Optimization analysis of concrete girder bridge maintenance based on genetic algorithm

The highway bridges built in the 1990s and before have increasingly serious diseases, which greatly impair the normal function of the traffic system. In this paper, bridge maintenance measures are dividing into two categories: preventive maintenance and corrective maintenance. Taking the minimum maintenance cost of bridge as the optimization goal, a mathematical model for optimal maintenance decision of highway concrete girder bridge is proposing. The optimal maintenance time and maintenance method of the concrete main girder and pier in the design service life of the case bridge are obtaining by using genetic algorithm of Matlab software.