Dominant pulse simulation of near fault ground motions

  • S. R. Hoseini Vaez
  • M. K. Sharbatdar
  • G. Ghodrati Amiri
  • H. Naderpour
  • A. Kheyroddin
Technical Paper

Abstract

In this study, a new mathematical model is developed composed of two parts, including harmonic and polynomial expressions for simulating the dominant velocity pulse of near fault ground motions. Based on a proposed velocity function, the corresponding expressions for the ground acceleration and displacement time histories are also derived. The proposed model is then fitted using some selected pulse-like near fault ground motions in the Next Generation Attenuation (NGA) project library. The new model is not only simple in form but also simulates the long-period portion of actual velocity near fault records with a high level of precision. It is shown that the proposed model-based elastic response spectra are compatible with the near fault records in the neighborhood of the prevailing frequency of the pulse. The results indicate that the proposed model adequately simulates the components of the time histories. Finally, the energy of the proposed pulse was compared with the energy of the actual record to confirm the compatibility.

Keywords

dominant pulse near fault ground motions forward directivity response spectra simulation 

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • S. R. Hoseini Vaez
    • 1
  • M. K. Sharbatdar
    • 2
  • G. Ghodrati Amiri
    • 3
  • H. Naderpour
    • 2
  • A. Kheyroddin
    • 2
  1. 1.Department of Civil Engineering, Faculty of EngineeringUniversity of QomQomIran
  2. 2.Faculty of Civil EngineeringSemnan UniversitySemnanIran
  3. 3.Center of Excellence for Fundamental Studies in Structural Engineering, School of Civil EngineeringIran University of Science and TechnologyTehranIran

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