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Analysis of Elasto-plastic Response Spectra


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Analysis of Elasto-plastic Response Spectra
DING Jian-guo1CHEN Wei 2
1. School of Sciences,NUST,Nanjing 210094,China; 2. College of Civil Engineering,Southeast University,Nanjing 210090,China
strength reducing coefficients ductility coefficients elasto-plastic response spectra
TU311. 3
In order to analyse the elasto-plastic response of structure under the seismic action, this paper studies an elasto-plastic response spectrum. The basic equation of an elasto-plastic response spectrum is established and the constant-ductility strength demand spectra are calculated. The methods of elasto-plastic spectra established by relationship among the strength reducing coefficients and the ductility coefficients as well as the structural periods are described. Four kinds of elasto-plastic response spectra are deduced from referring to the elastic response spectrum. The calculation result shows that the elasto-plastic response spectra proposed here are similar to Fan Lichu’s elasto-plastic response spectra under the condition of hard soil and small ductility coefficient,and the elasto-plastic response spectra proposed here are relatively safe under the condition of soft soil and large ductility coefficient.


[1] GB50011—2001. 中华人民共和国抗震设计规范 [S]. 北京: 中国建筑工业出版社, 2001.
[2] Applied Technology Council. ATC-40. Vol. 1. Seismic evaluation and retrofit of concrete buildings[S]. 1996.
[3] Miranda E. Evaluation of site-dependent inelastic seismic design spectra[J]. Journal of Struct Engng ASCE, 1993, 117( 8) : 1319-1338.
[4] Vidic T,Fajfar P,Fischinger M. Consistent inelastic design spectra: Strength and displacement[J]. Earthquake Engineering and Structural Dynamics, 1994, 24( 5) : 507 -521.
[5] 卓卫东,范立础. 结构抗震设计中的强度折减系数研 究[J]. 地震工程与工程振动, 2001, 21( 1) : 84-88.
[6] Berrill J B,Priestley M J,Chapmaan H E. Design earthquake loading and ductility demand[A]. Bulletin of the New Zealand National Society for Earthquake Engineering [C]. Wellington,New Zealand: New Zealand Society for Earthquake Engineering Inc, 1980, 13( 3) : 232-241.
[7] 丁建国. 弹塑性反应谱及其在抗震设计中应用[J]. 南京理工大学学报, 2007, 31( 6) : 780-783.
[8] Elghadamsi F E,Mohraz B. Inelastic earthquake spectra [J]. Earthquake Engineering and Structural Dynamics, 1987, 15: 91-104.
[9] Miranda E, Jorge R G. Influence of stiffness degradation on strength demands of structures built on soft soil sites [J]. Engineering Structures, 2002, 24: 1271-1281.


Last Update: 2012-10-23