내진설계기준의 지반분류체계 및 설계응답스펙트럼 개 선을 위한 연구 - (I) 데이터베이스 및 지반응답해석
(주)코리아스칼라
- 최초 등록일
- 2023.04.05
- 최종 저작일
- 2016.06
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서지정보
ㆍ발행기관 : 한국지진공학회
ㆍ수록지정보 : Jorunal of the Earthquake Engineering Society of Korea / 20권 / 4호
ㆍ저자명 : 조형익, Manandhar Satish, 김동수
영어 초록
Korea is part of a region of low to moderate seismicity located inside the Eurasian plate with bedrock located at depths less than 30 m. However, the spectral acceleration obtained from site response analyses based on the geologic conditions of inland areas of the Korean peninsula are significantly different from the current Korean seismic code. Therefore, suitable site classification scheme and design response spectra based on local site conditions in the Korean peninsula are required to produce reliable estimates of earthquake ground motion. In this study, site-specific response analyses were performed at more than 300 sites with at least 100 sites at each site categories of SC, SD, and SE as defined in the current seismic code in Korea. The process of creating a huge database of input parameters - such as shear wave velocity profiles, normalized shear modulus reduction curves, damping curves, and input earthquake motions - for site response analyses were described. The response spectra and site coefficients obtained from site response analyses were compared with those proposed for the site categories in the current code. Problems with the current seismic design code were subsequently discussed, and the development and verifications of new site classification system and corresponding design response spectra are detailed in companion papers (II-development of new site categories and design response spectra and III-Verifications)
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