摘要
通过武广客运专线某路桥过渡段的现场车检数据分析,对高速铁路路桥过渡段轮轨力随列军速度的变化规律进行研究。结果表明,动车通过路桥过渡段时轮轨垂向力明显增大,且当车速达300km·h^-1及以上时增幅更加明显;在200-340km·h^-1车速范围内,轮轨垂向力的变化范围为31.1~100.46kN,最大轮轨垂向力是过渡段内轮轨垂向力有效值的125%~147%;各速度级下的轮轨垂向力均符合正态分布,其平均值基本在50~60kN范围内,但动车速度越大,轮轨垂向力值越离散;置信概率为99.4%时预测的过渡段上最大轮轨垂向力值在71~90kN范围内。
The change rule of wheel-rail force with train speed in the embankment-bridge transition section of high-speed railway was studied by analyzing the train test data of a certain embankment-bridge transition section of Wuhan-Guangzhou passenger dedicated line. The results show that wheel-rail vertical force is significantly increased while EMU passing through the embankment-bridge transition section, and the trend of increase is more obvious when the train speed is up to 300 km · h^-1 or above. The variation range of the wheel-rail vertical force is 31.1-100. 46 KN when the speed range of train is 200-340 km · h^-1. The maximum wheel-rail vertical force is 125-147% of the virtual value of the wheel-rail vertical force in embankment-bridge transition section. The value of wheel-rail vertical force of each level speed conforms to the normal distribution, the range of the average value is about 50-60 kN, but the value of wheel-rail vertical force is more discrete with the increase of train speed. When confidence probability is 99.4%, the predicted maximum value of wheel-rail vertical force in the embankment-bridge transition section is 71-90 kN.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2012年第B08期65-68,共4页
China Railway Science
基金
铁道部科技研究开发计划项目(2010T001-A)
关键词
高速铁路
路桥过渡段
轮轨垂向力
正态分布
测试数据分析
High-speed railway
Embankment-bridge transition section
Wheel-rail vertical force
Normaldistribution
Test data analysis