Nonlinear site amplification model for ergodic seismic hazard analysis in Central and Eastern North America

Youssef M.A. Hashash, Okan Ilhan, Joseph A. Harmon, Grace A. Parker, Jonathan P. Stewart, Ellen M. Rathje, Kenneth W. Campbell, Walter J. Silva

Research output: Contribution to journalArticlepeer-review

Abstract

This article presents recommendations for nonlinear site amplification models in Central and Eastern North America (CENA), which are developed from one-dimensional site response analyses results and accompanies linear site amplification model in a companion article. Two median nonlinear amplification models using identical functional forms are produced as a function of VS30 and peak ground acceleration for reference conditions (PGAr) of VS = 3000 m/s and VS30 = 760 m/s. An epistemic uncertainty model on median nonlinear amplification is proposed as a piecewise functional form to generate reasonable variations of nonlinear amplification across the period and VS30 ranges of interest. Limitations of the models are based on both the methodology of the model derivation and assumptions of nonlinear amplification model forms.

Original languageEnglish (US)
Pages (from-to)69-86
Number of pages18
JournalEarthquake Spectra
Volume36
Issue number1
DOIs
StatePublished - Feb 1 2020

Keywords

  • Site amplification
  • ergodic seismic hazard analysis

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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