哈大客运专线沈哈段位于东北严寒地区,铺设无砟轨道面临冬期漫长、极端最低气温低、年温差大,季节性冻害和雪害等不利条件,结合沿线的气候环境特点和工程特征,分析了国内外应用较为成熟的几种无砟轨道的技术特点和适应性,提出了无砟轨道的选型建议以及应用中需要研究解决的关键技术问题。 Harbin-Harbin Passenger Dedicated Line Shenha section is located in the northeast cold region, laying ballastless track facing a long winter, low extreme low temperature, annual temperature difference, seasonal frost damage and snow damage and other adverse conditions, along with the climate characteristics and engineering characteristics along the line, analysis The technical characteristics and adaptability of several ballastless orbits applied at home and abroad are put forward, as well as the selection of ballastless track and the key technical problems to be solved in application.