Abstract This present paper proposes a spectral-acceleration-based earthquake intensity measure, which considers the higher modes effect and period elongation effect. A comprehensive study has been carried out to investigate the correlation between structural damages of high-rise chimneys and the proposed intensity measure as well as a number of widely used ground motion parameters under far-field ground motion records. Three RC high-rise chimneys, i.e., a 240 m-high chimney, a 180 m-high chimney, a 120 m-high chimney, are established and analyzed in OpenSees. The structural performance is expressed in terms of Park-Ang damage index, maximum inter-story drift ratio, maximum roof displacement, and maximum floor acceleration. The results indicate that the majority of displacement-related ground motion parameters behave too poor to yield a good correlation with the structural damage index of high-rise chimneys. Moreover, the proposed intensity measure has a high correlation with the structural damage indices, especially with maximum inter-story drift ratio and maximum roof displacement. As a result, the proposed earthquake IM is a promising parameter to predict the structural damage of high-rise chimneys.

中文翻译：

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高层钢筋混凝土烟囱地震烈度参数与损伤指数的相关性

摘要 本文提出了一种基于谱加速度的地震烈度测度，它考虑了高模效应和周期伸长效应。已经进行了一项综合研究，以研究高层烟囱的结构损坏与建议的强度测量以及远场地震动记录下许多广泛使用的地震动参数之间的相关性。在OpenSees中建立并分析了三个RC高层烟囱，即一个240米高的烟囱、一个180米高的烟囱、一个120米高的烟囱。结构性能以 Park-Ang 损伤指数、最大层间漂移比、最大屋顶位移和最大地板加速度表示。结果表明，大多数与位移相关的地震动参数表现太差，无法与高层烟囱的结构损坏指数产生良好的相关性。此外，建议的强度测量与结构损坏指数具有高度相关性，特别是与最大层间漂移比和最大屋顶位移。因此，所提出的地震 IM 是预测高层烟囱结构损坏的一个很有前途的参数。