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考虑埋置效应对地震输入的修正方法

, PP. 107-111

Keywords: 核电工程,泵房,半埋置,地震输入,修正方法

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Abstract:

结合某核电站泵房半埋置式结构特点,分别分析使用经验公式法和数值分析法计算地震输入的局限性,指出直接采用基岩地表的地震动输入计算半埋置结构往往过大.为此提出一种考虑半埋置效应的地震输入的修正方法.该方法需要已知人工边界处土体节点地震位移和速度,然后通过对地震加速度时程进行积分,得到底层深度处土体速度和位移时程曲线.

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