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2-매개변수 지반분류 방법 및 지반 증폭계수의 검증 (2)-국내 실지진 기록을 통한 검증
이세현(Lee, Sei-Hyun),박동희(Par, Dong-Hee),하정곤(Ha, Jeong-Gon),김동수(Kim, Dong-Soo) 한국지반공학회 2012 한국지반공학회논문집 Vol.28 No.3
Following the companion paper (I. Comparisons with Well-known Seismic Code and Site Response Characteristics), several acceleration data recorded during recent earthquake events in Korea were analyzed to verify the suitability of the proposed two-parameters site classification system and the corresponding site coefficients. For all of rock-soil site pairs less than 30 km distant, response spectrums and corresponding site coefficients, F<sub>a</sub> and F<sub>v</sub>, were determined. Unfortunately, some of data have an eccentric error, where the spectral acceleration of rock site is more amplified than that of soil site. The F<sub>a</sub> and F<sub>v</sub> for all of pairs except the pairs of error were compared with those in the current code and the proposed system. The Fa and Fv from the recorded motions show definitely different trend from that of the current code. In addition, the site coefficients from recorded motions at four 765 kV substation sites, which are several hundred meters distant, have a remarkably similar trend and absolute values to those in proposed two-parameters site classification system, Based on earthquake motions recorded in domestic areas including data from the four 765 kV substation sites, the two-parameters site classification and site coefficients are superior to the results obtained from the current Korean seismic code.
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