내진설계를 위한 인공지진파 강진지속시간 기준의 평가

Assessment of the Strong Motion Duration Criterion of Synthetic Accelerograms

  • 허정원 (전남대학교 해양기술학부 해양공학과) ;
  • 정호섭 (전남대학교 해양기술학부 해양공학과) ;
  • 김재민 (전남대학교 건설환경공학부) ;
  • 정연석 (한국원자력안전기술원 원자력안전연구실)
  • 발행 : 2006.03.17

초록

This paper addresses a fundamental research subject to complement and improve current domestic design specifications for the strong motion duration criterion and the envelop function of artificial accelerograms that can be applied to the earthquake-proof design of nuclear structures. The criteria for design response spectra and strong motion duration suggested by WRC RG 1.60 and ASCE Standard 4-98 are commonly being used in the profession, and they are first compared with each other and reviewed. By applying 152 real strong earthquake records that are over magnitude of 5 in the rock sites to the strong motion duration criterion in ASCE 4-98, an empirical regression model that predicts the strong motion duration as a function of earthquake magnitude is then developed. Using synthetically generated earthquake time histories for the five cases whose strong motion durations vary from 6 to 15 seconds, a seismic analysis is conducted to identify effects of the strong motion durations on the seismic responses of nuclear structures.

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