Rayleigh波作用下地下结构地震反应影响分析
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摘要
采用基于时域粘弹性人工边界的Rayleigh波输入方法,进行了土-地下结构相互作用体系在Rayleigh波作用下的动力时程反应分析,对Rayleigh波作用下地下结构的地震反应特性进行研究。重点讨论了地下结构材料强度、结构厚度以及土层刚度等因素对Rayleigh波作用下地下结构地震反应的影响。结果表明Rayleigh波对浅埋地下结构的地震动力反应影响显著,将使结构产生较大的内力与变形,在地下结构抗震设计尤其是浅埋地下结构的抗震设计时应予以足够的重视。
The dynamic time history analysis of soil-structure systems under propagation of Rayleigh waves was carried out by using the Rayleigh wave input method based on viscous-spring artificial boundary,and the seismic response of underground structures under propagation of Rayleigh waves was studied.The influences of structure material strength,structure thickness and soil stiffness were investigated in detail.Numerical analysis results show the large effect of Rayleigh wave on the dynamic response of shallow underground structures.The internal force and deformation caused by Rayleigh wave are significant,so the influences should be taken into account in seismic design of underground structures.
The dynamic time history analysis of soil-structure systems under propagation of Rayleigh waves was carried out by using the Rayleigh wave input method based on viscous-spring artificial boundary,and the seismic response of underground structures under propagation of Rayleigh waves was studied.The influences of structure material strength,structure thickness and soil stiffness were investigated in detail.Numerical analysis results show the large effect of Rayleigh wave on the dynamic response of shallow underground structures.The internal force and deformation caused by Rayleigh wave are significant,so the influences should be taken into account in seismic design of underground structures.
引文
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[2]刘晶波,王文晖,刘祥庆.不同深度与倾角断层破碎带对Rayleigh波传播与场地地震动反应的影响研究[J].振动与冲击,2013,32(4):111-115.LIU Jing-bo,WANG Wen-hui,LIU Xiang-qing.Study on theeffect of fault fracture zone with various depths and rakeangles to the spreading of Rayleigh wave and ground motion[J].Journal of Vibration and Shock,2013,32(4):111-115.
[3]Makris N.Soil-pile interaction during the passage of Rayleighwaves:an analytical solution[J].Earthquake Engineeringand Structural Dynamics,1994,23(2):153-167.
[4]刘晶波,李彬.Rayleigh波作用下地下结构的动力反应分析[J].工程力学,2006,23(10):132-135.LIU Jing-bo,LI Bin.Dyna-mic response analysis ofunderground structures during propagation of rayleigh waves[J].Engineering Mechanics,2006,23(10):132-135.
[5]夏唐代,蔡袁强,陈云敏.利用瑞利面波特性计算动力响应的进一步探讨[J].岩土工程学报,1996,18(3):28-34.XIA Tang-dai,CAI Yuan-qiang,CHEN Yun-min.Discussion on calculating dynamic response of soils usingRayleigh wave characteristics[J].Chinese Journal ofGeotechnical Engineering,1996,18(3):28-34.
[6]王立忠,冯永正,柯瀚.瑞利波作用下成层地基中单桩横向振动分析[J].振动工程学报,2001,14(2):205-210.WANG Li-zhong,FENG Yong-zheng,KE Han.Lateraldynamic response of single pile in multiple layers soil duringthe passage of Rayleigh waves[J].Journal of VibrationEngineering,2001,14(2):205-210.
[7]冯永正,王立忠,陈云敏.瑞利波作用下双层地基中群桩横向动力响应[J].振动工程学报,2001,14(3):284-291.FENG Yong-zheng,WANG Li-zhong,CHEN Yun-min.Lateral dynamic response of pile group in double-layered soilsduring the passage of Rayleigh waves[J].Journal ofVibration Engineering,2001,14(3):284-291.
[8]Pham C V,Nguyen T K L.An approximate secular equationof Rayleigh waves propagating in an orthotropic elastic half-space coated by a thin orthotropic elastic layer[J].WaveMotion,2012,49(7):681-689.
[9]Cao Y M,Xia H,Lombaert G,et al.Solution of moving-load-induced soil vibrations based on the betti-rayleighdynamic reciprocal theorem[J].Soil Dynamics andEarthquake Engineering,2010,30:470-480.
[10]王海东,尚守平,周志锦,等.瑞利波作用下桩土相互作用横向动力响应计算研究[J].湖南大学学报,2009,36(11):1-5.WANG Hai-dong,SHANG Shou-ping,ZHOU Zhi-jin,et al.Computational research on the horizontal dynamic response ofsingle-pile considering pile-soil interaction during passage ofRayleigh Waves[J].Journal of Hunan University,2009,36(11):1-5.
[11]谷音,于志敏.Rayleigh波作用下桩-土-桥梁结构动力相互作用问题研究[J].振动与冲击,2011,30(12):98-102,134.GU Yin,YU Zhi-min.A pile-soil-bridge structure withdynamic interaction under Rayleigh wave excitation[J].Journal of Vibration and Shock,2011,30(12):98-102,134.
[12]Liu J B,LY D.A direct method for analysis of dynamicsoil-structure interaction based on interface idea[A].In:Zhang Chuhan,Wolf JP edit.Dynamic Soil-StructureInteraction.International Academia Publishers,1997:258～273.
[13]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.LIU Jing-bo,LYan-dong.A direct method for analysis ofdynamic soil-structure interaction[J].China CivilEngineering Journal,1998,31(3):55-64.
[14]李彬.地铁地下结构抗震理论分析与应用研究[D].北京:清华大学,2005.
[15]Wang J N.Seismic design of tunnels:A simple state-of-the-art design approach[M].New York:Parsons BrinckerhoffQuade and Douglas Inc.,1993.
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