Reliability Assessment of the Urumia Lake Bridge Considering the Failure due to the Fatigue damage

Steel bridges structures are subjected to repeated cyclic stresses due to traffic load. The damage accumulation of these cyclic stresses can initiate cracks in a members leading to fatigue failure. The randomness of the nature of vehicle-induced fatigue load in combination of fatigue strength may cause toincrease uncertainty in the prediction of the bridge fatigue life. In this research, the fatigue detail coefficient A, and the equivalent stress range ,

Keywords:

Steel bridge , probability density function , fatigue , reliability