规范中关于设计地震动的规定。
指出多途径设计地震动对于抗震结构具有重要意义。
It is pointed out that the multiple way design ground motion is of great importance to the seismic structures.
应用这些统计特征，可模拟出符合统计要求的基于非平稳时间历程的设计地震动。
Utilizing these statistical features, we can simulate the design ground motion founded on the theories of non-stationary time history.
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