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- W2378562585 abstract "A new lateral-torsional coupling Bouc-Wen model for inelastic seismic dynamic response analysis of plan-asymmetric structure under bidirectional horizontal excitations was developed considering the strength degradation,stiffness deterioration and pinching effect.In this model,the circular yield surface is adopted to describe the coupling effect between biaxial normalized lateral restoring forces,while the pyramidal or spherical yield surface is adopted to consider the coupling effect between lateral and torsional restoring forces.The influence of lateral-torsional coupling on the statistical characteristic of seismic ductility demand of plan-asymmetric structure was investigated using 69 earthquake records.Analysis results show that the spherical yield surface is better than the pyramidal yield surface to describe the lateral-torsional coupling effect.The mean value of seismic ductility demands increases with the decrease of the normalized yield strength and the uncoupled lateral vibration period.The relation between the logarithms of the seismic ductility demand and the normalized yield strength is almost linear,when the uncoupled lateral vibration period is long.The lateral-torsional coupling effect can amplify the variation of the seismic ductility demands obviously,especially when the normalized yield strength is small and the uncoupled lateral vibration period is short." @default.
- W2378562585 created "2016-06-24" @default.
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- W2378562585 date "2011-01-01" @default.
- W2378562585 modified "2023-09-28" @default.
- W2378562585 title "Lateral-torsional coupling Bouc-Wen model for inelastic seismic response analysis of plan-asymmetric structure" @default.
- W2378562585 hasPublicationYear "2011" @default.
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