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

CAI Xiaopei; LI Chenghui

Volume 21 Issue 1

Feb. 2009

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Journal of Southwest Jiaotong University > 2008 > 21(1): 86-90.

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.

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.

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

Received Date: 29 May 2007
Publish Date: 25 Feb 2008

Abstract

Abstract

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.
- crossing zone,
- point rail,
- point hiding structure,
- wheel/rail contact,
- irregularity

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References

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