A finite element approach to develop track geometrical irregularity thresholds from the safety aspect

• Autorzy: Miri A. , Mohammadzadeh S. , Salek H.

Identyfikatory

DOI

10.15632/jtam-pl.55.2.695

• Języki publikacji: EN

Abstrakty

EN

Riding quality and safety of rail tracks are directly influenced by track geometry; hence, their degradation along time could reduce safety and cause serious accidents. Standards propose thresholds for track geometrical parameters to keep track safety and riding comfort at an acceptable level. In this study, a method is proposed to select or define a set of proper thresholds for geometrical parameter irregularities according to desirable to safety level. The impact of track geometry irregularities on the derailment index has been investigated through the finite element model. The results suggest that twist and gauge shortage have a greater effect on the derailment index compared to the vertical profile of the track. Having the critical values of geometrical irregularities that result in derailment, safety factors of Iranian and Euro code standards in determining their thresholds are calculated and compared. It is shown that each standard has a unique set of safety factors that depend on speed and geometrical parameters.

Słowa kluczowe

EN

maintenance and inspection; track geometry parameters; finite element; Adams/rail software

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2017
• Tom: Vol. 55 nr 2
• Strony: 695--705
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Miri A.

• School of Civil Engineering, Sharif University of Technology, Tehran, Iran

autor

Mohammadzadeh S.

• School of Railway Engineering, Iran University of Science and Technology, Tehran

autor

Salek H.

• School of Railway Engineering, Iran University of Science and Technology, Tehran

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)