Course detail

Railway Structures I

FAST-BN01Acad. year: 2013/2014

Railway track geometry components and alignment, rail track gauge, cant and twist, horizontal and vertical track alignment, track alignment design parameters for operation of tilting body trains
Geodetic surveying of track layout, track layout optimization problems, geodetic layout and fixing of rail track alignment.
Clearances. The centre line distances in open track and in railway stations. Routing of railway lines, railway track design.
Subdivision and construction of rail substructure and its construction layers – basic terms. Ballast bed and formation – bearing capacity, stress distribution, types and design of railway substructure, construction layers.

Language of instruction

Czech

Number of ECTS credits

4

Mode of study

Not applicable.

Department

Institute of Railway Structures and Constructions (ZEL)

Learning outcomes of the course unit

A student acquires skills in railway track geometry components and alignment, i.e. limits of particular track geometry parameters, design of track horizontal and vertical alignment and design of track geometry parameters for tilting train units. The student is introduced to the assessment of deviations of track geometry parameters during construction works and acceptance process or operation and maintenance. The student acquires skills in track spatial arrangements – clearances and track axes distances. The student is introduced to track design generally and subdivision and construction of rail substructure and its arrangement.

Prerequisites

Geodesy in Civil Engineering, coordinate systems, geodetic computations, measurement of directions and angles, distance measurements, height systems, height measurements, setting out of buildings, roads and railways, maps
Soil mechanics, classification of soils for engineering purposes, shear strength of soils, stresses in soils.
Strength and elasticity of materials, basic principles of structural mechanics.
Basic terms, division of railway structures. Track alignment design parameters and its spatial position – basic terms.

Co-requisites

Elementary theoretic knowledges of physic: waves and acoustics, thermics, thermal conduction. Basic laws of mechanics -the principle of the virtual work and the principle of minimum of potential energy.

Planned learning activities and teaching methods

Teaching is kept in a form lectures, seminars and individual consultations. The students' work is completed by specified individual work, work assigned for individual study with the active participation of students and students' work with LMS Moodle. Excursions to the construction sites or to manufacturers are organized.

Assesment methods and criteria linked to learning outcomes

The course is completed with a credit, whose acquisition is conditional on attendance, submitting calculations focused on the design of track geometry parameters and delivery of two projects - design of a section of double track line and study of railway line, successful completion of a written test.

Course curriculum

1. Railway track geometry components and track alignment design parameters within operation speed 160 km/h. Rail track gauge and gauge widening.
2. Cant, distance-related cant gradient, time-related cant gradient, cant deficiency.
3. Horizontal track alignment. Transition curves. Nonlinear transition curves.
4. Compound curves. Transition curves connecting two circular curves. Reverse curves.
5. Vertical track alignment, gradients, vertical curves.
6. Track alignment design parameters for operation of tilting body trains.
7. Geodetic surveying of track layout, track layout optimization problems. Geodetic layouts and fixing of rail track alignment.
8. Clearances. The centre line distances in open track and in railway stations.
9. Routing of railway lines, railway track design.
10. Subdivision and construction of rail substructure and its construction layers – basic terms.
11. Ballast bed and formation – bearing capacity, stress distribution, types and design of railway substructure, construction layers.

Work placements

Not applicable.

Aims

The objective of the subject is to introduce students to the problems of railway track geometry components and alignment, railway track design and subdivision and construction of rail substructure and its construction layers and to practise acquires knowledge and skills.

Specification of controlled education, way of implementation and compensation for absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Recommended optional programme components

A student can attend conferences, workshops or excursions focused on railway structures.

Prerequisites and corequisites

Not applicable.

Basic literature

Coenraad Esveld: Modern Railway Track. MRT-Productions, 2001. (EN)
Jirsák, Z.: Príručka na projektovanie železničných tratí a staníc. Alfa, Bratislava, 1979. (CS)
Klimeš, F.: Železniční stavitelství I. SNTL Praha, 1978. (CS)
kol.: British Railway Track. The Permanent Way Institution, 1993. (EN)
Plášek, O.: Železniční stavby. Návody do cvičení. CERM, 2002. (CS)
Plášek, Zvěřina, Svoboda, Mockovčiak: Železniční stavby. Železniční svršek a spodek. CERM, 2004. (CS)
Tyc, Kubát, Dostál, Havíř: Železniční stavby. Dh Press Bratislava, 1993. (CS)

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme B-K-C-SI Bachelor's

    branch K , 3 year of study, summer semester, compulsory

  • Programme B-P-C-SI Bachelor's

    branch K , 3 year of study, summer semester, compulsory

  • Programme B-P-E-SI Bachelor's

    branch K , 3 year of study, summer semester, compulsory

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

Syllabus

1. Railway track geometry components and track alignment design parameters within operation speed 160 km/h. Rail track gauge and gauge widening.
2. Cant, distance-related cant gradient, time-related cant gradient, cant deficiency.
3. Horizontal track alignment. Transition curves. Nonlinear transition curves.
4. Compound curves. Transition curves connecting two circular curves. Reverse curves.
5. Vertical track alignment, gradients, vertical curves.
6. Track alignment design parameters for operation of tilting body trains.
7. Geodetic surveying of track layout, track layout optimization problems.
8. Geodetic layouts and fixing of rail track alignment.
9. Clearances. The centre line distances in open track and in railway stations.
10. Routing of railway lines, railway track design.
11. Subdivision and construction of rail substructure and its construction layers – basic terms.

Exercise

26 hod., compulsory

Teacher / Lecturer

Syllabus

1. Rail track gauge and gauge widening
2. Cant, distance-related cant gradient, time-related cant gradient, cant deficiency. Specifying of design of a section double track line.
3. Calculations of track layout of a circle curve with transition curves
4. Compound curves. Transition curves connecting two circular curves. Reverse curves.
5. Vertical track alignment
6. Drawings elaboration
7. Submitting of design of section of double track line. Specifying of study of railway line.
8. Written test
9. Evaluation of track design variants.
10. Drawings and report elaboration
11. Submitting of study of section of railway line, credit.