Evaluation of two approaches to simulate spatially variable ground motions

Chi Chin Tsai, Youssef M.A. Hashash

Research output: Contribution to journalArticlepeer-review


Spatial variability of ground motions has significant influence on dynamic response of extended structures such as bridges and tunnels. This study systematically evaluates two commonly used procedures for developing spatially variable ground motion time series considering incoherency effect, wave passage effect, and effect of intermediate stations. The evaluation included the methods' ability to: handle general forms of incoherency function, correctly account for wave passage, conserve energy, and be minimally influenced by the presence of intermediate stations. The method that can mostly satisfy these requirements is identified in this article.

Original languageEnglish (US)
Pages (from-to)293-308
Number of pages16
JournalJournal of Earthquake Engineering
Issue number2
StatePublished - Feb 2010


  • Ground motion time-history
  • Incoherency
  • Spatially variable motion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


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