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Evaluation of Inelastic Displacement Ratios for Smooth Hysteretic Behavior Systems

완만한 이력거동 시스템에 대한 비탄성 변위비의 평가

  • 송종걸 (강원대학교 토목공학과)
  • Received : 2010.07.07
  • Accepted : 2011.01.18
  • Published : 2011.06.30

Abstract

The inelastic displacement ratio is defined as the ratio of the peak inelastic displacement to the peak linear elastic displacement. The inelastic displacement ratio allows simple evaluation of the peak inelastic displacement directly from the peak elastic displacement without computation of the inelastic response. Existing research of the inelastic displacement ratio is limited to piece-wise linear systems such as bilinear or stiffness degrading systems. In this paper, the inelastic displacement ratio is investigated for smooth hysteretic behavior systems subjected to near- and far-fault earthquakes. A simple formula of the inelastic displacement ratio is proposed by using a two step procedure of regression analysis.

Keywords

Inelastic displacement ratio;Smooth hysteretic behavior;Strength reduction factor;Displacement ductility;Inelastic response spectrum

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