The Strongest Pulse Identification Algorithm Based on the Maximum PGV of Three Orthogonal Components

The strongest velocity pulse orientation is a critical factor when considering the near-fault ground motions and their adverse seismic response. The strongest velocity pulse identification methods usually focus on a single orientation and two orthogonal components in the horizontal plane. In this paper, a new identification method of the strongest velocity pulse is proposed that considers three orthogonal components of ground motion, by rotating the ground motion to the orientation that corresponds to the maximum peak ground velocity (PGV) in three orthogonal components. The identification results by this method are compared with the identification results by the wavelet analysis method. The results demonstrate the feasibility and accuracy of the strongest velocity pulse identification method considering the three orthogonal components of ground motion.