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Behavioral Performance Evaluation of the Moment-Resisting Frame Models Equipped with Seismic Damage Mitigation Systems

지진피해 저감 시스템을 설치한 모멘트 프레임의 거동성능 평가

  • Joe, Yang Hee (Dept. of Civil and Environmental Engineering, Incheon National University) ;
  • Son, Hong Min (Dept. of Civil and Environmental Engineering, Incheon National University) ;
  • Hu, Jong Wan (Dept. of Civil and Environmental Engineering, Incheon National University)
  • 조양희 (인천대학교 건설환경공학부) ;
  • 손홍민 (인천대학교 건설환경공학부) ;
  • 허종완 (인천대학교 건설환경공학부)
  • Received : 2017.06.08
  • Accepted : 2017.10.12
  • Published : 2017.11.01

Abstract

In this study, the seismic performance of concrete-steel composite moment frame structures equipped with seismic retrofitting systems such as seismic reinforcement, base isolators, and bracing members, which are typical earthquake damage mitigation systems, is evaluated through nonlinear dynamic analyses. A total of five frame models were designed and each frame model was developed for numerical analyses. A total of 80 ground acceleration data were used to perform the nonlinear dynamic analysis to measure ground shear force and roof displacement, and to evaluate the behavioral performance of each frame model by measuring inter-story drift ratios. The analysis results indicate that the retrofitting device of the base isolator make a significant contribution to generating relatively larger absolute displacement than other devices due to flexibility provided to interface between ground and column base. However, the occurrence of the inter-story drift ratio, which is a relative displacement that can detect the damage of the structure, is relatively small compared with other models. On the other hand, the seismic reinforced frame model enhanced with the steel plate at the lower part of the column was found to be the least efficient.

Keywords

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