Development of Site Classification System and Modification of Design Response Spectra considering Geotechnical Site Characteristics in Korea (III) - Modification of Desing Response Specra

국내 지반특성에 적합한 지반분류 방법 및 설계응답스펙트럼 개선에 대한 연구 (III) - 설계응답스펙트럼 개선방법

  • 윤종구 (한국유지관리(주) 지반설계사업부) ;
  • 김동수 (한국과학기술원 건설및환경공학과) ;
  • 방은석 (한국과학기술원 건설및환경공학과)
  • Published : 2006.04.30


In the companion paper (II, Development of Site Classification System), new size classification system based on site periods $(T_G)$ was recommended for legions of shallow bedrock depth in Korea. Despite the site classification method was improved, the response spectrum would be required to be modified by adjusting the integration interval to calculate the site coefficients because the response spectra did not match well the average spectral accelerations obtained by site response analyses in the range of long periods. In this paper, new response spectra for each site categories were determined by adjusting the integration interval of long period site coefficient $F_v\;from\;0.4{\sim}2.0\;to\;0.4{\sim}1.5$ second. It matched well the average spectral accelerations and new response spectrum, and it was also improved compared to the current she classification system.


site coefficients;modification of site coefficients;interval of integration;response spectra;site period;site classification


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  5. 윤종구, 김동수, '국내 지반특성에 적합한 설계지반운동 결정 방법에 대한 연구', 한국지진공학회논문집, 제8권 제3호, 2004, pp. 23-32
  6. 윤종구, 김동수, 방은석 '국내 지반 특성에 적합한 지반 분류 방법 및 설계응답스펙트럼 개선에 대한 연구 (I) - 국내 내진설계기준의 문제점 분석', 한국지진공학회 논문집, 제10권 2호(통권 제48호), 2006, pp. 39-50

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