CRTSⅠ双块式无砟轨道道床板裂缝防治技术

Preventive technologies of CRTS Ⅰ double-block ballastless track bed board cracks

结合沪昆客专长昆湖南段CRTSⅠ型双块式无砟轨道施工实例,从结构设计、温度变化、混凝土施工等方面出发,总结分析了双块式无砟轨道裂缝产生的原因,并对混凝土配合比设计及道床板施工关键点控制措施进行了阐述,以保证无砟道床的施工质量。

Starting from aspects of structural design,temperature alteration and concrete construction and so on,combining with CRTS Ⅰ double-block ballastless track construction of south Hunan section of Hu-Kun passenger special railway line example,the paper analyzes double-block ballastless track cracking causes,and describes concrete mixing proportion design and critical track bed board construction points and control measures,with a view to guarantee ballastless track bed construction quality.