水平地震动强度包线函数的空间变化

Study on spatial variation of intensity envelope function for horizontal ground motion

以SMART-1台阵地震记录为基础,利用二次平滑法计算了水平强度包线;按T0.70=T0.80-T0.10定义强震持时,拟合了Am in和Ang的强度包线模型参数值;分析了强度包线模型中各参数随二维空间及土层厚度的变化规律,建立了相应的随机模型,为多点地震动时程的合成提供了理论基础。

Based on the earthquake records of SMART 1 array, the duration of ground motion is defined by comparing the percentage of energy holdings in duration, the values of the envelope function for the horizontal ground motion and each parameter in the envelope function are calculated. The spatial variation of each parameter of the envelope function for the horizontal ground mo- tion are analyzed, and then the experiential prediction formulas are suggested as well.