【摘要】 在多点地震输入(差动输入)计算模型中,时域或频域分析均会涉及到一个重要参数,即影响矩阵R=-K-1ttKts。定性揭示了R的数学和物理意义,定量论证R的固有特征,并给予图解说明和算例论证,证明由R计算得到的拟静力响应在数学意义层面独立于结构的动力反应,而在物理意义层面二者并非相互独立而存在。更多还原

【Abstract】 The influence matrix R=-K_tt^-1K_ts is an important parameter in calculation models,including the models for time or frequency-domain analysis,and for multiple-input structural analysis.In this paper,the mathematical and physical meaning of parameter R are discussed,and its natural characteristics are given and demonstrated through a numerical example.It is shown that the pseudo-static response obtained from R is independent from the dynamic response in mathematical meaning,but not in physical meaning.更多还原