A Novel Approach for Classifying Acceleration-Pulses and Non-Acceleration-Pulses without Any Filtering Techniques

Near-fault pulse-like ground motions may increase the risk of earthquake-induced collapse, as structures subjected to strong velocity-pulses must dissipate large amounts of seismic energy in a short duration. These velocity-pulses can arise from either low-frequency acceleration pulses (acc-pulses) or high‐frequency, one‐sided acceleration spikes (non-acc-pulses). This study introduces a novel approach for automatically classifying acc-pulses and non-acc-pulses, which can accurately identify pulse-starting and -ending time without any filtering techniques. Comparative analysis demonstrates that the proposed algorithm outperforms existing methods in both accuracy and computational efficiency, eliminating pulse period calculation errors caused by inconsistent filter parameters in previous studies.