From the analysis of the paper, the acceptable strengthening measures and funds allocation could be obtained for ecery bridges based on the whole benefits of road net through the the strategy.

• 各个层次的模型设计和算例分析表明,采用本文提出的方法,可以获得可接受的资金分配和各桥梁构件的加固方案,在不损失路网系统功能的前提下使有限的资金投入获得最大的效益。