摘要
分析了提速条件下现行运到期限计算方法存在的问题,研究了提速条件下铁路各货运产品的日均运行运价公里,并对统计结果进行了χ2检验。提出了提速条件下运到期限的计算方法,并根据统计分析结果和有关文献,确定了各参数的取值范围,该计算方法可根据货运产品类别和运输区段线路状况进行动态调整。分析结果表明:各类货运产品的日均运行运价公里服从正态分布;利用现行运到期限计算方法得到的运到期限与货物实际送达时间的最大差值为4.5d,而利用新的计算方法得到的最大差值仅为0.8d,说明该计算方法能比较客观地反映提速条件下各类货运产品的送达时间。
The problems existing in present calculation methods of transit period were analyzed, the daily average running tariff kilometer of each kind of freight transport product was analyzed under speed-raising condition, and its statistical results were examined by adopting Х^2 testing method. A new transit period calculation method for railway freight under speed-raising condition was put forward, the value range of each parameter was determined according to statistical results and relative references. The method could be dynamically adjusted based on freight-product category and the railway line condition of transport section. Analysis result shows that the daily average running tariff kilometer of each kind of freight transport product obeys normal distribution; the maximum difference value between the transit period calculated by present method and the practical forwarding time of freight is 4.5 d, while it is only 0.8 d by adopting the new calculation method, so the method can objectively respond the forwarding time of each kind of freight transport product under speed-raising condition.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2009年第5期106-110,共5页
Journal of Traffic and Transportation Engineering
基金
教育部"春晖计划"项目(Z2005-1-62008)
关键词
铁路货物运输
运到期限
送达时间
铁路提速
统计分析
railway freight transportation
transit period
forwarding time
railway speedraising
statistical analysis
