桥上无缝道岔设计评估及注意事项探讨

随着我国铁路和城市轨道交通的建设和发展,跨区间无缝线路的广泛铺设,越来越多的桥上铺设无缝道岔,而桥上无缝道岔较一般的桥上无缝线路受力变形更为复杂,道岔几何形位更难保持。基于桥上无缝道岔梁轨以及道岔股道之间相互作用理论,分析了桥上无缝道岔整体设计的检算评估方法,并阐述了设计中的注意事项。

Study on Design Evaluation and Precautions of Weld Turnout on Bridge

With the construction and development of railway and urban rail transit as well as wide application of trans-sec-tion continuous welded rail（CWR）,more and more welded turnouts are laying on bridges.However,the force and deform-ation are more complex than general CWR,and it is difficult to keep the track geometry.Based on the interactions between beam and rail and among the turnout tracks,this paper analyzes the check-calculation method of overall design about wel-ded turnout on bridge,and describes the design precautions.