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Reliability Analysis of Suspension Bridges against Buffeting Failure

عنوان مقاله: Reliability Analysis of Suspension Bridges against Buffeting Failure
شناسه (COI) مقاله: ICCE06_388_8717403378
منتشر شده در ششمین کنفرانس بین المللی مهندسی عمران در سال 1382
مشخصات نویسندگان مقاله:

S. Pourzeynali - Dept. of Civil Engineering, Engineering Faculty, The University of Guilan, Rasht, Iran
T. K. Datta, Professor - Civil Engineering Department, Indian Institute of Technology, Huaz Khas, New Delhi- 110 016, India

خلاصه مقاله:
As the span of suspension bridges become longer, the wind effects on them also become more important. In long-span suspension bridges,there are two typical windinduced aerodynamic phenomena: flutter and buffeting. In this paper, the reliability of the suspension bridges against buffeting failure is presented using the concept of PRA (probability risk analysis) procedure and the basic reliability analysis method. For this purpose, the bending stresses are calculated at critical nodes of the bridge deck along the bridge span. Many sources of uncertainties are considered. These uncertainties are incorporated by a set of random multiplying factors in the limit-state function. The results of the parametric study show that ductility of the system has a significant effect on the reliability against buffeting failure.

کلمات کلیدی:
Suspension bridges, reliability analysis, buffeting failure, ductility

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