地震动强度指标是建筑结构抗震设计的重要依据。

Ground motion intensity measure (im) is an important basis for structural seismic design.

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作为地震动强度指标，峰值加速度一直是研究最多的物理量。

As the intensity index of ground motion, PGA (peak ground acceleration) is often employed and analyzed.

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采用非传统概率方法—凸集方法来考虑地震动强度的不确定性。

In this paper we consider the uncertainty of seismic strength using convex set approach other then the traditional probabilistic method.

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