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(shí)測應(yīng)力為基準(zhǔn)，建立其橫梁、下弦桿的疲勞應(yīng)力譜，并運(yùn)用既有鋼橋疲勞壽命的數(shù)學(xué)模型確定其剩余疲勞壽命。