Cristin-resultat-ID: 1816897
Sist endret: 27. oktober 2020, 11:23
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Exploring benefits of using blending splines as transition curves

Bidragsytere:
  • Tanita Fossli Brustad og
  • Rune Dalmo

Tidsskrift

Applied Sciences
ISSN 2076-3417
e-ISSN 2076-3417
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Volum: 10
Hefte: 12
Artikkelnummer: 4226
Open Access

Importkilder

Scopus-ID: 2-s2.0-85087831226

Beskrivelse Beskrivelse

Tittel

Exploring benefits of using blending splines as transition curves

Sammendrag

Track geometry is a fundamental subject in railway construction. With the demand for increased capacity in terms of load and speed, the need for suitable transitions between consecutive track sections is highly relevant. Properly constructed transition curves lead to improved travel comfort, increased safety, and reduced wear. The well known clothoid curve is widely used as a transition curve; however, the linear curvature is not sufficiently smooth to meet the requirements for railways carrying high speed trains or heavy hauls. Blending spline curves are flexible spline constructions possessing favourable smoothness properties at the end points, which makes them considerable for use as transition curves. This paper demonstrates some selected blending splines applied as transition curves between two existing circular arc segments selected from the Ofotbanen railway. The main results in this paper are related to the smoothness at the end points and the behaviour of the curvature of the curves, where the new transition curves were shown to be smoother than the original clothoid. Another new result is the observation that the proposed method allows for the improvement of existing railways without forcing extensive changes to the original track. Some representative examples are included to highlight the flexibility of this first instance of blending splines as transition curves.

Bidragsytere

Tanita Fossli Brustad

  • Tilknyttet:
    Forfatter
    ved Institutt for datateknologi og beregningsorienterte ingeniørfag ved UiT Norges arktiske universitet

Rune Dalmo

  • Tilknyttet:
    Forfatter
    ved Institutt for datateknologi og beregningsorienterte ingeniørfag ved UiT Norges arktiske universitet
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