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Abstract Abstract：Research purposes： Regional railway designed speed of 100 ~ 160 km/h is a high-speed, high-density, mass transit type passenger dedicated line. With the development of urbanization in our country, the demand for regional railway construction in the city is more and more big; the standard of the running regional railway is not uniform. Combined with the characteristics of regional railway, regional railway profile standard should be researched from several aspects of main line interval maximum gradient, the conditions of long slope setting, the connection between adjacent grades, minimum length of grade, to provide a reference for regional railway project design and specifications. Research conclusions： (1) The main line maximum slope can be used in 35 per thousand. (2) Vertical curve should be set up when gradient difference between adjacent grades is greater than or equal to 3 per thousand. (3) Minimum length of grade should not be less than 200 m and the adjacent vertical curves do not overlap. (4) The standard of regional railway profile is lower than Code for Design of Intercity Railway, Code for Design of Railway Line, Code for Design of Metro; the standard of the maximum gradient is the same to Japan, France and German, the standard of gradient difference of vertical curve is lower than the French and German. (5)The research results could provide references for regional railway profile optimization standard and code compilation.
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Received: 28 March 2017
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2017, Vol. 34 
