摘要研究目的：根据5铁路主要技术政策6,在经济发达、客运量较大,又有一定数量货物不可分流的平原或丘陵地区,宜修建以客运为主时速200~250 km的客货共线快速铁路。由于缺乏新建250 km /h客货共线铁路设计暂行规定,在石太客运专线、南广快速等铁路工程设计中造成采用的主要技术参数不统一。为使选择的主要技术参数与客货列车速度相匹配,在参照相关设计暂行规定的基础上,对新建250 km /h客货共线快速铁路主要技术参数的选取进行探讨,提出相应的建议值。
研究结论：通过研究和对比分析,提出了新建250 km /h客货共线快速铁路主要技术参数的建议值:最小平面曲线半径:一般5 200 m、困难4 500 m;夹直线和圆曲线最小长度:一般200 m、困难150 m、特别困难125 m;不同平面曲线对应的缓和曲线长度等,可供工程设计中参考。
Abstract：Research purposes:According to the Major Technical Polices of Railways，the 250 km／h railway line mixed for passenger and freight traffic(mainly for passenger service)should be built in economically—developed plain or hilly area with large volume of passenger and certain volume of freight．As there is no Interim Provisions for design of 250 km／h Railway Line for Mixed Passenger and Freight Traffic，the main technical parameters adopted for Shijiazhuang—Taiyuan Passenger Dedicated Line are different from Nanning—Guangzhou Fast—speed Railway．Therefore，it is necessary to research the choice of main technical parameters and offer the reference values for 250 km／h railway line for mixed passenger and freight traffic on the base of relative provisions SO as to well match the parameters with the train speed．
Research conclusions: Through research and comparison analysis，the main technical parameters for 250 km／h railway line for mixed passenger and freight traffic are as follows：the minimum curve radius length is respectively 5 200 m in ordinary section and 4 500 m in difficult section，and the minimum length of tangent between Curves and circular curves respectively is 200 m in ordinary section．1 50 m in difficult section and 1 25 m in extremely difficult section．The relative lengths of transition Curves on different plains can be as the reference in design．
杨岳勤. 新建250 km /h客货共线快速铁路主要技术参数的选择[J]. 铁道工程学报, 2009, 26(7): 38-42.
YANG Yue—qin. Choice of Main Technical Parameters for 250 km／h Railway Line for Mixed Passenger and Freight Traffic. 铁道工程学报, 2009, 26(7): 38-42.
2009, Vol. 26 
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