近年来已有越来越多的铁路认识到,混凝土轨下基础需要养护维修少,可抵偿开始投资大的问题,而且特别适合铺用在困难地段。西德铁路就是这样从混凝土轨下基础可能适用于高速新线,例如曼海姆～斯图加特的隧道和高架建筑来考虑,现正在运输繁忙的线路上进行五种混凝土轨下基础新设计的铺设试验,另在运量较小的线路上铺设 In recent years, more and more railroads have realized that the foundation under the concrete rail needs less maintenance and repair, which can offset the problem of large initial investment, and is especially suitable for laying in difficult locations. This is how the West Rail railway is under consideration when concrete underbeds may be suitable for high-speed new lines such as tunnels and elevated buildings in Mannheim-Stuttgart. Five new laying tests for new under-rail concrete foundations are being carried out on busy lines , And the other on the smaller volume of the laying of the line