Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions

Velichko Gennady

doi:doi:10.11648/j.ajtte.20220705.11

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Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions

Velichko Gennady

Published in American Journal of Traffic and Transportation Engineering (Volume 7, Issue 5)

Received: 21 July 2022 Accepted: 24 August 2022 Published: 8 September 2022

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Abstract

The article describes the principles of optimizing the railway track alignment design on the example of a transition between reverse curves. The purpose of this optimization was to minimize the length of the reverse transitions of railway track under the condition of ensuring the simplicity of their construction and subsequent operation with a high level of safety and driving comfort. The results obtained show that this goal can be achieved by using consistent forms of inverse transitions with non-identical functions of track axis curvature variation and its cross slope. This is confirmed by comparing the achieved level of their quality with the quality of similar transitions designed using “out-swinging” transition curves. The potential of their advantages is limited by some provisions of the current regulations with formal requirements for the design parameters of the alignment of the railway track. In contrast to this, they should contain requirements for integrative indicators of the ergonomic and technical aspects of the quality of the Track + Rail Car system functioning. They should be calculated taking into account the kinematics of the rail car design points located at levels that are relevant for these aspects. For example, at the level of the highest location of the vestibular apparatus of the passenger and/or the center of mass of the rail car. It is also important to take into account the kinematics of the points of interaction of the coupling devices of the rail cars. The examples of optimization of reverse transitions considered in the article indicate a significant influence of the geometric properties of their shapes on the coordinates, curvature and accelerations at these points. From this it follows that in order to implement the progressive requirements for taking into account their kinematics, the following are necessary: a) criteria for the compliance of its indicators with the conditions of safe and comfortable movement; b) requirements for properties of the curvature and cross slope functions that may be suitable for transitions design; c) criteria for harmonizing these properties in order to achieve the best result under given constraints. The issues considered in this article can serve as a basis for a discussion about the feasibility and effectiveness of implementing these measures for consistent forms of reverse transitions with non-identical variant functions of the track curvature and its cross slope.

Published in	American Journal of Traffic and Transportation Engineering (Volume 7, Issue 5)
DOI	10.11648/j.ajtte.20220705.11
Page(s)	74-83
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

System Track+Rail Car, Alignment of Transition, Harmonization of System Properties, Kinematics of Body Design Point

References

[1]	Kufver, B. (2000) Optimisation of Horizontal Alignments for Railways: Procedures Involving Evaluation of Dynamic Vehicle Response. Ph. D. Thesis, Department of Vehicle Engineering, Royal Institute of Technology, Stockholm, Sweden.
[2]	Brustad, T. F., Dalmo, R. (2020) Railway Transition Curves: A Review of the State-of-the-Art and Future Research. Infrastructures 2020, 5, 43; doi: 10.3390/infrastructures505004.
[3]	Zboinski, K. Woznica, P. (2021) Optimum Railway Transition Curves—Method of the Assessment and Results. Energies 2021, 14, 3995. [online cit.: 2022-06-30]. Available from: https://doi.org/10.3390/en14133995
[4]	Shebl, S. (2016) Geometrical analysis of non-linear curvature transition curves of high speed railways. Asian Journal of Current Engineering and Maths. 2016, 5, 52–58. doi: 10.15520/ajcem.2016.vol5.iss4.58. pp.
[5]	BS EN 13803:2017, Railway applications. Track. Track alignment design parameters. Track gauges 1 435 mm and wider.
[6]	Velichko, G. (2020) Quality analysis and evaluation technique of railway track + vehicle system performance at railway transition sections with various shape curves, In Transport Means 2020: Proceedings of the 24th International Scientific Conference, Part II: 573-578. [online cit.: 2022-06-30]. Available from: https://transportmeans.ktu.edu/wp-content/uploads/sites/307/2018/02/Transport-means-A4-II-dalis.pdf
[7]	Velichko, G. (2020) Shape Harmonization of the Railway Track Transition Section & the Kinematics of Vehicle Body Design Point, In Transport Means 2020: Proceedings of the 24th International Scientific Conference, Part II: 910-915. [online cit.: 2022-06-30]. Available from: https://transportmeans.ktu.edu/wp-content/uploads/sites/307/2018/02/Transport-means-A4-II-dalis.pdf
[8]	Velichko, G. (2021) Properties Study of the Harmonized Shape Transition Sections of the Railway Track Curves, In Transport Means 2021: Proceedings of the 25th International Scientific Conference, Part I: 16-21. [online cit.: 2022-06-30]. Available from: https://transportmeans.ktu.edu/wp-content/uploads/sites/307/2018/02/Transport-Means-2021-Part-I.pdf
[9]	Velichko G. (2021) Transition section of railroad track rounding. Description of the invention to the Eurasian patent No. 039267 B1. [online cit.: 2022-06-30] (in Russian). Available from: http://www.eapatis.com/Data/EATXT/eapo2021/PDF/039267.pdf
[10]	BS EN 13848-5:2008, Railway applications — Track — Track geometry quality — Part 5: Geometric quality levels — Plain line.
[11]	Marqueteeken, A., Van Leuven, A., & Kopf, Fritz. (2008). Report of project “Urban Rail Transport (project N° FP6-31312), Cost effective track maintenance, renewal & refurbishment methods (Subproject 2), Preventive maintenance of embedded tram tracks. Rail wear in curves and special trackwork for trams (Work Package 2.3). 1-44. https://www.yumpu.com/en/document/view/6772107/deliverable-28-urban-track
[12]	Hasslinger, H. (2003) Track with a levelling curve and force-minimal superelevation ramp, EP 1 523 597 B1, [online cit.: 2022-06-30]. Available from: https://patents.google.com/patent/EP1523597B1/en?inventor=Herbert+L.+Hasslinger&oq=Herbert+L.+Hasslinger
[13]	Klauder, Louis, T., Jr., (2001) Railroad curve transition spiral design method based on control of vehicle banking motion. docId WO/2001/098938 [online cit.: 2022-06-30]. Available from: https://patentscope.wipo.int/search/ru/detail.jsf?docId=WO2001098938
[14]	Ir. David J. Vermeij (200) Design of a high speed track. Heron, Vol 45, № 1 (200) ISSN 0046-7316, [online cit.: 2022-06-30]. Available from: http://heronjournal.nl/45-1/3.pdf
[15]	Zsolt Barna, Z., Kisgyörgy, L., (2015) Analysis of Hyperbolic Transition Curve. Geometry, Periodica Polytechnica Civil Engineering, 59 (2), pp. 173–178, 2015. DOI: 10.3311/PPci.7834.

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APA Style

Velichko Gennady. (2022). Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. American Journal of Traffic and Transportation Engineering, 7(5), 74-83. https://doi.org/10.11648/j.ajtte.20220705.11

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ACS Style

Velichko Gennady. Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. Am. J. Traffic Transp. Eng. 2022, 7(5), 74-83. doi: 10.11648/j.ajtte.20220705.11

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AMA Style

Velichko Gennady. Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. Am J Traffic Transp Eng. 2022;7(5):74-83. doi: 10.11648/j.ajtte.20220705.11

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@article{10.11648/j.ajtte.20220705.11,
  author = {Velichko Gennady},
  title = {Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {7},
  number = {5},
  pages = {74-83},
  doi = {10.11648/j.ajtte.20220705.11},
  url = {https://doi.org/10.11648/j.ajtte.20220705.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20220705.11},
  abstract = {The article describes the principles of optimizing the railway track alignment design on the example of a transition between reverse curves. The purpose of this optimization was to minimize the length of the reverse transitions of railway track under the condition of ensuring the simplicity of their construction and subsequent operation with a high level of safety and driving comfort. The results obtained show that this goal can be achieved by using consistent forms of inverse transitions with non-identical functions of track axis curvature variation and its cross slope. This is confirmed by comparing the achieved level of their quality with the quality of similar transitions designed using “out-swinging” transition curves. The potential of their advantages is limited by some provisions of the current regulations with formal requirements for the design parameters of the alignment of the railway track. In contrast to this, they should contain requirements for integrative indicators of the ergonomic and technical aspects of the quality of the Track + Rail Car system functioning. They should be calculated taking into account the kinematics of the rail car design points located at levels that are relevant for these aspects. For example, at the level of the highest location of the vestibular apparatus of the passenger and/or the center of mass of the rail car. It is also important to take into account the kinematics of the points of interaction of the coupling devices of the rail cars. The examples of optimization of reverse transitions considered in the article indicate a significant influence of the geometric properties of their shapes on the coordinates, curvature and accelerations at these points. From this it follows that in order to implement the progressive requirements for taking into account their kinematics, the following are necessary: a) criteria for the compliance of its indicators with the conditions of safe and comfortable movement; b) requirements for properties of the curvature and cross slope functions that may be suitable for transitions design; c) criteria for harmonizing these properties in order to achieve the best result under given constraints. The issues considered in this article can serve as a basis for a discussion about the feasibility and effectiveness of implementing these measures for consistent forms of reverse transitions with non-identical variant functions of the track curvature and its cross slope.},
 year = {2022}
}

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TY  - JOUR
T1  - Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions
AU  - Velichko Gennady
Y1  - 2022/09/08
PY  - 2022
N1  - https://doi.org/10.11648/j.ajtte.20220705.11
DO  - 10.11648/j.ajtte.20220705.11
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 74
EP  - 83
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20220705.11
AB  - The article describes the principles of optimizing the railway track alignment design on the example of a transition between reverse curves. The purpose of this optimization was to minimize the length of the reverse transitions of railway track under the condition of ensuring the simplicity of their construction and subsequent operation with a high level of safety and driving comfort. The results obtained show that this goal can be achieved by using consistent forms of inverse transitions with non-identical functions of track axis curvature variation and its cross slope. This is confirmed by comparing the achieved level of their quality with the quality of similar transitions designed using “out-swinging” transition curves. The potential of their advantages is limited by some provisions of the current regulations with formal requirements for the design parameters of the alignment of the railway track. In contrast to this, they should contain requirements for integrative indicators of the ergonomic and technical aspects of the quality of the Track + Rail Car system functioning. They should be calculated taking into account the kinematics of the rail car design points located at levels that are relevant for these aspects. For example, at the level of the highest location of the vestibular apparatus of the passenger and/or the center of mass of the rail car. It is also important to take into account the kinematics of the points of interaction of the coupling devices of the rail cars. The examples of optimization of reverse transitions considered in the article indicate a significant influence of the geometric properties of their shapes on the coordinates, curvature and accelerations at these points. From this it follows that in order to implement the progressive requirements for taking into account their kinematics, the following are necessary: a) criteria for the compliance of its indicators with the conditions of safe and comfortable movement; b) requirements for properties of the curvature and cross slope functions that may be suitable for transitions design; c) criteria for harmonizing these properties in order to achieve the best result under given constraints. The issues considered in this article can serve as a basis for a discussion about the feasibility and effectiveness of implementing these measures for consistent forms of reverse transitions with non-identical variant functions of the track curvature and its cross slope.
VL  - 7
IS  - 5
ER  -

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Author Information

Velichko Gennady

Retired From the Joint Venture “CREDO-DIALOGUE” - Limited Liability Company, Minsk, Belarus

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Velichko Gennady. (2022). Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. American Journal of Traffic and Transportation Engineering, 7(5), 74-83. https://doi.org/10.11648/j.ajtte.20220705.11

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ACS Style

Velichko Gennady. Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. Am. J. Traffic Transp. Eng. 2022, 7(5), 74-83. doi: 10.11648/j.ajtte.20220705.11

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AMA Style

Velichko Gennady. Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions. Am J Traffic Transp Eng. 2022;7(5):74-83. doi: 10.11648/j.ajtte.20220705.11

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@article{10.11648/j.ajtte.20220705.11,
  author = {Velichko Gennady},
  title = {Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {7},
  number = {5},
  pages = {74-83},
  doi = {10.11648/j.ajtte.20220705.11},
  url = {https://doi.org/10.11648/j.ajtte.20220705.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20220705.11},
  abstract = {The article describes the principles of optimizing the railway track alignment design on the example of a transition between reverse curves. The purpose of this optimization was to minimize the length of the reverse transitions of railway track under the condition of ensuring the simplicity of their construction and subsequent operation with a high level of safety and driving comfort. The results obtained show that this goal can be achieved by using consistent forms of inverse transitions with non-identical functions of track axis curvature variation and its cross slope. This is confirmed by comparing the achieved level of their quality with the quality of similar transitions designed using “out-swinging” transition curves. The potential of their advantages is limited by some provisions of the current regulations with formal requirements for the design parameters of the alignment of the railway track. In contrast to this, they should contain requirements for integrative indicators of the ergonomic and technical aspects of the quality of the Track + Rail Car system functioning. They should be calculated taking into account the kinematics of the rail car design points located at levels that are relevant for these aspects. For example, at the level of the highest location of the vestibular apparatus of the passenger and/or the center of mass of the rail car. It is also important to take into account the kinematics of the points of interaction of the coupling devices of the rail cars. The examples of optimization of reverse transitions considered in the article indicate a significant influence of the geometric properties of their shapes on the coordinates, curvature and accelerations at these points. From this it follows that in order to implement the progressive requirements for taking into account their kinematics, the following are necessary: a) criteria for the compliance of its indicators with the conditions of safe and comfortable movement; b) requirements for properties of the curvature and cross slope functions that may be suitable for transitions design; c) criteria for harmonizing these properties in order to achieve the best result under given constraints. The issues considered in this article can serve as a basis for a discussion about the feasibility and effectiveness of implementing these measures for consistent forms of reverse transitions with non-identical variant functions of the track curvature and its cross slope.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Principles for Optimizing Geometric and Functional Properties of Railway Track Reverse Transitions
AU  - Velichko Gennady
Y1  - 2022/09/08
PY  - 2022
N1  - https://doi.org/10.11648/j.ajtte.20220705.11
DO  - 10.11648/j.ajtte.20220705.11
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 74
EP  - 83
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20220705.11
AB  - The article describes the principles of optimizing the railway track alignment design on the example of a transition between reverse curves. The purpose of this optimization was to minimize the length of the reverse transitions of railway track under the condition of ensuring the simplicity of their construction and subsequent operation with a high level of safety and driving comfort. The results obtained show that this goal can be achieved by using consistent forms of inverse transitions with non-identical functions of track axis curvature variation and its cross slope. This is confirmed by comparing the achieved level of their quality with the quality of similar transitions designed using “out-swinging” transition curves. The potential of their advantages is limited by some provisions of the current regulations with formal requirements for the design parameters of the alignment of the railway track. In contrast to this, they should contain requirements for integrative indicators of the ergonomic and technical aspects of the quality of the Track + Rail Car system functioning. They should be calculated taking into account the kinematics of the rail car design points located at levels that are relevant for these aspects. For example, at the level of the highest location of the vestibular apparatus of the passenger and/or the center of mass of the rail car. It is also important to take into account the kinematics of the points of interaction of the coupling devices of the rail cars. The examples of optimization of reverse transitions considered in the article indicate a significant influence of the geometric properties of their shapes on the coordinates, curvature and accelerations at these points. From this it follows that in order to implement the progressive requirements for taking into account their kinematics, the following are necessary: a) criteria for the compliance of its indicators with the conditions of safe and comfortable movement; b) requirements for properties of the curvature and cross slope functions that may be suitable for transitions design; c) criteria for harmonizing these properties in order to achieve the best result under given constraints. The issues considered in this article can serve as a basis for a discussion about the feasibility and effectiveness of implementing these measures for consistent forms of reverse transitions with non-identical variant functions of the track curvature and its cross slope.
VL  - 7
IS  - 5
ER  -

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