CRTSⅢ型板式无砟轨道自密实混凝土技术研究与应用  

Study and Application of Self-compacting Concrete for HSR CRTS Ⅲ Slab Ballastless Track

作　　者：谭盐宾[1,2] 谢永江 杨鲁[1,2] 李林香 TAN Yanbin XIE Yongjiang YANG Lu LI Linxiang(Railway Engineering Research Institute, China Academy of Railway Sciences, Beijing 100081 State Key Laboratory for Track Technology of High-speed Railway, Beijing 100081, China)

机构地区：[1]中国铁道科学研究院铁道建筑研究所，北京 100081 [2]高速铁路轨道技术国家重点实验室，北京 100081

出　　处：《中国铁路》2017年第8期21-27,共7页China Railway

基　　金：国家自然科学基金项目(51408611);中国铁道科学研究院科技研究开发计划项目(2015YJ027)

摘　　要：CRTS Ⅲ型板式无砟轨道是我国具有自主知识产权的新型无砟轨道结构,其结构特点之一是采用了高稳定性自密实混凝土作为充填材料,与轨道板形成复合结构,共同承受列车动荷载。从CRTS Ⅲ型板式无砟轨道复合结构特点及其对充填材料的特殊要求、自密实混凝土性能指标、施工关键工艺以及工程应用等方面详细介绍CRTS Ⅲ型板式无砟轨道自密实混凝土研究与应用现状。研究和工程应用实践表明,自密实混凝土技术在我国高速铁路建设中具有广阔的应用前景,但也存在一些技术问题有待解决,应进一步加强板式无砟轨道结构用自密实混凝土配合比设计理论、施工技术和实体质量无损检测评估技术研究。CRTS Ⅲ slab ballastless track is a new type of ballastless track structure with independent Chinese intellectual property rights. One of its structural features is the use of highly stable, self-compacting concrete as filling material, forming with the track slab a composite structure, which bears the dynamic load of trains. This paper introduces in detail the study and application of CRTS Ⅲ slab ballastless self-compacting concrete from aspects such as structural characteristics of the composite layer of the CRTS Ⅲ slab ballastless track and its special requirements for filling materials, performance index of self-compacting concrete, key construction technologies and engineering application. Research and engineering practices show that self-compacting concrete technology enjoys good application prospect in the construction of high-speed railways in China, but there are some technical problems yet to be solved. We should further strengthen studies on design, construction and entity quality NDT and evaluation of self compacting concrete used in slab ballastless track structure.

关 键 词：高速铁路 CRTS?Ⅲ型板 无砟轨道 自密实混凝土 性能指标 关键工艺 

分 类 号：U214[交通运输工程—道路与铁道工程]