铁路道岔轨距加宽与构造加宽研究

Research on the Widening Track Gauge and Structure Gauge of Railway Turnout

研究目的:铁路道岔侧股轨距是小号码道岔平面线型设计的关键,构造加宽引起的曲股最大轨距是其中的重要项点。铁路工务部门需要构造加宽作为道岔铺设、维护等工作的理论依据。本文提出的构造加宽计算方法可供道岔设计及施工人员借鉴。研究结论:通过对小号码道岔轨距加宽规律的研究,综合考虑曲线线型、尖轨类型、道岔始端轨距、尖轨尖端轨距、侧线轨距等因素,分析了道岔转辙器部分构造加宽的成因并提出了各种情况下的构造加宽计算方法,进一步完善了构造加宽的定义,开发了道岔构造加宽的通用计算程序。

Research purposes：The track gauge in diverging line plays an important role in the geometry design of small turnouts and among which,the maximum gauge caused by structure widening is an important item.Structure widening is needed as theoretical basis for laying and maintenance of turnouts.The calculation methods presented in this paper for structure widening can offer the reference to turnout design.Research conclusions：Through the research on track gauge widening rules of small turnout and comprehensive consideration of the curve geometry,type of blade,gauge at entry of turnout,gauge at toe of blade,gauge in diverging track,etc,the analyses of the reason for structure widening in switch panel are made,the calculation methods for structure widening in any case are put forward,the definition on structure widening is given and a general calculation program for turnout structure widening is developed.