Generation of artificial earthquake time histories for the seismic analysis of base-isolated bridges

지진격리교량의 지진해석을 위한 인공지진파의 작성

  • 김남식 (부산대학교 토목공학과) ;
  • 김재민 (여수대학교 건설환경공학부) ;
  • 이계희 (목포해양대학교 해양시스템공학부) ;
  • 강형택 (한국도로공사 도로교통연구원)
  • Published : 2005.03.18

Abstract

In this study, a set of artificial earthquake time histories, which can be used for the earthquake-resistant design of seismically isolated highway bridges, was presented. In addition, adequateness of the generated ground accelerations was investigated. These were performed based on the seismic design standard for seismically isolated bridges. Total of 22 acceleration time histories were generated for each soil condition by the spectral method. The time histories were verified to meet the code provisions including (1) mean response spectrum at control frequencies, (2) EPGA (effective peak ground acceleration), and (3) correlation coefficient. Finally, the maximum response corresponding to four time histories and the mean response associated with seven time histories were computed using the generated acceleration time histories, which shows validity of the proposed artificial earthquake time histories.

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