【摘要】 针对设置不同耗能器的减震结构在基于等效线性化的振型分解反应谱法进行分析中存在的等效线性化方法不同从而导致动力分析的计算精度和计算量不同的问题,文章采用实模态强行解耦振型分解法和复模态分析法进行对比分析,探讨2种方法在安装有不同耗能器的减震结构动力分析中的适用性.数值分析结果表明,对安装有粘滞耗能器的减震结构为保证计算精度宜采用复模态分析法,而对设置有粘弹性、金属屈服型或摩擦耗能器的减震结构,建议采用实模态强行解耦的振型分解法.更多还原

【Abstract】 The methods of equivalent linearization of different energy dissipation devices are different in analyzing passive energy dissipation structure including different type of energy dissipation device by using of mode-superposition response spectrum method based on equivalent linearization,which results in the differences in computing accuracy and cost in dynamic analysis.For structures separately installed different energy dissipation devices,the authors utilize relatively uncoupled mode-superposition method and complex mode-superposition method for contrast analysis,and probe into the suitability of the two methods in the dynamic analysis of passive energy dissipation structure.Numerical results show that complex mode-superposition method could be better for structure with viscous dampers in order to guarantee accuracy,and relatively uncoupled mode-superposition method is recommended for structure with viscoelastic,metallic or frictional ones.更多还原