摘要
基于CRTSⅠ、Ⅱ、Ⅲ型板式和双块式无砟轨道的结构特征,结合我国高速铁路工程实践,对比分析4种无砟轨道结构的技术经济性。结果表明:CRTSⅢ型板式无砟轨道结构稳定性、耐久性和环境适应性良好,并具有较好的下部基础适应性、可施工性和可维修性,综合性能最优;双块式无砟轨道建设成本低于各型板式无砟轨道,3种板式无砟轨道建设成本因下部基础不同而存在差异,我国高速铁路桥梁段占比较大,采用CRTSⅢ型板式无砟轨道建设成本相对较低;另外,CRTSⅢ型板式无砟轨道预期寿命更长,维修成本更低,有利于降低全生命周期成本。
Based on the structural characteristics of CRTS Ⅰ,Ⅱ and Ⅲ slab and double-block ballastless track,and combined with the engineering practice of high speed railways(HSRs)in China,the technological economics of four types of ballastless track structure was compared and analyzed.The results show that CRTS Ⅲ slab ballastless track is excellent in structural stability,durability and environmental adaptability;has good adaptability to substructure,constructability and maintainability,and is best in terms of comprehensive performance.The construction cost of double-block ballastless track is lower than that of various types of slab ballastless track.The construction costs of the three types of slab ballastless track are different due to substructure difference.The bridge section of HSRs in China accounts for a large proportion,and the construction cost of CRTS Ⅲ slab ballastless track is relatively low.CRTS Ⅲ slab ballastless track has longer service life and lower maintenance cost,which is more conducive to reducing the whole life cycle cost.
作者
王梦
王继军
刘伟斌
赵勇
施成
WANG Meng;WANG Jijun;LIU Weibin;ZHAO Yong;SHI Cheng(Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;State Key Laboratory for Track Technology of High-speed Railway,Beijing 100081,China)
出处
《中国铁路》
2021年第2期59-64,共6页
China Railway
基金
中国国家铁路集团有限公司科技研究开发计划项目(P2019G029)。
关键词
高速铁路
板式无砟轨道
双块式无砟轨道
建设成本
全生命周期
high speed railway(HSR)
slab ballastless track
double-block ballastless track
construction cost
whole life cycle
