This study evaluates collapse probabilities of structures which are designed according to a domestic seismic design code, KBC2009. In evaluating their collapse probabilities, to do this, probabilistic distribution models for seismic hazard and structural capacity are required. In this paper, eight major cities in Korea are selected and the demand probabilistic distribution of each city is obtained from the uniform seismic hazard. The probabilistic distribution for the structural capacity is assumed to follow a underlying design philosophy implicitly defined in ASCE 7-10. With the assumptions, the structural collapse probability in 50 years is evaluated based on the concept of a risk integral. This paper then defines an mean value of the collapse probabilities in 50 years of the selected major cities as the target risk. Risk-targeted spectral accelerations are finally suggested by modifying a current mapped spectral acceleration to meet the target risk.

1. 서 론
 2. 위험도기반 최대예상지진
  2.1 위험도 적분(Risk integral)의 개념
  2.2 ASCE/SEI 7에서의 위험도기반 최대예상지진
 3. 국내 내진설계기준에 따른 구조물의 50년간 붕괴확률 평가
  3.1 국내 주요도시에 대한 지진위험도
  3.2 구조물 붕괴성능의 불확실성
  3.3 위험도 적분을 이용한 50년간 붕괴확률 평가
 4. 위험도기반 최대예상지진의 스펙트럴 가속도
 5. 결 론
 / 감사의 글 /
 / REFERENCES /

• 신동현(서울시립대학교 건축공학과) | Shin, Dong Hyeon Corresponding author
• 김형준(서울시립대학교 건축공학과) | Kim, Hyung-Joon