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- 拟合我国对《建筑结构抗震规范》进行了修订,将设计反应谱周期由原来的3秒延长到现在的6秒。反应谱周期的延长利用三角级数法迭加来模拟地震动-Fitting China s anti-seismic construction norms, and the amendment to the design response spectrum cycle from three seconds to extend to the present six seconds. Response spectrum