In a previous paper, ambient vibration tests were conducted on a cable stayed bridge with resilient-friction base isolation systems (R-FBI) to extract the dynamic characteristics of the bridge and compare the results with a seismic analysis model. In this paper, a nonlinear seismic analysis model was established for analysis of the bridge to compare the difference in seismic responses between nonlinear time history analysis and multi-mode spectral analysis methods in the seismic design phase of cable supported bridges. Through these studies, it was confirmed that the seismic design procedures of the “Korean Highway Bridge Design Code (Limit State Design) for Cable Supported Bridges” is not suitable for cable supported bridges installed with R-FBI. Therefore, to reflect the actual dynamic characteristics of the R-FBI installed on cable-supported bridges, an improved seismic design procedure is proposed that applies the seismic analysis method differently depending on the seismic isolation effect of the R-FBI for each seismic performance level.

A B S T R A C T
1. 서 론
2. 마찰복원형 지진격리장치 구조 및 거동 특성
3. 케이블교량 비선형 해석 모델 구축 및 지진해석
    3.1 케이블교량 비선형 지진해석 모델 작성
    3.2 지진해석법에 따른 지진응답 비교
4. 케이블교량 내진설계 절차 개선
    4.1 마찰복원형 지진격리장치의 거동특성 반영
    4.2 성능기반설계에 기초한 케이블교량의 내진설계법 제안
5. 결 론
REFERENCES

• 길흥배(한국도로공사 초장대교량연구단) | Gil Heungbae (Super Long Span Bridge R&D Center, Korea Expressway Corporation)
• 박선규(성균관대학교 건설환경시스템공학과) | Park Sun Kyu (Department of Civil Engineering, Sungkyunkwan University)
• 한경봉(한국도로공사 초장대교량연구단) | Han Kyoung Bong (Super Long Span Bridge R&D Center, Korea Expressway Corporation)
• 윤완석(한국도로공사 스마트건설사업단) | Yoon Wan Seok (Center for Smart Construction Technology, Korea Expressway Corporation) Corresponding author