摘要
通过轨温变化现场测试研究重载铁路高密度行车条件下直线和曲线地段轨温变化规律。试验结果表明:重载列车经过时,钢轨的温度由于受到列车风作用先降低,经过一定时间后升高;钢轨温度增加幅度自轨头、轨腰至轨底依次减小;大气温度不同列车通过时轨温变化也有所差异;列车通过直线段和曲线段的轨温变化趋势基本相同,但是曲线段钢轨的温度要比直线段钢轨温度高2℃左右。
The paper carries out in-situ measurements on the rail temperature of both straight and curve sections on highly-intense heavy haul lines and endeavours to conclude the changing patterns. The results indicate that as the train passes by,the rail temperature goes down first due to the wind included and then climbs up afterwards,during which the changing range tends to go down as the measurements moves from the rail head to the rail base. At the same time,environmental temperature is also found to be an influential factor. Also,it should be noted that although the changing patterns for straight and curve sections are found roughly consistent,the temperature measured at the latter is approximately 2℃ higher than that of the former.
出处
《铁道建筑》
北大核心
2014年第6期130-134,共5页
Railway Engineering
基金
国家科技支撑计划项目(2013BAG20B00)
关键词
重载铁路
现场测试
轨温变化
直线段
曲线段
Heavy haul railway
In-situ measurement
Change in rail temperature
Straight section
Curve section
