Reliability Analysis of Suspension Bridges against Buffeting Failure
محل انتشار: ششمین کنفرانس بین المللی مهندسی عمران
سال انتشار: 1382
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,573
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شناسه ملی سند علمی:
ICCE06_388_8717403378
تاریخ نمایه سازی: 25 مهر 1384
چکیده 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.
کلیدواژه ها:
نویسندگان
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- ۱۱۰ ۰۱۶, India