以枕木和碎石道床为轨下基础的铁路轨道结构在世界上已有百余年历史,这种传统的轨下基础在列车高速、重载的作用下,逐渐暴露出它的缺点。而宽混凝土枕线路是一种新型轨下基础,它的主要优点为支承面积大,能降低道床应力,道床变形小,线路稳定,行车平稳;密排铺设可减少道床脏污,持久地保持道床清洁,延长清筛周期;养护维修工作量少,能减轻劳动强度,减少作业次数,轨道稳定后,一般的养护工作量是钢 The railroad track structure based on sleepers and gravel roadbed is under the railroad track structure in the world for more than one hundred years. This traditional rail-based foundation gradually exposed its shortcomings under the high speed and heavy load of trains. The wide concrete sleeper line is a new type of under-rail foundation. Its main advantage is that the supporting area is large, the stress on the rail bed can be reduced, the deformation of the road bed is small, the line is stable and the traffic is smooth; the densely-laid pavement can reduce the dirt on the roadbed, Clean and extend the cleaning cycle; less maintenance and repair work, reduce labor intensity and reduce the number of operations, orbital stability, the general maintenance workload is steel