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| Application of Fuzzy Analytic Hierarchy Process in Choice of Maximum Track GradientValue |
| QI Yong-guo |
| China Railway Siyuan Survey and Design Group Co. Ltd,Wuhan, Hubei 430063, China |
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Abstract Research purposes: Choice of the maximum gradientof railway track involves in many factors. The fuzziness and relativity exist when these factors are considered two by two, so sometimes it is difficult to choose the maximum track gradient because many quantitative and qualitative aspects need to be considered to make a comprehensive evaluation.
Research conclusions: Regarding the Nanjing -Hangzhou Railway as a system, according to the track alignment, to pographical conditions and geological characteristics along the railway, the analyses of the effects of the different maximum track gradients on the construction safety and reliability, train operating costand adaptability of EMU are made with fuzzy analytic hierarchy process. Based on the analyses, it is recommended that the maximum track gradient of this railway is 12‰ for optimizing this railway system and the maximum track gradient in some areas can be 20‰ for protecting environmentand saving investment. Application of this method in choice of the maximum track gradient is effective and operable and it can be the reference to the similar work.
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Received: 09 April 2010
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2010, Vol. 27 
