严寒地区高速铁路无砟轨道结构选型分析

为指导严寒地区高速铁路无砟轨道结构选型,结合严寒地区高速铁路的工程特点,分析严寒地区对无砟轨道的需求和选型原则。通过介绍我国双块式无砟轨道,CRTSⅠ型、Ⅱ型和Ⅲ型板式无砟轨道的主要特点及应用情况,从严寒地区高速铁路无砟轨道的适应性、施工性、养护维修及经济性等方面进行对比分析。结果表明:严寒地区应优先选用预制轨道板,CRTSⅠ型和Ⅲ型板式轨道具有较好的严寒适应性和耐久性,但CRTSⅢ型板式轨道的经济性更好,建议严寒地区无砟轨道应优先选用CRTSⅢ型板式无砟轨道。

Analysis of Ballastless Track Selection for High-speed Railway in Cold Area

In order to guide the ballastless trackstructure selection for high-speed railway in coldarea, the requirements and selection principles ofballastless track in cold area are analyzed in the light of the engineering characteristics of high speed railways in cold area. This paper introduces theapplications and technical characteristics of double block ballastless track, CRTSⅠtype, CRTSⅡtypeand CTS Ⅲ type slab track in China and analyzes the adaptability, construction, maintenance andeconomy of ballastless track. The results show that pre-cast slab should be fist selected for cold area. TheCRTSⅠtype and CTSⅢtype slab track have good adaptability and durability, but the CTSⅢtype slabtrack has better economic efficiency and the CTSⅢtype slab track should be prioritized in cold area.