The substantial difference lies in that guaranteed rate frequency method determines the rate artificially, but synthetic durationcurve method has its intrinsic frequency.
其根本差别只在于保证率频率法是人为地确定频率，而综合历时曲线法本身固有一个频率。
2
By solving recurrence equation of stochastic finite element, the durationcurve of mean value and standard deviation of seismic response can be obtained for every floor of frame shear structure.
通过求解随机有限元的递推方程，得到框剪结构各层的地震动力响应均值和标准差历时曲线。
3
This very simple example illustrates how modeling the duration with a distribution curve as opposed to a static specific value can cause a radically different simulation result.