无碴轨道具有高稳定性、少维修、寿命长的优点,并在国外铁路获得了广泛应用,2005年德国出版的《轨道概论》对无碴轨道的缺点做了如下总结:1)Rheda投资要比有碴轨道多1·5倍以上。科隆—法兰克福线预算46亿欧元,实际费用大约为60亿欧元,增加大约30%,如此高的初期投资包括巨大的 The ballastless track has the advantages of high stability, less maintenance and long service life, and has been widely used in foreign countries. In 2005, the German track orbit introduced the shortcomings of ballastless track as follows: 1) Rheda Investment One and a half times more than ballasted tracks. The Cologne - Frankfurt route budget of 4.6 billion euros, the actual cost of about 6 billion euros, an increase of about 30%, such a high initial investment, including huge