Prospects in elongation of railway transition curves

Chrostowski, Piotr; Koc, Władysław; Palikowska, Katarzyna

doi:10.1680/jtran.17.00097

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…The article [12] describes the analysis of the results of transitional curves continuation, depending on the track control and modernization of railways. The analysis is based on numerical calculations of a wide range of parameters describing a typical geometric scheme of the railway with transition curves.…”

Section: Title Equationmentioning

confidence: 99%

Determination of the type and the length for the transition curves on the directions of high-speed train operation

Kurhan

Hmelevska

2022

Acta Tech. Jaurinensis

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In many countries around the world, a cubic parabola is used as transition curves in a simplified form. Today, the properties of many mathematical curves are well studied, which can be used as transition curves. The object of research is the process of restructuring transition curves when organizing high-speed trains operation. The use of modern means of mathematical modelling allows to add a number of dynamic characteristics for evaluation parameters of motion in the curved sections of the tracks. Thus, with an increase in speed for transition curves, both the values of unbalanced acceleration and its change in time, and also the velocity attenuation of oscillations of rolling stock when moving from a transition curve to a circular curve or to a direct section. On the basis of the conducted research, it has been found that when increasing the speed of the vehicle movement in the range from 120 to 200 km/h, the length of the stabilization section increases at the output of the curvature by an average of 20 m for every 40 km/h. The analysis showed that with correctly set parameters of transition curves, which correspond to the maximum speed of movement and radius of a circular curve, the strength and reliability of the bearing elements in the structure of the permanent way and the travel comfort are fully ensured.

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Section: Title Equationmentioning

confidence: 99%

Determination of the type and the length for the transition curves on the directions of high-speed train operation

Kurhan

Hmelevska

2022

Acta Tech. Jaurinensis

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“…The examples of such systems are railway lines of agglomeration importance and mainly tramway lines, which in conditions of urban development require the use of short geometric sections [ 27 , 28 ]. In such situations, the exact reconstruction of the route’s polygon is a prerequisite for the proper reconstruction of the system of non-linear sections by using analytical methods of design [ 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Possibility of Identifying a Complex Polygonal Tram Track Layout Using Multiple Satellite Measurements

Wilk

Specht

Koc

et al. 2020

Sensors

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We present the main assumptions about the algorithmization of the analysis of measurement data recorded in mobile satellite measurements. The research team from the Gdańsk University of Technology and the Maritime University in Gdynia, as part of a research project conducted in cooperation with PKP PLK (Polish Railway Infrastructure Manager), developed algorithms supporting the identification and assessment of track axis layout. This article presents selected issues concerning the identification of a tramway line’s axis system. For this purpose, the supporting algorithm was developed and measurement data recorded using Global Navigation Satellite System (GNSS) techniques was evaluated and analyzed. The discussed algorithm identifies main track directions from multi-device data and repeated position recordings. In order to observe the influence of crucial factors, the investigated route was carefully selected. The chosen tramway track was characterized by its location in various field conditions and a diversified and complex geometric layout. The analysis of the obtained results was focused on the assessment of the signal’s dispersion and repeatability using residuals in relation to the estimated track’s direction. The presented methodology is intended to support railway infrastructure management processes, mainly in planning and maintenance through an efficient inventory of the infrastructure in service.

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Assessment of Dynamic Properties and Scope of Implementing a New Track Transition Curve

Koc

Palikowska

2021

J. Surv. Eng.

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Prospects in elongation of railway transition curves

Cited by 7 publications

References 8 publications

Determination of the type and the length for the transition curves on the directions of high-speed train operation

Determination of the type and the length for the transition curves on the directions of high-speed train operation

Evaluation of the Possibility of Identifying a Complex Polygonal Tram Track Layout Using Multiple Satellite Measurements

Assessment of Dynamic Properties and Scope of Implementing a New Track Transition Curve

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