土-结构相对刚度对地下矩形结构地震反应影响规律的研究
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摘要
针对矩形结构,采用拟静力方法详细探讨了土层刚度及土-结构相对刚度对结构地震反应的影响规律。结果表明,针对文中所研究的土体,地下结构设计时,要避开剪切波速为100m/s范围的土体;对于土层刚度的选择最好控制在200～400m/s之间。这对地下矩形结构的抗震分析、设计具有一定的参考价值。
Pseudo-static method was used to analyze the influence of such factors as the stiffness of the soil and the relative stiffness on the seismic response of underground rectangular structure.In designing underground structures soil with shear wave velocity being about 100 m/s should be avoided.The best choice for soil stiffness should be between 200 m/s and 400 m/s.The results may serve as reference to seismic analysis and design of underground rectangular structure.
Pseudo-static method was used to analyze the influence of such factors as the stiffness of the soil and the relative stiffness on the seismic response of underground rectangular structure.In designing underground structures soil with shear wave velocity being about 100 m/s should be avoided.The best choice for soil stiffness should be between 200 m/s and 400 m/s.The results may serve as reference to seismic analysis and design of underground rectangular structure.
引文
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[2]Penzien J.Seismically-induced Racking of Tunnel Linings[J].Int J Earthquake Eng Struct Dyn,2000,29:683-691.
[3]蒋洪胜,侯学渊.装配式圆形隧道与软土地层的相对刚度分析[J].岩石力学与工程学报,2004,23(13):2262-2256.
[4]Wang J N.Seismic Design of Tunnels:A State-of-the-Art Approach[M].New York:Parsons,Brinckerhoff,Quade andDouglas Inc,1993.
[5]首培杰,刘增武,朱镜清,等.地震波在工程中的应用[M].北京,地震出版社,1982.
[6]陶明星.土-地下结构动力相互作用有限元分析[D].西安,西北工业大学,2004.
[7]中国建筑科学研究院.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]刘如山,石宏彬.地下结构横断面抗震计算中的拟静力方法的研究[J].工程抗震与加固改造,2005,27(S1):148-154.
[9]Power M S,Rosidi D,Kaneshiro J.Strawman:Screening,Evaluation and Rtrofit Design of Tnnels[R].New York:Re-port Draft National Center for Earthquake Engineering Research,1996.
[10]王松涛,曹资.现代抗震设计方法[M].北京:中国建筑工业出版社,1997.
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