우리나라 건축물 설계 스펙트럼에 상응하는 지진규모와 진앙거리의 추정

Abstract

In this study, to estimate the combination of earthquake magnitude (Mw) and distance (R) corresponding to the design spectrum defined in Korean Building Code (KBC) 2016, the response spectra predicted from the attenuation relationships with the variation of Mw (5.0~7.0) and R (10~30km) are compared with the design spectrum in KBC 2016. Four attenuation relationships, which were developed based on local site characteristics and seismological parameters in Southern Korea and Eastern North America (ENA), are used. As a result, the scenario ground motions represented by the combinations of Mw and R corresponding to the design spectrum for Seoul defined in KBC 2016 are estimated as (1) when R =10 km, Mw = 6.2~6.7; (2) when R = 15 km, Mw = 6.5~6.9; and (3) when R = 20 km, Mw = 6.7~7.1.