• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 21 Issue 1
Feb.  2009
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Article Contents
CAI Xiaopei, LI Chenghui. Wheel/Rail Contact Irregularity in Crossing Zone of High-Speed Turnout[J]. Journal of Southwest Jiaotong University, 2008, 21(1): 86-90.
Citation: CAI Xiaopei, LI Chenghui. Wheel/Rail Contact Irregularity in Crossing Zone of High-Speed Turnout[J]. Journal of Southwest Jiaotong University, 2008, 21(1): 86-90.

Wheel/Rail Contact Irregularity in Crossing Zone of High-Speed Turnout

  • Received Date: 29 May 2007
  • Publish Date: 25 Feb 2008
  • To identify the characteristics of wheel/rail contact irregularity in crossing zone of high-speed turnouts,a numerical model was set up based on the least distance searching method and analyzing the structures of point rail and wing rail. The law of wheel/rail contact irregularity induced by different point hiding structures and wheel treads was investigated by taking a No.42 high-speed turnout for 350 km/h passenger dedicated line as an example.The research results show that the biggest irregularity is located at the gauge measure and wheel/rail contact points transferring from wing rail to point rail.Under the condition of the same point hiding structure and wheel tread,lateral irregularity plays a greater role than vertical irregularity.By adopting a horizontal point hiding structure and respectively reducing the high of point rail by 10.0,3.0 and 0.0 mm in the sections with a top width of 10.0,15.0 or 35.0 mm,wheel/rail contact irregularity can be controlled effectively.Along with the running of trains and the wearing of wheels,lateral irregularity will increase,while vertical irregularity will decrease.

     

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