In this paper, time and frequency domain characteristics of Gyeong-ju earthquakes were investigated, and nonlinear time history analyses were conducted for bi-linear hysteretic structures excited by short-duration ground accelerations. Previous studies showed that larger inelastic displacements than the peak displacement of the corresponding elastic system were observed especially for the structures with structural period shorter than 0.3s, and the similar results could be obtained when long-duration ground accelerations were used as excitation loads. For the short-duration earthquakes, however, the inelastic displacements were not so large and almost identical to the peak elastic displacements.

1. 서 론
 2. 경주지진파 특성 분석
 3. 경주지진과 유사한 특성을 가지는 지진파 선정
 4. 극단주기구조물 변위연성도 평가
 5. 결 론
 / REFERENCES /

• 노지은(단국대학교 건축공학과) | Roh Ji Eun
• 이상현(단국대학교 건축공학과) | Lee Sang Hyun Corresponding author
• 서준원(단국대학교 건축공학과) | Seo Jun Won
• 김동관(센구조 연구소 연구개발부) | Kim Dong Kwan