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Pulse-like ground motions are capable of inflicting significant damage to structures.Efficient classification of pulse-like ground motion is of great importance when performing the seismic assessment in near-fault regions.In this study,a new method for identifying the velocity pulses is proposed,based on different trends of two parameters: the short-time energy and the short-time zero crossing rate of a ground motion record.A new pulse indicator,the relative energy zero ratio(REZR),is defined to qualitatively identify pulse-like features.The threshold for pulse-like ground motions is derived and compared with two other identification methods through statistical analysis.The proposed procedure not only shows good accuracy and efficiency when identifying pulse-like ground motions but also exhibits good performance for classifying records with high-frequency noise and discontinuous pulses.The REZR method does not require a waveform formula to express and fit the potential velocity pulses; it is a purely signal-based classification method.Finally,the proposed procedure is used to evaluate the contribution of pulse-like motions to the total input energy of a seismic record,which dramatically increases the seismic damage potential.