## 6 Conclusions  
A time-dependent reliability assessment method for simply supported T-beam bridges was proposed considering the influence of reinforcement corrosion on vehicle load effect. Compared with existing reinforcement corrosion model studies, the inspection result of concrete strength was innovatively introduced to the corrosion model by the relationship between reinforcement corrosion and water/cement ratio. The modified eccentric compression method was improved by effective stiffness. The interaction between reinforcement corrosion and vehicle load effect, it was combined with an iterative algorithm to calculate the LLD coefficient for corroded reinforcement bridges. The time-dependent reliability of corroded reinforcement bridges was computed and discussed by the Monte Carlo method. The following conclusions can be drawn. 1. Reinforcement corrosion due to chloride ingress not only reduces the bearing capacity of simply supported T-beam bridges but also results in the deterioration of stiffness. As a result, the vehicle load effect will be changed, which will conversely aggravate the reinforcement corrosion process. The traditional LLD theory is no longer suitable for actual bridge engineering. 2. Reinforcement corrosion can lead to the redistribution of vehicle load effect. In both the theoretical and experimental analysis, the load effect of Beam 1 decreases gradually with the increase in reinforcement corrosion, and part of the load effect is redistributed to the internal beam. Due to the coincidence of the computational and experimental results, the correctness of the LLD calculation method for corroded reinforcement bridges is verified. 3. The LLD coefficient also possesses time-dependent properties. Because the reinforcement of the bridge is not corroded at the initial stage of service, there is little fluctuation with increasing time. After that, the LLD coefficients of T-beams will observably increase or decrease according to the position on the bridge and the reinforcement corrosion degree. 4. The traditional reliability analysis method for corroded reinforcement bridges only focuses on the bridge bearing capacity change. The interaction between the effective bending moment of inertia and the LLD coefficient caused by reinforcement corrosion is ignored. It increases the reliability calculation model error. The comparison results demonstrate the reliability index calculated by the traditional method is greater than that of the method proposed in this paper. This indicates the traditional method is too conservative and does not consider the influence of reinforcement corrosion on the LLD of simply supported T-beam bridges. 5. In this paper, the influence of reinforcement corrosion on the superstructure of simply supported bridges was researched based on bridge inspection data. For future study, the reinforcement corrosion influence on vehicle effects for other types of bridges will be extended. Moreover, modal parameters are used as important indicators for structural health monitoring, and they are also influenced by reinforcement corrosion. If the relationship between modal parameters and reinforcement corrosion is explicit, structural health monitoring data can be employed to accurately evaluate the reinforcement corrosion degree and the reliability of corroded bridges. Conceptualization, X.H. and G.T. ; Formal analysis, G.T. and W.W.; Funding acquisition, G.T. and W.W.; Investigation, X.H. and Q.K. ; Methodology, G.T. ; Resources, W.C. and W.W.; Software, W.C. and Q.K. ; Validation, X.H., W.C. and Q.K. ; Writing--original draft, X.H. and Q.K. ; Writing--review and editing, G.T., W.C. and W.W. All authors have read and agreed to the published version of the manuscript.