摘要
现阶段对于大型地下洞室群的地震响应分析还不完全成熟,各种方法都有其优势和不足。采用基于拟静力分析理论的有限元反应加速度法,结合一维无限元动力反应分析方法建立了岩石地下洞室群动力分析的实用方法。在此基础上,结合民治地下洞室群工程建立有限元分析模型,模拟了地震作用下大型洞室群的动力响应并将分析结果与已有文献进行了比较分析。分析表明,将本文实现的拟静力方法应用于岩石地下结构的抗震分析既满足了操作上的简便性,又能够具有足够的可靠性和较好的计算精度,可以为实际工程的抗震分析和设计提供参考。
All of the seismic research methods for underground structures have their superiority and deficiency.Based on finite element response acceleration approach,combined with the infinite element seismic response methods of One-dimensional Rock Mass,a practical method for dynamic analysis of underground structures is established. On the ground of the former results,combined with the practical engineering-Ming Zhi underground cavern project,an elastic-plastic FEM model is established,a complete seismic analysis of underground structures is simulated and the results are compared with the records in present literature. Finally,we can verify that for the underground structure the pseudo-static method in this paper is reliable and the better simulation precision can be achieved. So this method can offer reference for seismic analysis and design of practical engineering.
出处
《地下空间与工程学报》
CSCD
北大核心
2014年第S2期2019-2024,共6页
Chinese Journal of Underground Space and Engineering
关键词
地下结构
地震响应
拟静力法
动力分析
underground structure
seismic response
pseudo-static method
dynamic analysis
