A method for the estimation of the ductility demand on reinforced concrete piers during ground seismic shaking is proposed. The required input is the measurement data from a structural health monitoring system within the time window of the seismic event. The procedure relies on detection of high-frequency transients related to damage and their distance forward in time to the closest deformation extrema. A formulation is proposed which relates these measurements to the ductility demand on the pier. A step-by-step description of the procedure is provided along with a case study implementation on an experimental reinforced concrete column. The ductility demand is estimated and compared with the one obtained from the experimental force–deformation curve.

中文翻译：

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从结构健康监测数据估算钢筋混凝土桥墩延性需求

提出了一种估计地震作用下钢筋混凝土墩的延性需求的方法。所需的输入是地震事件时间窗内来自结构健康监测系统的测量数据。该程序依赖于检测与损坏有关的高频瞬态，以及它们在时间上最接近变形极值的距离。提出了一种将这些测量结果与桥墩的延性要求相关联的公式。提供了该过程的分步说明，以及在钢筋混凝土实验柱上的案例研究实施。估算延性需求，并将其与从实验力-变形曲线获得的延性需求进行比较。