整体道床是新型轨下基础之一,它改变了传统的轨道组合,取消了道碴层,消除了道床的累积变形,大幅度地减少养护维修工作量。它具有结构简单、轨道稳定、道床坚固、外形整洁等优点。但是,由于整体道床的支承块、道床混凝土和基岩之间,存在着多层结合面。 Integral track bed is one of the new rail underbasis. It changes the traditional track combination, cancels the ballast layer, eliminates the cumulative deformation of the track bed and drastically reduces the maintenance workload. It has the advantages of simple structure, stable track, sturdy track bed and neat appearance. However, there is a multi-layered interface between the ballast bed and the bedrock because of the overall bearing block of the bed.