of a kind of distinctive excavations——nested excavations which means that a comparatively small-scale excavation must be located in a large-scale one in some special projects.A new formula targeting on calculating the factor of safety against basal heave of nested excavations was developed in this research,grounding on the widely used conventional computing method for the single excavation.The achievement in this paper has been applied in a typical case in which the structure of a metro station of Line 13 lies beneath basement of the Shanghai Natural History Museum and thus they are co-constructed and form the nested excavations.The results demonstrate that the new formula of this paper could reasonably compute the factor of safety against basal heave of the nested excavations.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2012年第1期36-41,共6页
Journal of Shanghai Jiaotong University
关键词
地下空间
共建
坑中坑
安全稳定性
underground space
co-construction
nested excavations
stability
