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变刚度半主动控制结构的拟振型分解法
引用本文:吴波,刘汾涛,魏德敏.变刚度半主动控制结构的拟振型分解法[J].华南理工大学学报(自然科学版),2002,30(9):85-90.
作者姓名:吴波  刘汾涛  魏德敏
作者单位:华南理工大学,建筑学院,广东,广州,510640
摘    要:首先将单自由度变刚度半主动控制结构等效为一种特殊线性结构,给出了等效附加刚度比和等效附加阻尼比的定量计算公式;随后,利用上述等效关系建立了多自由度变刚度半主动控制结构的拟振型分解法,并就该方法的计算精度及其修正问题进行了探讨,数值分析结果表明,该方法可以较好地估算多自由度结构的各层最大相对位移和各层层间最大位移。本文工作为变刚度半主动控制结构的实用抗震设计方法的建立奠定了基础。

关 键 词:变刚度半主动控制结构  拟振型分解法  抗震设计  参数控制  等效附加刚度比  等效附加阻尼比
文章编号:1000-565X(2002)09-0085-06

Approximate Mode Decomposition Method for Structures with Semi-active Variable Stiffness Systems
Wu Bo,Liu Fen-tao,Wei De-min.Approximate Mode Decomposition Method for Structures with Semi-active Variable Stiffness Systems[J].Journal of South China University of Technology(Natural Science Edition),2002,30(9):85-90.
Authors:Wu Bo  Liu Fen-tao  Wei De-min
Abstract:First,the equivalent relationship between single-degree-of-freedom structures with active variable stiffness (AVS) systems and special linear structures is established,and the equivalent additional stiffness ratio and the equivalent additional damping ratio are determined.Then,an approximate mode decomposition (AMD) method is proposed for multi-degree-of-freedom (MDOF) structures with AVS systems.The accuracy of the method is discussed and improved using revising parameters.Simulation results indicate that the AMD method is effective in estimating the maximum relative displacements and the maximum interstory drifts of MDOF structures with AVS systems.The study provides a foundation for the seismic design method of structures with AVS systems.
Keywords:semi-active control  mode decomposition  seismic design
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