Reasonable compensation coefficient of maximum gradient in long railway tunnels |
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| Authors: | Sirong YI Liangtao NIE Yanheng CHEN Fangfang QIN |
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| Affiliation: | School of Civil Engineering, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | This paper deals with the theory and calculation methods for compensation of the gradient in railway tunnels through theoretical analysis,numerical calculation,and statistic regression methods.On the basis of the principle that the resultant force is zero,the formula of the maximum calculated gradient was derived for the freight and passenger line and high-speed passenger special line.The formula of aerodynamic drag in tunnel is provided using the domestic and foreign relevant experimental investigations,an... |
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| Keywords: | railway tunnel maximum gradient profile gradient compensation |
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