将一种全新的基于不确定条件下的理论引入到无砟轨道混凝土整体道床的检测和大修中.该理论以结构在剩余寿命周期内的费用最少为目标,利用费用函数的递推法来求整体道床的最优检测间隔和大修的临界值.最后根据Matlab建立计算模型,并结合具体算例分析恶化水平和最优检测间隔之间的关系,从算法上解决了整体道床检测和大修中的关键问题. A new theory based on uncertain conditions is introduced into the testing and overhaul of ballastless track monolithic ballast.Based on the recursive method of cost function, this theory takes the least cost of structure in the remaining life cycle as the goal The optimal detection interval of the whole track bed and the critical value of overhaul.At last, the calculation model is established based on Matlab, and the relationship between the deterioration level and the optimal detection interval is analyzed by combining with specific examples to solve the problem of the whole track bed detection and overhaul The key issue.