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本文在回顾了地震动模拟理论及反应谱拟合技术的发展后,提出了一个新的加速度时程曲线的拟合方法,以改进现有反应谱拟合精度和原则。此法不同于常规方法之处有二:(一)在对幅值谱修正时,考虑了傅氏谱各分量对最大反应贡献的正负;(二)对于仅用幅值谱修正不能满足要求的顽固点,提出了相位修正的方法。这一力法使拟合技术更为合理而有效。
In this paper, after reviewing the development of ground motion simulation theory and response spectrum fitting techniques, a new method of fitting acceleration time history curves is proposed to improve the accuracy and principles of existing response spectrum fitting. There are two ways this method differs from the conventional method: (a) When correcting the amplitude spectrum, the positive and negative contributions of the Fourier components to the maximum response are taken into account; (2) The correction cannot be satisfied for the amplitude spectrum only. The stubborn point, proposed a phase correction method. This method of force makes the fitting technique more reasonable and effective.