朔黄重载铁路提速试验研究  

Experimental Study on Speed Increase of Shuohuang Heavy-haul Railway

作　　者：石江[1] SHI Jiang(Shuohuang Railway Development Co Ltd,Suning Hebei 062350,China)

机构地区：[1]朔黄铁路发展有限责任公司

出　　处：《中国铁路》2019年第12期77-83,共7页China Railway

基　　金：中国神华能源股份有限公司科技创新项目（神朔科技合〔2017〕7号）

摘　　要：重载铁路是货运专线铁路的特殊类型,其提速对于提高我国铁路运量和增加经济效益具有显著影响。以朔黄铁路北岗中桥为研究对象,通过现场动力性能试验,研究列车在提速情况下对桥梁结构动力性能的影响。通过对试验结果分析得出:在C64、C70与C80编组列车作用下,试验测试速度范围内,实测桥梁动力响应与列车速度关系不明显,梁体跨中横向振幅等随列车速度的提高呈增长趋势,但增长幅度较小,桥涵结构可满足提速至时速80 km的安全运营要求。Heavy-haul railway is a special type of freight-dedicated railway,and its speed increase has a significant impact on increasing China’s railway traffic and economic benefits.Taking the Beigang Medium Bridge of Shuohuang Railway as the study object,the effect of accelerated train on dynamic performance of bridge structure was studied through the field dynamic performance test.The analysis of the test results shows that with C64,C70 and C80 trains,the relationship between the measured dynamic response of bridge and the train speed is not obvious within the range of test speed.As for the beam span,the lateral amplitude increases,by a small growth rate,with the speed acceleration of train.The bridge and culvert structure can meet the operation safety requirements of acceleration up to 80 km/h.

关 键 词：重载铁路 动力性能试验 适应性分析 振幅 加速度 

分 类 号：U218[交通运输工程—道路与铁道工程]