欧洲跨境接触网对不同受电弓的适应性研究

Research on Adaptability of European Cross-border Overhead Contact Line System to Different Pantographs

研究目的:基于欧洲各国铁路的受电弓弓头长度不完全一致,跨边境铁路有时需要设置受电弓转换区,当转换区运行两种不同的受电弓时,接触网需要兼容设计,不但要考虑受电弓自由通行的动态轮廓,还需要考虑接触线最大允许横向风偏。本文研究以匈塞铁路设置转换区为基础,通过分析两种受电弓的横向偏移和动态轮廓,研究转换区内接触网对弓头长度1 600 mm和1 950 mm受电弓的兼容设计。研究结论:(1)采用插值法确定两种受电弓运行的动态轮廓,在转换区内,为了确定接触线最大允许风偏和最大跨距,受电弓最大允许横向偏移按照弓头长度最短的受电弓计算,为了使接触网悬挂设备和受电弓动态轮廓相适应,受电弓限界按照弓头长度最长的受电弓计算;(2)本研究成果对跨境铁路的设计和施工具有指导意义,有利于国内外接触网设计标准的进一步融合,有利于中国标准接触网体系的进一步完善。

Research purposes:Based on the fact that the pantograph head lengths of European countries'railways are not entirely consistent,pantograph conversion areas are required for some cross-border railways.As two different pantographs running in the conversion area,the overhead contact line system needs to be designed for compatibility,taking into account the dynamic profile of the free passage of the pantograph and the maximum permissible lateral wind deflection of the contact line.Based on the conversion area of the Hungary-Serbia railway,the compatible design of the overhead contact line system for pantographs with head lengths of 1600 mm and 1950 mm were investigated by analyzing their lateral deviations and dynamic profiles.Research conclusions:(1)The dynamic profile of the running of the two pantographs was determined by the interpolation method.In the conversion area,in order to determine the maximum permissible wind deviation and the maximum span of the contact line,the maximum permissible transverse deviation of the pantograph was calculated according to the pantograph with the shortest bowhead length.The pantograph limit was calculated according to the pantograph with the longest bowhead to ensure the contact suspension equipment and the dynamic profile of the pantograph compatible.(2)The research results serve as guidance for the design and construction of cross-border railways,and are conducive to the further integration of domestic and international design standards and the further improvement of Chinese standard.