An approximate method for analyzing seismic response of non-proportionally damped base isolated structures in time domain is derived by combining real mode superposition and Laplace transform method.

• 采用子结构瑞利阻尼模型表达隔震体系的非比例阻尼矩阵,将实振型分解法与拉普拉斯变换方法联合应用,建立了任意多自由度非比例阻尼隔震体系时域动力响应的工程算法。