Abstract The transition between catenary tensioning sections is accomplished smoothly by overlapping a number of spans in each catenary section. This work presents an analysis of the overlap section in a high-speed railway catenary based on numerical simulations. The paper studies the influence on the system’s dynamic behaviour of features such as double cantilevers and tensioning devices efficiency. Four and five-span overlaps are compared and the effect of train speed and overlap contact wire geometry are also analysed. Finally, an entire catenary section is optimised by Bayesian Optimisation techniques, leading to a catenary configuration with an interaction force with a standard deviation notably lower than that provided by the nominal catenary design.

中文翻译：

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高速铁路接触网重叠段数值模拟分析

摘要 悬链线张拉段之间的过渡是通过在每个悬链线段上重叠多个跨度来实现的。这项工作提出了基于数值模拟的高速铁路接触网重叠部分的分析。本文研究了双悬臂和张紧装置效率等特征对系统动态行为的影响。比较了四跨和五跨重叠，还分析了列车速度和重叠接触线几何形状的影响。最后，整个悬链线部分通过贝叶斯优化技术进行优化，导致悬链线配置的相互作用力的标准偏差明显低于标称悬链线设计提供的标准偏差。