Generation of seed-based spectrum-compatible pulse-like time-series

Abstract

A large set of recorded pulse-like motions containing a wide range of pulse periods are used as seed to generate records that match narrow-band modified target spectra for different magnitude scenarios. While most of the records generated exhibited response spectra that closely match the pulse-modified target spectra, the velocity pulse was not always preserved. In the cases where the compatible record contains a strong velocity pulse, there was a tendency in the period of the pulse to shift towards the period used to modify the target spectrum. Conveniently, all of the identified pulse periods in the compatible records were within the range [median\u2009±\u2009σ] established by the predictive equation. Recommendations on the selection of seed records and evaluation of the resulting compatible series are proposed based on a comprehensive study that encompasses the characteristics of the records and their effect in nonlinear structural demand.