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LI Zheng-liang, FAN Wen-liang, ZHOU Zhi-xiang. THE MODE-SUPERPOSITION METHOD FOR PASSIVE ENERGY DISSIPATION STRUCTURES BASED ON PERTURBATION METHOD AND EQUIVALENT LINEARIZATION[J]. Engineering Mechanics, 2005, 22(3): 16-20.
Citation: LI Zheng-liang, FAN Wen-liang, ZHOU Zhi-xiang. THE MODE-SUPERPOSITION METHOD FOR PASSIVE ENERGY DISSIPATION STRUCTURES BASED ON PERTURBATION METHOD AND EQUIVALENT LINEARIZATION[J]. Engineering Mechanics, 2005, 22(3): 16-20.
shu

THE MODE-SUPERPOSITION METHOD FOR PASSIVE ENERGY DISSIPATION STRUCTURES BASED ON PERTURBATION METHOD AND EQUIVALENT LINEARIZATION

  • Faculty of Civil Engineering, Chongqing University, Chongqing, 400045, China;2. Chongqing JiaoTong University, Chongqing, 400074, China

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  • Received Date: October 19, 2003
  • Revised Date: January 09, 2004
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  • It is an economical and effective method to enhance the aseismatic capability of buildings by using passive energy dissipation structures. But in the analysis of this type of structure with mode-superposition response spectrum method based on equivalent linearization, it is rather difficult and time-consuming to obtain satisfactory results. An accurate expansion method for modes based on the improved first-order perturbation is presented in this paper. A relatively uncoupled mode-superposition method and a modified first-order perturbation method are derived. A numerical example shows that the present strategy is correct and effective.
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