【摘要】 将随机振动的虚拟激励法与拱坝-地基动力相互作用FE-BE-IBE时域模型结合,发展了一个可以考虑地震动部分相干效应的拱坝随机动力响应计算模型,并用Monte-Carlo方法对模型进行了验证。不同模型的计算结果表明,地震动的部分相干效应对拱坝的动力响应有显著影响。更多还原

【Abstract】 A random vibration analysis model of arch dam – foundation interaction, which couples the pseudo-excitation algorithm and FE-BE-IBE time domain procedure, is presented. It can conveniently include the effects of arbitrary coherency on the seismic responses of arch dams. To verify the accuracy of the proposed model, Monte Carlo method is employed to calculate the seismic responses of an arch dam. The results demonstrate that the arbitrary coherency effects have significant influences on the seismic responses of arch dams.更多还原