한국전산구조공학회:학술대회논문집 (Proceedings of the Computational Structural Engineering Institute Conference)
- 한국전산구조공학회 1990년도 봄 학술발표회 논문집
- /
- Pages.37-43
- /
- 1990
동특성 추정 기법과 신뢰성 해법에 의한 기설교량의 내하력 판정 방법
A RELIABILITY-BASED CAPACITY RATING OF EXISTING BRIDGES BY INCORPORATING SYSTEM IDENTIFICATION
- Cho, Hyo-Nam (Professor, Department of Civil Engineering, Hanyang University) ;
- Yun, Chung-Bang (Professor, Department of Civil Engineering, Korea Advanced Institute of Science and Tecknology)
- 발행 : 1990.04.01
초록
This paper develops practical models and methods for the assessment of safety and rating of damaged and/or deteriorated bridges by incorporating a system identification technique for the explicit inclusion of the degree of deterioration or damage and of the actual bridge response. And, based on the proposed model, reliability-based rating methods are proposed as LRFR(Load and Resistance Factor Rating) and system reliability-index rating criteria. The proposed limit state model explicitly accounts for the degree of deterioration or damage in terms of the damage and response factors. The damage factor in the paper is proposed as the ratio of the current stiffness to the intact stiffness. Based on the observation and the results of applications to existing bridges, it may be concluded that the proposed rating models, which explicitly account for the uncertainties and the effects of degree of deterioration or damage based on the system identification technique, provide more realistic and consistent safety-assessment and capacity-rating.
키워드