铁道标准设计2017，Vol.61Issue(11)：1-7,7.DOI:10.13238/j.issn.1004-2954.2017.11.001
高速铁路双块式无砟轨道路基地段结构设计与施工技术研究
Research on Structure Design and Construction Technology of Bi-Block Ballastless Track for Subgrade Sections of High-Speed Railway
摘要
Abstract
In order to improve project quality of structure design and construction technology of Bi-Block ballastless track,the functions of track slab and supporting layer for subgrade sections are analyzed,and two alternative design schemes are presented.The differences between the two lie largely in that the track slabs are continuous or un-continuous units.The main features and design elements of the two are also put forward,and structure stress analysis and steel bar solutions related to the two schemes are carried out respectively.The concrete strength grade of track slab is studied in terms of compressive strength,structure durability,fatigue strength and crack control requirements.The results show that C40 concrete for track slab is adequate in strength and the strength of concrete should not be much too high.Moreover,some problems of track slab and the supporting layer that may happen during construction are addressed based on the experiences in construction and operation of the current bi-block ballastless track.关键词
高速铁路/双块式无砟轨道/CRTS Ⅰ型/结构设计/道床板/路基/施工Key words
High-speed railway/Bi-block ballastless track/CRTS-Ⅰ type/Structure design/Track slab/Subgrade/Construction分类
交通工程引用本文复制引用
王森荣..高速铁路双块式无砟轨道路基地段结构设计与施工技术研究[J].铁道标准设计,2017,61(11):1-7,7.基金项目
中国铁路总公司专项课题(J2015C006) （J2015C006）
