By fatigue test of some members of a steel truss bridge and a theoretical analysis of the residual fatigue life of the bridge, an evaluation of fatigue safety status of the steel truss bridge which is in accord with the fact is made.

• 通过对某钢桁梁桥构件的疲劳试验和对该桥的剩余疲劳寿命的理论分析，作出符合实际的疲劳安全状态评估。