从在役公路钢桥剩余疲劳寿命研究的必要性出发,对公路钢桥的剩余疲劳寿命的现状进行阐述,结合钢桥疲劳强度的计算方法,总结了目前对于在役公路钢桥剩余疲劳寿命的评估方法,结合相关研究者的研究内容提出了钢桥剩余疲劳寿命系统的建立一般流程,并且详细介绍评估钢桥剩余疲劳寿命时建立模型相关细节,旨在给与在役公路钢桥的剩余疲劳寿命相关的研究者以及相关施工、设计、养护人员提供参考。 Based on the necessity of researching the residual fatigue life of the steel bridge on service highway, the current status of the remaining fatigue life of the steel bridge is described. Combined with the calculation method of the fatigue strength of the steel bridge, the current fatigue life of the steel bridge in service Evaluation method, combined with relevant researchers’ research content, the paper presents the general flow of the steel bridge residual fatigue life system, and details the details of building the model when evaluating the residual fatigue life of the steel bridge in order to give the remaining fatigue of steel bridge in service Life-related researchers and related construction, design, maintenance personnel to provide reference.