华东交通大学学报2015，Vol.32Issue(4)：18-24,7.
杭长高速铁路钢轨预打磨对短波不平顺的影响
Effects of Rail Pre-grinding on Short Wave Irregularities on Hangzhou-Changsha High Speed Railway
摘要
Abstract
High speed, comfort and security of high speed railways have attracted more attention of the mainte-nance department on short wave irregularities. Rail pre-grinding as a way of rail maintenance can eliminate rail surface defects and improve the welding joint smoothness. Based on rail pre-grinding in Hangzhou-Changsha high speed railway, this paper discusses the operation effect of pre-grinding on high speed railway in view of short wave irregularities. Results on moving average of mean square root and peak-to-peak value show that the ultralimit wavelength is within the 30-100mm range before pre-grinding. The operation of pre-grinding reduces the ultra-limit percentage obviously, and meets the first grade standard. From the aspect of 1/3 octave analysis, pre-grind-ing operation has limited improvement on short wave irregularities of 8-25mm wavelength, and it leads to the prominence of 20mm periodic waveform.关键词
高速铁路/钢轨预打磨/短波不平顺/1/3倍频程Key words
high speed railway/rail pre-grinding/short wave irregularities/1/3 octave analysis分类
交通工程引用本文复制引用
毛晓君..杭长高速铁路钢轨预打磨对短波不平顺的影响[J].华东交通大学学报,2015,32(4):18-24,7.基金项目
国家自然科学基金(51405210) （51405210）
