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June 1, 2003Bulletin of the Seismological Society of America

A Mathematical Representation of Near-Fault Ground Motions

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Authors

GMGeorge P. Mavroeidis

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Overview

Modeling study demonstrates accurate mathematical simulation of impulsive near-fault earthquake dynamics in civil structures, highlighting enhanced design frameworks for seismic hazards.

Key Points

  • Formulate a physically meaningful analytical model to represent the impulsive characteristics of near-fault strong ground motions and generate realistic synthetic records for engineering design.
  • Constructed a simplified mathematical model whose parameters reflect direct physical properties of near-source seismic ground motion.
  • Calibrated and validated the analytical formulations against an extensive database of recorded near-field earthquake time histories.
  • Synthesized artificial motion profiles across displacement, velocity, and acceleration domains to compute corresponding response spectra.
  • The analytical model successfully captures empirical near-fault velocity and displacement time histories across the entire validation dataset, as well as acceleration histories in most cases.
  • Computed deformation, velocity, and acceleration response spectra closely match empirical observations derived from real near-source records.
  • Model parameter scaling laws effectively link earthquake magnitude to structural demands across conventional, base-isolated, and specialized structural systems.

Cite This Study

George P. Mavroeidis (2003) studied this question.

synapsesocial.com/papers/69df6e1935659245ec614e73https://doi.org/10.1785/0120020100
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