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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.8 P.878~885

10.1631/jzus.2005.A0878


The critical loading for lateral buckling of continuous welded rail


Author(s):  SUNG Wen-pei, SHIH Ming-hsiang, LIN Cheng-I, GO Cheer Germ

Affiliation(s):  Department of Landscape Design and Management, National Chin-Yi Institute of Technology, Taiwan 41111, China; more

Corresponding email(s):   sung809@chinyi.ncit.edu.tw

Key Words:  Thermal effect, Finite Difference Method, Monte Carlo Method, Buckling load


SUNG Wen-pei, SHIH Ming-hsiang, LIN Cheng-I, GO Cheer Germ. The critical loading for lateral buckling of continuous welded rail[J]. Journal of Zhejiang University Science A, 2005, 6(8): 878~885.

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author="SUNG Wen-pei, SHIH Ming-hsiang, LIN Cheng-I, GO Cheer Germ",
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DOI - 10.1631/jzus.2005.A0878


Abstract: 
The most significant differences between continuous welded rails (CWRs) and general split-type connectors are axial compression in the longitudinal direction, buckling stability and other issues generated under the influence of thermal effect. Under thermal effect, a dynamical behavior similar to that of a beam fixed on two sides occurs in the central locked area of the welded rail, as there is axial compression but no possibility of sliding. Continuous welded rails do not contract or expand, and are supported by the dynamical system made up of ballasts and rail clips. The rail-support system mentioned above has the features of non-uniform material distribution and uncertainty of construction quality. Due to these facts, the dynamics method based on the linear elastic hypothesis cannot correctly evaluate the rail’s buckling conditions. This study is aimed at applying finite Difference Method (FDM) and Monte Carlo Random Normal Variables Method to the analysis of welded rail’s buckling behavior during the train’s acceleration and deceleration, under thermal effect and uncertain factors of ballast and rail clips. The analysis result showed that buckling occurs under the combined effect of thermal effect and the train’s deceleration force co-effect and the variance ratio of ballast and rail clips is over 0.85, or under the combined effect of thermal effect and the train’s acceleration force when the variance ratio is over 0.88.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[9] Kerr, A.D., 1974b. On the Stability of the Railroad Track in the Vertical Plane. Rail International, p.131-142.

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[13] Naylor, T.H., 1969. Computer Simulation Techniques. John Wiley and Sons.

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Open peer comments: Debate/Discuss/Question/Opinion

<1>

Miguel R. Bugarin@University of A Coruna<mbugarin@udc.es>

2015-10-20 22:24:42

I want to download the article to read it. Tank you

earnest@engineer<adenng10@gmail.com>

2015-03-29 14:16:04

GIVE downloadable informations.

xue song@dalian university of technology<s.xue@mail.dlut.edu.cn>

2012-01-06 15:46:56

extremely useful thank you

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