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A Compact Probabilistic Representation of the Chi-Chi Earthquake Ground Movement

This paper uses a previously developed procedure to condense nonstationary random excitation data to perform analytical random vibration response studies to investigate the 1999 Chi-Chi (Taiwan) earthquake recorded ground motions. An ensemble of free-field ground motion records from the main earthquake event collected from locations near the Chelungpu fault were used in order to create the second, order statistics of the earthquake excitation. Using the compaction procedure, the covariance matrix of the excitation process was spectrally decomposed by the Karhunin-Loeve expansion. The dominant eigenvectors, that is, those with the larges eigenvalues, represent the dominant energy time histories in the random process and can be used to characterize the dominant features of the earthquake process. Second-order descriptions of the transient dynamic response of discrete systems to the compact form of the earthquake process are obtained. This type of result can used in order to facilitate improved design standards for civil structure and to perform reliability studies. A comparison is made of the preliminary results of this study and those obtained from a similar analysis performed on an ensemble of ground motions from the 1994 Northridge earthquake.

  • Availability:
  • Corporate Authors:

    Marcel Dekker, Incorporated

    270 Madison Avenue
    New York, NY  United States  10016
  • Authors:
    • Smyth, Andrew W
    • Masri, S F
    • Loh, C H
  • Publication Date: 2003

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 481-490
  • Monograph Title: Reinforced Soil Engineering. Advances in Research and Practice

Subject/Index Terms

Filing Info

  • Accession Number: 01041747
  • Record Type: Publication
  • ISBN: 0824742540
  • Files: TRIS
  • Created Date: Jan 30 2007 1:32PM