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Journals / ARI The Bulletin of the Istanbul Technical University / 2004 / Cilt: 54 - Sayı: 1

The new generation transition curves

Ergin TARI
Pages
34–41
Publication Date
2022-10-11
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In this paper, each of these curves has been examined by using the function of lateral change of acceleration in motion model with constant velocity.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The necessity for the curves, which have much better vehicle-road dynamical properties, has arisen since the last quarter of the 20 th century, because the speed used especially on the railways was increased.
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Key Findings & Data:The recently invented superior curves can be considered as Sinusoidal curve, Baykal curve, Tarı-1 curve, and Tarı-2 curve.
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Conclusion & Impact:In this paper, each of these curves has been examined by using the function of lateral change of acceleration in motion model with constant velocity.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The necessity for the curves, which have much better vehicle-road dynamical properties, has arisen since the last quarter of the 20 th century, because the speed used especially on the railways was increased. Although the dominance of the spiral curve as a transition curve has been still in progress by means of the common and wide knowledge base and infrastructure such as lots of ready to use software and the traditional rules of the responsible facilities, many investigations have been carried out on developing new curves, which can be used for the design of horizontal geometry and have many advantages with respect to road dynamics, because the spiral curve has been realized that it is not adequate for the road dynamics. So the transition curves superior for road dynamics have been invented by using the properties of vehicle-road dynamics, represented by the function of lateral change of acceleration that is the most important criteria to evaluate the curves in this manner. The recently invented superior curves can be considered as Sinusoidal curve, Baykal curve, Tarı-1 curve, and Tarı-2 curve. Sinusoidal curve is a known and applied curve joining a straight line with a circular arc by providing the condition of second-degree contact related with properties of vehicle-road dynamics. Baykal curve is a fundamental curve joining two straight lines without the necessity of a circular arc and it is the first realization of the new generation curves mentioned in the paper. Tarı-1 curve is a new curve joining a straight line with a circular arc by providing the condition of second-degree contact. Tarı-2 curve is a superior implementation of Baykal curve by providing the condition of second-degree contact. In this paper, each of these curves has been examined by using the function of lateral change of acceleration in motion model with constant velocity.

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Cite This Article

TARI, E. (2022). The new generation transition curves. ARI The Bulletin of the Istanbul Technical University, Cilt: 54 - Sayı: 1, 34–41. https://ajindex.com/articles/448150

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References (9)

  1. Winterhoff, Die Ausbildung von Strassenkrümmungen nach der Lemniskate (Verkehrstechnik, Germany, 1933)
  2. R. Klein, Beitrag zur Gestaltung der Übergansbögen (Gleistechnik und Fahrbahnbau, Germany, 1937
  3. F.Birman, Gleisgeometrie und Kunstruktion des Oberbaues von Schnellfahrstrecken, ETR-Eisenbahntechnische Rundschau, Heft 12, Ger­many, pp.513 (1968)
  4. B.K. Roy, Journal of Transportation Engineer­ing 120, 674 (1994)
  5. S.K. Rao, Journal of Transportation Engineering 121, 169 (1995)
  6. A. Kobryn, Zeitschrift für Vermessungwesen 116, 284 (1991)
  7. A. Kobryn, Zeitschrift für Vermessungswesen 93, 227 (1993)
  8. P. Schuhr, Rail International 18, 17 (1986)
  9. D, Kahler, Vermessungstechnik' und Raumordnung 52, 10 (1990). [10]M. Lipicnik, Journal of Transportation Engi­neering 124, 546 (1998). [11]O. Baykal, ASCE Journal of Surveying Engi­neering 122, 132 (1996). [12]E. Jacobs, Vermessung-Ingenieur 87, 3 (1987). [13]E. Tan and O. Baykal, A New Transition Curve,Proc. Symp. 1st Turkish-German Joint Geodetic Days, Istanbul, 1995. [14]E. Tan, Spline as a Route Element (In Turkish),Proc 5th Symp. on The Use of Computer in Civil Engineering, Istanbul, 1996. [15]E. Tan, Ph.D. Thesis, ITU (1997). [16]E. Tan and O. Baykal, A New Transition Curve Joining A Straight Line with A Circular Arc,Proc. Symp. Berlin, 1997. [17]E. Tan and O. Baykal, ARI An Interdisciplinary Journal of Physical and Engineering Sciences by Springer-Verlag 51, 126 (1998). [18]O. Baykal, E. Tan, Z. Coşkun, and M. Şahin,Journal of Transportation Engineering 123, 337(1997). [19]D. Kahler, Zeitschrift fur Vermessungwesen 115,154 (1990). [20]H.C. Ives and P. Kissam, Highway Curves (John Wiley & Sons, Inc., 1966). [21]W. Schofield, Engineering Surveying (Butter-worth - Heinemann, Oxford, 2001). [22]O'Flaherty, C.A, Highways (Edward Arnold,London, 1986). [23]C. Esveld, Modern Railway Track (Graphics Department of Thyssen Stahl A.G., Duisburg,1989). [24]D. Kahler, Vermessungstechnik und Raumordnung 51, 116 (1989). [25]A. Kobryn, Vermessungstechnik und Raumordnung 53, 385 (1991). [26]E.K. Morlok, Introduction to Transportation Engineering and Planning (McGraw-Hill, Inc.,1978). [27]W. Gurschke, Der Vermessungsingenieur 43, 157(1992). [28]R.J. Sharpe and R.W. Thorne, Computer Aided Design 14, 79 (1982). [29]T.E. Shoup, Applied Numerical Methods for Microcomputer (Prentice-Hall,Inc, New Jersey,1984). [30]W.H. Press, B.P. Flannery, S.A. Teukolsky, and W.T. Vetterling, Numerical Recipes in C,