Home  About Journal  Editorial Board  Instruction  Subscription  Contact Us   Message Board  
JMT 2011, Vol. 19 Issue (1) :12-18    DOI: 10.3969/j.issn.2095-087X.2011.01.003
Articles Current Issue | Next Issue | Archive | Adv Search << Previous Articles | Next Articles >>
Reasonable compensation coefficient of maximum gradient in long railway tunnels
Sirong YI, Liangtao NIE, Yanheng CHEN, Fangfang QIN*
School of Civil Engineering, MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, China

Abstract
Reference
Related Articles
Download: PDF (452KB)   HTML 0KB   Export: BibTeX or EndNote (RIS)      Supporting Info
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,and revised with modern train and engineering parameters.A calculation model of aerodynamic drag when the train goes through a single-tracked tunnel was built.Finally,the concept of maximum calculated gradient was adopted to revise the formula for compensation of the gradient in railway tunnels.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
Sirong YI
Liangtao NIE
Yanheng CHEN
Fangfang QIN
Keywordsrailway tunnel   maximum gradient   profile   gradient compensation     
Received 2010-10-16;
Cite this article:   
Sirong YI, Liangtao NIE, Yanheng CHEN, Fangfang QIN.Reasonable compensation coefficient of maximum gradient in long railway tunnels[J]  JMT, 2011,V19(1): 12-18
URL:  
http://jmt.swjtu.edu.cn/EN/10.3969/j.issn.2095-087X.2011.01.003      or     http://jmt.swjtu.edu.cn/EN/Y2011/V19/I1/12
Copyright 2010 by JMT