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发布日期:2020-04-13
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设计地震分组是新规范新提出的概念,用以代替旧规范设计近震、设计远震的概念。根据《抗规》第3.2.3条条文及第3.2.2条条文说明,设计地震分组实际上是用来表征地震震级及震中距影响的一个参量,实际上就是用来代替原来老规范“设计近震和远震”,它是一个与场地特征周期与峰值加速度有关的参量。
自振周期T为结构系统按某一振型完成一次自由振动所需要的往复时间。
二组是贵州省安顺市镇宁布依族苗族自治县江龙镇陇西村下辖组。
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