引言传统的地震危险性估计是以地面运动某些峰值幅度来表示的,它不包含预示结构在地震激励下动力反应的最重要的因素—频率特性。为了弥补这个不足,常常用一个标准反应谱的形状与某一地震重现期内特定场地上所期望的峰值幅度相对应。值得指出的是,这样的方法漠视了除 INTRODUCTION Traditional earthquake risk estimates are based on some peak amplitudes of ground motion and do not include frequency characteristics that predict the most important dynamic response of the structure under earthquake excitation. In order to compensate for this deficiency, the shape of a standard response spectrum is often used to correspond to the expected peak amplitude at a particular field during a given earthquake. It is worth pointing out that such methods ignore the addition