摘要
本文考虑地震动过程的非平稳性和钢筋混凝土框架结构的动力非线性,将线性结构非平稳反应分析的时域模态综合技术与非线性结构平稳反应分析的等价线性化法相结合,构造了一种计算结构非平稳反应的离散时域等价线性化法.通过对剪切型钢筋混凝土框架结构的实例计算,探讨了地震动的非平稳性和结构反应的非平稳性对最终结果的影响,给出了有关的结论.
In this paper, the nonstationary feature of earthquake motion and the dynamic nonlinearity of R/C frame structures are taken into account.The time domain modal analysis technique for determining the nonstationary responses of linear systems is combined with the equivalent linearization procedure for evaluating stationary responses of nonlinear structures. A new equivalent linearization method is presented to calculate the nonstationary responses of R/C frame structures.Through the example computations, the effects of nonstationary characteristics of seismic motion and structural response on the final results are investigated,and relevant conclusions are given.
出处
《振动工程学报》
EI
CSCD
1991年第1期65-71,共7页
Journal of Vibration Engineering
关键词
框架
钢筋混凝土
地震
随机振动
non-stationary random vibration
nonlinear
equivalent linearization
R/C frame structure
