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研究目的:桥上纵连板式无砟轨道的轨道和桥梁结构通过锚固限位装置耦合在一起,在温度力、制动力等荷载共同作用下,桥上纵连板式无砟轨道系统的受力变得相对复杂。通过本文的研究,分析相关技术问题,并在结构设计时加以关注。研究结论:直线地段桥梁墩身检算时可不考虑底座板内的温度力;底座板检算时要考虑底座板刚度的折减,并将温度力作为主力、制动力作为附加力进行检算,且应考虑底座板具有较高刚度的工况;连续通过两桥之间的短路基时,轨道系统的温度力为内力(自平衡),摩擦板上承受的力要比设置端刺时小;模态分析发现,桥梁和轨道结构的反相位振动成为轨道拍打梁面的重要原因之一。
Research purposes: The track and bridge structure of bridge slab-type ballastless track are coupled together by anchoring and limiting device. Under the combined action of temperature force and braking force, the force change of bridge slab-type ballastless track system It is relatively complicated. Through the research of this article, we analyze the related technical problems and pay attention to the structural design. Research conclusions: When calculating the bridge piers of straight-line section, the temperature force in the base plate can not be taken into consideration; the stiffness reduction of the base plate should be considered in the calculation of the base plate, and the temperature force is taken as the main force, And should take into account the base plate with high rigidity conditions; continuous passage of short-circuit between the two bridges, the rail system for the internal force of force (self-balancing), the friction plate to withstand the force than the set when the end of spines; Modal analysis shows that the anti-phase vibration of the bridge and track structure becomes one of the important reasons for the track slamming beam surface.