摘要
研究目的:我国高速铁路开通运营以来,部分线路接触网在列车经过时出现人为感观上的较大晃动。为查清问题的本质和原因,必须测量接触网晃动的精确位移值。基于图像的测试技术具有非接触、动态等优势,较适合检测接触网这样的特殊结构,尤其是它的非接触性能能确保在线测试时行车的安全。因此,采用图像测量进行高速铁路接触网在线实测研究能够分析现有接触网异常晃动的原因及晃动幅值,也给以后电气化铁路接触网在线实测提供技术支撑,弥补现有接触网在线检测手段的不足。研究结论:(1)接触网腕臂、正馈线肩架及承力索晃动实测值都较小,可疑异常晃动点与正常路段的点两者接触网振幅区别不大;(2)上下行之间没有耦合效应,弓网相互作用为接触网晃动的主要原因;(3)实测结果表明接触网支柱及零部件安全性满足规范要求,验证了人为感观上的不确定性,进一步消除排查了安全隐患;(4)基于图像的非接触测试技术安全性能好,动态实时得到测试数据,设备操作简单方便,为接触网在线实测提供了新的有效技术手段。
Research purposes： Some catenary system vibrated largely after the train since Chinese high - speed railway running, which came from an oral report of one rail worker on duty. Its accurate displacement must be measured in order to solve the problem. The measurement technique based on image has the advantages of non - contact and dynamic which is suitable for unique structure such as catenary system. The computer gets displacement value through analyzing image which may ensure train~ safety when on -line test is carrying out. The research not only can be used to analyze the cause of abnormal existing catenary shaking and swaying amplitude, but also can provide the technical support for catenary of electrified railway online real - time test. Research conclusions： （ 1 ） The measured amplitude of cantilever, shoulder brace of positive feeder and carrier cable was small relatively and consistent with other normal sections of the whole line. （2） The interaction between catenary and pantograph was the main reason for its vibration, without the coupling effect between up - bound and down - bound. （3） The accurate value of test result indicated that the amplitude of catenary is under the range allowably, whichverified the uncertainty of human sense and further clarified the safety hazard. （4） The non - contact measurement technique based on image can get the dynamic real time test data and have simple and convenient operation, which supplies subtle and suitable way for high -speed railway catenary systems real- time on- line test.
出处
《铁道工程学报》
EI
北大核心
2014年第9期97-101,共5页
Journal of Railway Engineering Society
关键词
高速铁路
接触网
非接触测试
图像处理
high -speed railway
catenary systems
non -contact testing
image processing
