天津地铁6号线三开道岔的应用研究

Applied Research of Three-way Turnout on Tianjin Metro Line 6

系统论述天津地铁6号线道岔选型,通过对三开道岔与普通道岔结构,侧向速度、导曲线半径、配线形式等经济和技术比较分析方法,定性和定量的阐述了地铁设计中根据车站周边房屋楼群、交通疏解、管线切改等周边环境的制约,选用三开道岔类型的合理性。结果表明:三开道岔虽磨耗较大,道岔配件和养护维修较复杂,但可避免或减少拆迁量、减少交通疏解干扰,在不经常运营的线路上应用具有一定的经济和社会效益。

This paper discusses systematically the turnout model selection of Tianjin Metro Line 6.By means of comparative analysis between the three-way turnout and the ordinary turnout on the structure form,side direction speed,radius of lead curve,wiring form and other aspects of economical efficiency and technology property,this paper describes qualitatively and quantitatively the rationality for selecting the three-way turnout under the constraints of the building group,traffic untwining,pipeline realignment and other surrounding environment.The research results show that the three-way turnout may be companied with larger abrasion,more complex accessaries and a lot of maintenance requirements,but it can reduce the quantity of demolition and removal of the project,and can reduce the interference of traffic untwining.So three-way turnout has a certain economic and social benefit for this kind of railway line which is not under the condition of being operated frequently.