一种新型钢筋桁架轨枕技术的研究  

Technical Study of a New Type of Steel Bar Truss Sleeper

作　　者：刘玉祥[1] 管吉波[1] 左一舟[1] 黄河山[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300142

出　　处：《铁道工程学报》2016年第12期88-92,98,共6页Journal of Railway Engineering Society

摘　　要：研究目的:为解决城市轨道交通无砟轨道中常用短轨枕和长轨枕存在的固有不足,通过研究提出一种新型钢筋桁架轨枕结构。借鉴高速铁路双块式轨枕的技术经验,结合城市轨道交通工程的实际情况,在力学计算分析的基础上,提出合理的钢筋桁架轨枕结构型式尺寸及设计技术要求,从而为城市轨道交通无砟轨道设计提供借鉴。研究结论:(1)为适应不同的制造条件,研究提出两种类型的钢筋桁架轨枕:单组桁架方案和双组桁架方案,单组桁架方案轨枕适用于利用目前城市轨道交通传统的轨枕制造技术制造,双组桁架方案轨枕适用于新建轨枕厂采用机械化流水线方式制造;(2)推荐的单组桁架方案轨枕结构为:一组钢筋混凝土轨枕块通过3根纵向主筋和横向、垂向连接钢筋组成的一组桁架连接成为整体,钢筋桁架埋设于轨枕块内,不伸出轨枕底部;(3)推荐的双组桁架方案轨枕结构为:一组钢筋混凝土轨枕块通过2组波纹形钢筋桁架连接成为整体,钢筋桁架上部钢筋埋设于轨枕内,下部伸出轨枕底部;(4)轨枕块的型式尺寸:轨枕块长540 mm,上宽260 mm,下宽280 mm,高度170 mm,采用C50钢筋混凝土结构;(5)通过力学计算分析,钢筋桁架轨枕在不同的荷载作用下,满足结构受力和变形要求;(6)研究的钢筋桁架轨枕在深圳市城市轨道交通三期工程的7、9、11号线中已大规模铺设,实施效果良好;(7)该研究成果可在城市轨道交通项目上推广应用。Research purposes： In order to solve the inherent defects problems existing comnlonly in short sleeper and long sleeper ballasted track of urban rail transport, a new type of steel bar truss sleeper is proposed through the study in this paper. On the basis of calculation and analysis in mechanics according to the experiences in high speed railway double block sleepers and combined with the actual situation of urban rail transport engineering, a reasonable types of steel bar truss sleeper structure dimensions and design technology requirements are put forward, which can provide the reference to the design of ballastless track in urban rail transport. Research conclusions： （ 1 ） In order to adapt to the different manufacturing conditions, two types of steel bar truss sleeper are studied and put forward： single truss scheme and two truss scheme. Single truss scheme sleeper is applicable to the traditional sleeper fabrication techniques of urban rail transport, and the two truss scheme sleeper is applicable to the new sleeper factory by a mechanized way manufacturing. （2） The structure of single truss sleeper structure is suggested as： a pair of reinforced concrete sleeper blocks are connected as a whole through a set of truss composed of 3 main longitudinal bars and connecting bar（ horizontal and vertical）, the steel truss is buried in sleeper block and notsticked out the bottom of the sleeper. （3） The structure of two truss sleeper is suggested as ： a pair of reinforced concrete sleeper block are connected as a whole through two corrugated steel bar trusses. The upper parts of steel bar truss is arranged in the sleepers, and the lower parts is out of the bottom of the sleepers. （4） The proposed size of sleeper block is： length of 540 mm, upper width of 260 ram, lower width of 280 mm, height of 170 mm. It uses C50 reinforced concrete structure. （5） According to mechanics analysis, the structure of steel bar truss sleeper meet stress and deformation requirements under the effects o

关 键 词：城市轨道交通 钢筋桁架 钢筋混凝土轨枕 轨道技术 结构设计 

分 类 号：U213.2[交通运输工程—道路与铁道工程]