接触网锚段关节线形分析与计算

研究目的:在客运专线施工中,电气化接触网锚段关节安装调整的方法及工艺水平将直接关系到弓网运行质量。因该区域内结构复杂,位置关键,其一直是施工重难点项目。目前,国内施工单位仍然采用的是人工模拟反复调整的方法,这样既浪费时间,而且质量很难得到保证,更不能适应我国铁路发展水平的技术要求。研究结论:本文针对接触网悬挂安装后的实际工作状态,提出接触网锚段关节悬挂调整线形选择方案,通过对接触线索微段受力分析,认为采用二次抛物线过渡是比较理想的选择,并以此为基础建立计算模型。通过武广及京沪客专大量施工应用实践表明,采用该方法计算的吊弦安装后,精确到位,勿需调整,测试结果完全能满足线路试验及运营要求。

Linear Analysis and Calculation of Anchor Segment Joint of Catenary

Research purposes: The installation and adjustment methods and the technology level of the anchor segment joint of catenary in construction of passenger dedicated line are crucial to the operation quality of the pantograph and catenary.The installation and adjustment of the anchor segment joint are always the difficult points in construction due to its complex structure and being in the key location.At present,the manually simulation adjustment is commonly used for it in China.In this way,it takes long time,it is very difficult to ensure the quality and it is unavailable for the technical requirements of the railway development in China. Research conclusions:According to the actual working state of the catenary suspension after the installation,the optional schemes are proposed for adjustment linear of the anchor joint suspension of the catenary.From the analysis of the loading in the micro-segment of the contact wire,it is believed using the secondary parabola for transition is an ideal choice,and based on it the computating model is established.The applications of it in construction of Wuhan-Guangzhou and Beijing-Shanghai passenger dedicated lines shows with this method the accuracy of the dropper is excellent without adjustment after installation,and the test results can meet the track test requirements and the operational requirements.