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道岔是轨道结构的最薄弱部分,是限制列车运行速度的关键设备。随着铁路提速工作的全面展开,跨区间无缝线路的铺设,道岔无缝化摆到研究课题之列。除了道岔平面设计参数、道岔结构设计以及电务转换设备需要研究外,道岔的长心轨与翼轨的联接方式也需要关注。因为这是铺设跨区间无缝线路,传递温度力的关键技术和行之有效的方案。心,翼轨之间的联接有多种办法,最常见的联接方法是机械联接(螺接),这种方法在振动严重的情况下很容易失效；再
Turnout is the weakest part of the track structure is to limit the speed of the train running the key equipment. With the speeding up of railway work in full swing, laying of cross-section seamless lines and seamless turnout are listed in the research topics. In addition to the turnout plane design parameters, turnout structure design and power conversion equipment needs to be studied, the long rail and rail joints of the turnout need to pay attention. Because this is the laying of cross-section seamless lines, the transfer of temperature and the key technologies and effective programs. There are many ways to connect the heart and the wing rail. The most common connection method is mechanical connection (screw connection). This method is very easy to fail under severe vibration.