中国铁道科学2011，Vol.32Issue(6)：9-15,7.
基于轮轨蠕滑最小化的钢轨打磨研究
Study of Rail Grinding Based on Wheel Rail Creep Minimization
摘要
Abstract
According to the researches on the formation mechanism of wheel rail creep, it is found that the rolling radius difference of wheel rail contact is an important parameter affecting wheel rail creep. By using vehicle dynamics software NUCARS and selecting different rail profiles as well, simulation was carried out on the effects of the rolling radius difference on wheel-rail interaction. Based on this, it is proposed that wheel rail creep should be eliminated or reduced by rail grinding. Accordingly, the wheel rail interaction can be improved and the service life of rail can be prolonged. Theoretical calculation and on-site rail grinding tests show that after the application of rail grinding to Da-Qin heavy haul railway, the rolling radius difference has been reduced. The joint contact between the rail profile and wheel has reduced wheel-rail creep force, lateral force and rolling resistance. The steering characteristics of the bogie have been improved. The average side wear of rail has been reduced almost 50%. The carrying gross weight of rail has been increased from 9×108 t to 15 ×108 t above.关键词
钢轨打磨/轮轨关系/蠕滑/滚动半径差Key words
Rail grinding/Wheel-rail interaction/Creepage/Rolling radius difference分类
交通工程引用本文复制引用
郭战伟..基于轮轨蠕滑最小化的钢轨打磨研究[J].中国铁道科学,2011,32(6):9-15,7.基金项目
国家"八六三"计划重点项目(2009AA110302) （2009AA110302）
铁道部科技研究开发计划项目(2008G011-A) （2008G011-A）
