辛泰线跨线建筑物接触网通过方案的比选研究

摘要

Overpass bridge scheme is a hot potato of the OCS speciality.There are many factors to consider when choo-sing a scheme.Previous researches are simpler on the model and less authenticity.This paper mainly studies theoretical model analysis without icing,and finally to the four common through schemes,it takes XinTai line electrification recon-struction project as an example,aims at the complexity of the different regional conditions and constraints of diversity,an-alyzes and gives the method of selecting schemes as well as the method of calibration under varies of working conditions. In this paper,icing effect should be considered at the lowest point of the contact line in bridge crossing scheme when ver-ified.The analysis result is suitable to actual circumstances,which has a profound significance to the guidance of future construction.%跨线建筑物接触网通过方案是接触网专业重点要解决的难题。选择何种通过方案，需要考虑的因素很多，以往研究在模型上简化较多，真实性较差。文章从重点考察有无覆冰情况下理论模型分析，最后到4种常见通过方案探讨和结合辛泰线电气化改造工程实例，针对不同地区工况的复杂性、约束条件组合的多样性，分析并给出了选择通过方案的判别方法以及不同通过方案各种极限工况状态的校验方法。文中通过实例可以看出覆冰影响在跨线桥通过方案中接触线最低点高度校验环节应给予考虑，分析结果是切合实际的，对日后的施工有着深刻的指导意义。