Railway Track Geometry - BMEEOUVDT82

3

név	Dr. Liegner Nándor
beosztás	Egyetemi docens
email	liegner.nandor@emk.bme.hu

Út és Vasútépítési Tanszék

angol

2022. szeptember 1.

The aim of the course is for the student to model the theoretical and practical requirements of railway track geometry. Get to know the theory of differential geometry, the natural triedron, their derivatives, movement characteristics, speed, acceleration, changing of acceleration and their derivation in respect of length of arc and time. Be able to determine the details of the transition geometry, apply the transition geometry of cant. Types of transition curves, vertical transition curves. Cant deficiency, cant excess, effect of body tilt coaches on cant deficiency. Familiar with the relevant standards of design of railway track geometry with continuous change and that with abrupt change of curvature. Analise the need to build a transition curve and cant. Familiarize with the theory required to geometrical calculation of the switches and crossings.

Lectures, computational exercises, written and oral communication, use of IT tools and techniques, optional independent assignments, work organization techniques.

Week	Topics of lectures and/or exercise classes
1.	Mathematical basis of differential geometry, natural triedron, derivation of movement characteristics, speed, acceleration, changing of acceleration
2.	Determination of practical formulae of movement characterisitcs
3.	Geometry of curvature transition in case of linear, cosine, sine, fourth power parabolic and Wiener Bogen transition curves, part I.
4.	Geometry of curvature transition in case of linear, cosine, sine, fourth power parabolic and Wiener Bogen transition curves, part II.
5.	Geometry of curvature transition in case of linear, cosine, sine, fourth power parabolic and Wiener Bogen transition curves, part III.
6.	Effect of cant, cant deficiency, cant excess, types of cant transition, part I.
7.	Cant transitions, part II.
8.	Determination of the length of the transition curves.
9.	Review of existing standards of design of geometrical alignment of railway tracks and that of cant.
10.	Assessment of the need of transition curves and / or transition of cant.
11.	Effect of body tilt coaches on cant deficiency and track alignment.
12.	Evaluation of swithces, crossings and track connections on basis of movement characteristics, part I.
13.	Evaluation of swithces, crossings and track connections on basis of movement characteristics, part II.
14.	Consultation

A félév közbeni munkaszüneti napok miatt a program csak tájékoztató jellegű, a pontos időpontokat a tárgy honlapján elérhető "Részletes féléves ütemterv" tartalmazza.

Dr. Jenő Megyeri: Railway Motion Geometry, Technical Publishing House, Budapest, 1986

Inactive courses

The assessment of the learning outcomes set out in point 1 is based on a written exam at the end of the semester.

Teljesítményértékelés neve (típus)	Jele	Értékelt tanulási eredmények
Written exam (summary performance evaluation)	E	A.1-A.8; B.1-B.7

A szorgalmi időszakban tartott értékelések pontos idejét, a házi feladatok ki- és beadási határidejét a "Részletes féléves ütemterv" tartalmazza, mely elérhető a tárgy honlapján.

2022. szeptember 1.

Inactive courses