This paper establishes the fatigue stress spectrum of the transom and the bottom chord of a bridge over the Yellow River based on the measured stress and confirms the residual fatigue life by using mathematical model of existed steel bridge fatigue life.

以黃河某大橋的實測應力為基準，建立其橫梁、下弦桿的疲勞應力譜，并運用既有鋼橋疲勞壽命的數學模型確定其剩余疲勞壽命。