论文部分内容阅读
目的分析动力参数,研究橡胶浮置板的力学参数对轨道结构动力性能影响.方法取相邻2个橡胶支座之间的轨道为轨道段组合单元,钢轨视为连续弹性支承Euler梁,浮置板视为矩形弹性薄板,扣件系统及橡胶支座视为弹簧阻尼单元,建立橡胶浮置板式轨道竖向振动模型,研究橡胶浮置板式无咋轨道的动力学参数.结果混凝土浮置板厚度、轨下扣件刚度和橡胶支座刚度的取值分别取为0.3～0.5 m、40 MN/m和20 MN/m时较为合理.结论采用建立的橡胶浮置板竖向振动分析模型对其进行动力参数分析是可行的,可为橡胶浮置板式轨道的设计提供参考.
Aim To analyze the influence of the mechanical parameters of the rubber floating plate on the dynamic performance of the track structure.Methods The track between two adjacent rubber bearings is taken as the combination unit of the track section.The rail is regarded as the continuous elastic support Euler beam, The plate is regarded as a rectangular elastic thin plate, the fastener system and the rubber bearing are regarded as spring damping units, and the vertical vibration model of the rubber floating slab track is established to study the dynamic parameters of the rubber slabless slamming track. Results The thickness of the concrete floating slab , The rigidity of rail underlay and the stiffness of rubber bearing are reasonable to 0.3 ~ 0.5 m, 40 MN / m and 20 MN / m, respectively.Conclusion The established model of vertical vibration analysis of rubber floating plate The analysis of dynamic parameters is feasible, which can provide reference for the design of rubber floating slab track.