跨座式轻轨钢轨道梁静动力分析

Analysis of Static and Dynamic Forces of Steel Rail Beam for Straddle Type Light Rail Transit

以重庆跨座式单轨交通线路上一钢轨道梁为研究对象,建立空间离散模型,进行静力和动力分析。结果表明,该轨道梁在各个荷载工况下应力水平较低,远远小于屈服强度,轨道梁整体刚度大,具有较好的动力性能,结构设计合理、安全,为此类桥梁的设计提供理论依据和技术参考。

In this paper, a steel rail beam of the Straddle Type Monorail Light Rail Transit in Chongqing is taken as the research object, the spatial discrete model for the type of the beam is established and analysis of static and dynamic forces of the beam is made. The results of the analysis show that the stress levels of the rail beam under different load cases are low, far lower than the yield strength, and the global stiffness of the beam is great, the beam has good dynamic performance, the design of the beam structure is rational and safe. The analysis in the paper may provide theoretic bases and technical reference for the design of similar bridges.