虚拟激励法在结构地震频域分析中的应用

The application of virtual excitation method in structural seismic frequency domain analysis

应用虚拟激励法计算了结构在地震激励下的动反应谱密度,将复杂的随机振动频域分析简单化,推导了结构在非正交阻尼情况下的频响函数,指出该方法计算量小,能够准确、高效地算出结构的动响应的谱密度函数。

This paper calculated the dynamic response spectrum density of structure under seismic excitation using virtual excitation method, made complex stochastic vibration frequency analysis simple, derived the frequency response function of structure in non orthogonal damping situation, pointed out that the calculation of this method was small, could accurately, efficiently calculate the dynamic response spectral density func- tion of structure.