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震后城市地震动场快速评估方法 ――以福州盆地为例

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Keywords: 地震动场,快速评估,场地效应

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Abstract:

震后灾情的快速获取是灾后应急的基础,传统的方法是根据现场调查结果决定应急方案。受灾程度的分布常以烈度分布图描述,而烈度又与加速度峰值密切相关。本文提出了一种震后地震动场分布快速评估的方法。该方法将主要依据灾区基岩台站的实时强震记录(无强震记录也行)和该地区的加速度衰减关系,再结合该地区各类场地的地震动放大因子,则可快速估计该地区地震动场分布,从而确定灾情,为政府的应急决策提供依据。

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