계측데이터를 이용한 사장교의 확률적 안전도 분석
Probabilistic Safety Analysis of Cable-Stayed Bridge Using Measured Data
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In this paper, through the study and consideration of the recently prominent monitoring of cable stayed-bridge, practical but reasonable suggested for the evaluation of the probabilistic safety of the bridges using probable measured data from monitoring measurement system. It is shown in the paper that the live load effects can be evaluated using measured data of cable-stayed bridge and this the realistic probabilistic safety of the cable-stayed bridge could be assessed in term of element reliability and system reliability.As a practical method for the evalution of the system reliability of system cable-stayed bridges partial ETA method is uesd, which can find the critical failure path including combined failure modes of cable, deck and pylon. Compared with the conventional safety analysis method, the propsed approach may be considered as the practical method that shows the considerably actual and reasonable results the system redundancy of the structure.
Abstract
In this paper, through the study and consideration of the recently prominent monitoring of cable stayed-bridge, practical but reasonable suggested for the evaluation of the probabilistic safety of the bridges using probable measured data from monitoring measurement system. It is shown in the paper that the live load effects can be evaluated using measured data of cable-stayed bridge and this the realistic probabilistic safety of the cable-stayed bridge could be assessed in term of element reliability and system reliability.As a practical method for the evalution of the system reliability of system cable-stayed bridges partial ETA method is uesd, which can find the critical failure path including combined failure modes of cable, deck and pylon. Compared with the conventional safety analysis method, the propsed approach may be considered as the practical method that shows the considerably actual and reasonable results the system redundancy of the structure.
참고문헌 (10)
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- 조효남, "체계신뢰성방법에 기초한 강사장교의 안전도평가", 전산구조공학회 논문집, 11(4), pp.351~360 (1998)
- AASHTO(American Association of State Highway and Transportation Officials), "Bridge Design Specifications" (2004), AASHTO(American Association of State Highway and Transportation Officials)
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- Ang, A.H-S., "Probability concepts in engineers in engineering planning and design. Vol. Ⅰ,Ⅱ." (1984), John Wiley & Sons Inc.
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- Calibration of Load Factors for LRFR Bridge Evaluation, NCHRP report 454, , TRB, National Research Council, ~ (2001)
- Nowak, A.S., "Reliability of structures" (2000), McGraw Hill
- Rackwitz, R., "Structural reliability under combined random load sequences", Journal of Computers & Structures, 9, pp.489~494 (1978)