Abstract

Directivity‐induced pulse‐like records have the potential to induce severe structural damage in near‐fault regions. A simple method to detect directivity‐induced pulses is presented in this study by comparing the pulse start time with an energy‐based time threshold, which was obtained by use of the generalized Pareto distribution. Using a dataset of directivity‐induced pulse‐like records that were selected based on the fault model and three source‐to‐site geometry parameters, a criterion is developed through regression analysis to select pulses potentially caused by directivity effects. Additionally, the effectiveness of the proposed approach is demonstrated through comparison with an existing method. The present work can be used in engineering practice, such as developing ground‐motion prediction models and probabilistic seismic hazard analysis in near‐fault regions.

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