Correlation between strong motion indices and damage of wooden structures based on nonparametric statistics

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To propose more useful strong motion indices and to improve estimation accuracy of building damage, some strong motion indices (peak ground velocity, spectrum intensity, Japan Meteorological Agency seismic intensity, spectral displacement, etc.) are investigated with respect to correlation with damage of wooden structures. A nonparametric correlation coefficient, Spearman's Ρ, is employed as an indicator of accuracy of damage estimation. Multiple input motions are used for nonlinear time history analysis of two-degree-of-freedom models of wooden structures, which have various combinations of story stiffnesses. As a damage model, maximum story drift angle is considered and three levels of threshold, 1/60, 1/30 and 1/15 rad are examined, which approximately correspond to minor, moderate, and major damage of a structure. Distributions of Spearman's Ρof the strong motion indices are compared, and it is revealed that displacement response of a linear single-degree-of-freedom system with a damping ratio of 20% and with the elongated period that is determined by a damage threshold, shows fairly good correlation with the structural damage.

Original languageEnglish
Title of host publication8th US National Conference on Earthquake Engineering 2006
Pages4629-4637
Number of pages9
Publication statusPublished - 2006 Dec 1
Event8th US National Conference on Earthquake Engineering 2006 - San Francisco, CA, United States
Duration: 2006 Apr 182006 Apr 22

Publication series

Name8th US National Conference on Earthquake Engineering 2006
Volume8

Other

Other8th US National Conference on Earthquake Engineering 2006
CountryUnited States
CitySan Francisco, CA
Period06/4/1806/4/22

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Kohiyama, M. (2006). Correlation between strong motion indices and damage of wooden structures based on nonparametric statistics. In 8th US National Conference on Earthquake Engineering 2006 (pp. 4629-4637). (8th US National Conference on Earthquake Engineering 2006; Vol. 8).