【摘要】 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.更多还原

【Abstract】 Considering the actual structural design of a nuclear power’s plant pump house,the semi-embeded characteristics and their limitations resulting from empirical formula method and numerical analysis method are respectively studied.The paper points out that the seismic inputs of bedrock surface which directly adopted to calculate the half buried structure are often too large.Therefore,a correction method of earthquake input for the semi-embeded structures is presented.The seismic’s displacement and velocity of the artificial border soil node need to be known for this method.The velocity and displacement time course curves of the depth underlying soil are obtained by integrating seismic acceleration time.更多还原