中文摘要：

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.

英文摘要：

A new theory based on uncertainty was introduced into the inspection and overhauling of monolithic track-bed. In order to minimize the expenses in remaining life, the theory is used to seek optimal interval for inspection and critical value for overhauling with reeursion method. Finally, a model was established by using MATLAB and an example was computed to study the relationship between deterioration level and optimal interval. So the key problems of inspection and overhauling of monolithic track-bed were solved on arithmetic aspect.