高铁车站内直通线路浮置板轨道优选

Optimization of Floating Slab Track on Direct Passing Rail Route of High Speed Rail Way Station

随着中国高铁建设进程的不断推进,高铁车站的振动问题变得越来越突出,而与之相关的研究却较少.针对高铁车站直通线路车速较快的特点,建立了不同形式的直通线路-浮置板模型.从研究减振性能的角度出发,分析了浮置板模型的基频;从确保行车安全的角度出发,分析了在移动荷载作用下钢轨的最大位移和振动特点.结果表明,应用于高铁车站直通线路的浮置板结构应选取单板形式,并应适当地增加弹簧刚度和浮置板厚度等参数,以保证行车安全和减振效果.

Along with the construction of high speed railway, the vibration problem in the railway station becomes more and more evident. Aiming at the characteristic of high speed rail route in railway station, different models of high speed rail routes-floating slab tracks were established. From the view of vibration damping performance, the fundamental frequency of the floating slab was analyzed; from the view of traffic safety, the maximum displacement and vibration characteristics of rail under a set of moving load were analyzed. The results show that, the application of floating slab to the high speed rail route in railway station should be the single slab form, and in order to ensure traffic safety and damping effect, the stiffness of spring and the floating plate thickness should be appropriately increased.