路基上减振双块式无砟轨道结构设计合理性分析

对于穿越居民建筑物和人口密集场所的铁路,为减少列车运行产生的振动与噪声对人们生活和工作的影响,减振型无砟轨道结构形式逐渐被广泛采用。以成渝客专途经的重庆市沙坪坝站改工程为依托,提出适合该站需求的减振双块式无砟轨道结构,并进行了设计。运用Ansys有限元分析软件对设计的路基上减振双块式无砟轨道结构进行受力分析。结果表明:该轨道结构强度和裂纹宽度均满足规范要求,在一定程度上说明该轨道结构设计的合理性。

Rationality Analysis of Structural Design of Damping Double-block Ballastless Track in Roadbed

For railway passing through residential building and places with dense population, to reduce the influence of vibration and noise generated by trains on people’s life and work, the damping ballastless track structure type is gradually adopted. Relying on Chongqing Shapingba Station of Chengdu-Chongqing Passenger Special Line, the ballastless track structure meeting the requirement was put forward for this station and the track structure was designed. The Ansys finite element software was adopted to perform stress analysis for damping double-block ballastless track structure. The results show that the track structure strength and crack width meet the specification requirements, which means that the track structure design is reasonable to some extent.