单桩横向非线性运动地震响应简化分析
|
摘要
采用退化的Bouc-Wen模型和动力Winkler地基梁模型,建立了一个单桩横向非线性运动地震响应的简化分析模型,将自由场位移,作为沿桩轴均匀分布的非线性弹簧和频率相关的粘壶的支撑运动,利用运动响应因子的概念以及相应的计算方法,计算并讨论了地震运动过程中,单桩横向非线性运动地震响应问题。计算结果表明,对于单桩横向非线性运动地震响应问题的简化分析,所提出的模型在物理上是合理的。
Based on the degraded Bouc-Wen model and Beam-on-Dynamic-Winkler-Foundation model,a simplified analysis model for the lateral nonlinear kinematic seismic responses of single pile is constructed,where the free-field motion is regarded as a supporting motion of nonlinear springs and frequency-dependent dashpots.With the aid of the concept of the kinematic response factors and the corresponding methods,the lateral nonlinear kinematic seismic responses of single pile are simulated and discussed to verify the reasonability of this model.
Based on the degraded Bouc-Wen model and Beam-on-Dynamic-Winkler-Foundation model,a simplified analysis model for the lateral nonlinear kinematic seismic responses of single pile is constructed,where the free-field motion is regarded as a supporting motion of nonlinear springs and frequency-dependent dashpots.With the aid of the concept of the kinematic response factors and the corresponding methods,the lateral nonlinear kinematic seismic responses of single pile are simulated and discussed to verify the reasonability of this model.
引文
[1]Gazetas G,Mylonakis G.Seismic soil-structure interaction:New evidence and emerging issues[J].Dakoulas P,Yegian MK,Holtz R D.Geotechnical Earthquake Engineering and SoilDynamics III:ASCE,1998,Ⅱ:1119-1174.
[2]刘忠,沈蒲生,陈铖.单桩横向非线性动力响应的简化分析模型[J].工程力学,2004,21(5):46-51.
[3]Bouc R.Modele mathematique d'hysteresis[J].Acustica(inFrench),1971,21:16-25.
[4]Wen Y K.Method for random vibration of hysteretic systems[J].Journal of Engineering Mechanics,Div ASCE,1976,102,(EM2):249-263.
[5]Baber T T,Wen Y K.Random vibration of hysteretic,de-grading systems[J].Journal of Engineering Mechanics,Divi-sion ASCE,1981,107(6):1069-1087.
[6]Dobry R,Vinecte E,O'Rourke M J,et al.Horizontal stiffnessand damping of single piles[J].Journal of the GeotechnicalEngineering Division,ASCE,1982,108(GT3):439-459.
[7]Roesset J M.Soil amplification of earthquakes[M].Desai CS,Christian J T.Numerical Methods in Geotechnical Engi-neering.New York:McGraw-Hill,1977.
[8]Kaynia A M,Kausel E.Dynamics of piles and pile groups inlayered soil media[J].Soil Dynamics and Earthquake Engi-neering,1991,10(8):386-401.
[2]刘忠,沈蒲生,陈铖.单桩横向非线性动力响应的简化分析模型[J].工程力学,2004,21(5):46-51.
[3]Bouc R.Modele mathematique d'hysteresis[J].Acustica(inFrench),1971,21:16-25.
[4]Wen Y K.Method for random vibration of hysteretic systems[J].Journal of Engineering Mechanics,Div ASCE,1976,102,(EM2):249-263.
[5]Baber T T,Wen Y K.Random vibration of hysteretic,de-grading systems[J].Journal of Engineering Mechanics,Divi-sion ASCE,1981,107(6):1069-1087.
[6]Dobry R,Vinecte E,O'Rourke M J,et al.Horizontal stiffnessand damping of single piles[J].Journal of the GeotechnicalEngineering Division,ASCE,1982,108(GT3):439-459.
[7]Roesset J M.Soil amplification of earthquakes[M].Desai CS,Christian J T.Numerical Methods in Geotechnical Engi-neering.New York:McGraw-Hill,1977.
[8]Kaynia A M,Kausel E.Dynamics of piles and pile groups inlayered soil media[J].Soil Dynamics and Earthquake Engi-neering,1991,10(8):386-401.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心