Course Details
Railway Constructions I
Academic Year 2023/24
NNA009 course is part of 1 study plan
NPC-SIK Winter Semester 1st year
Wheel-rail interface, wheelset and track dimensions, equivalent conicity, lateral movement of wheelset on the straight track
Wheel-rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances
The vehicle in a curve, Vogel theory, Heumann theory, forces on the wheelset, derailment condition
Track loads, vertical, lateral and longitudinal forces, influence of higher operation speed
Static track design, rail stresses, sleeper stresses, vertical stresses on ballast bed and formation, computer models
The rail, manufacturing, welding, testing and acceptance, rail failures, rail grinding
Theory of continuous welded rail. Longitudinal forces, the stability of continuous welded rail.
Modern railway track structures.
Dynamic track design. Principles, the simple dynamic model of track wheel interaction. Dynamic models of the track, critical train velocity, the dynamic response on vehicle, wheelset, transfer of vibrations between wheel and rail.
Switches and crossing, types, turnout parts. The geometry of sets of switches and common crossings. Manufactured types and notation.
The single turnout, stock rail, switch rail (blade), common and crossings, sleepers, fastenings systems. Operating and locking systems. Crossings and slip points.
Turnout collections. Crossovers, junctions, sets of turnouts. Turnouts in curves.
High-speed turnouts, development of new turnouts structures.
Wheel-rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances
The vehicle in a curve, Vogel theory, Heumann theory, forces on the wheelset, derailment condition
Track loads, vertical, lateral and longitudinal forces, influence of higher operation speed
Static track design, rail stresses, sleeper stresses, vertical stresses on ballast bed and formation, computer models
The rail, manufacturing, welding, testing and acceptance, rail failures, rail grinding
Theory of continuous welded rail. Longitudinal forces, the stability of continuous welded rail.
Modern railway track structures.
Dynamic track design. Principles, the simple dynamic model of track wheel interaction. Dynamic models of the track, critical train velocity, the dynamic response on vehicle, wheelset, transfer of vibrations between wheel and rail.
Switches and crossing, types, turnout parts. The geometry of sets of switches and common crossings. Manufactured types and notation.
The single turnout, stock rail, switch rail (blade), common and crossings, sleepers, fastenings systems. Operating and locking systems. Crossings and slip points.
Turnout collections. Crossovers, junctions, sets of turnouts. Turnouts in curves.
High-speed turnouts, development of new turnouts structures.
Course Guarantor
Institute
Objective
The objective of the subject is to introduce students to the problems of interaction between railway vehicle and track, static track design, switches, crossings and turnouts and to practise acquires knowledge and skills.
Knowledge
A student acquires skills in interaction between railway vehicle and track, static track design, switches, crossings and turnouts.
Syllabus
1. Wheel-rail interface, wheelset and track dimensions, equivalent conicity, lateral movement of wheelset on the straight track.
2. Wheel-rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances. Vogel theory, Heumann theory, forces on wheelset, derailment condition.
3. Static track design, rail stresses, sleeper stresses.
4. Theory of continuous welded rail. Longitudinal forces, stability of continuous welded rail.
5. Permanent way on bridges. Continuous welded rail on bridges.
6. The single turnout, turnout collections
7. Design of switches and crossings, design of turnouts in a curve
8. Simple turnout connections. Single crossover in curve.
9. Structural components of switches and crossings. stock rail, switch rail (blade), common and crossings, bearers, locking device, fastenings systems.
10. Sets of turnouts.
11. Vertical stresses on ballast bed and formation and its deformation resistance. Climatic conditions.
12. Dynamic track design. Principles, the simple dynamic model of track wheel interaction. Dynamic models of track, critical train velocity, dynamic response on vehicle, wheelset, transfer of vibrations between wheel and rail.
13. The rail, assessment, defects and failures , grinding.
2. Wheel-rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances. Vogel theory, Heumann theory, forces on wheelset, derailment condition.
3. Static track design, rail stresses, sleeper stresses.
4. Theory of continuous welded rail. Longitudinal forces, stability of continuous welded rail.
5. Permanent way on bridges. Continuous welded rail on bridges.
6. The single turnout, turnout collections
7. Design of switches and crossings, design of turnouts in a curve
8. Simple turnout connections. Single crossover in curve.
9. Structural components of switches and crossings. stock rail, switch rail (blade), common and crossings, bearers, locking device, fastenings systems.
10. Sets of turnouts.
11. Vertical stresses on ballast bed and formation and its deformation resistance. Climatic conditions.
12. Dynamic track design. Principles, the simple dynamic model of track wheel interaction. Dynamic models of track, critical train velocity, dynamic response on vehicle, wheelset, transfer of vibrations between wheel and rail.
13. The rail, assessment, defects and failures , grinding.
Prerequisites
Track alignment design parameters and its spatial positions, railway track design.
Railway substructure, subdivision and construction of rail substructure and its construction layers, construction and shape of the earth formation
Railway superstructure and modern railway structure design.
Railway substructure, subdivision and construction of rail substructure and its construction layers, construction and shape of the earth formation
Railway superstructure and modern railway structure design.
Language of instruction
Czech
Credits
4 credits
Semester
winter
Forms and criteria of assessment
course-unit credit and examination
Specification of controlled instruction, the form of instruction, and the form of compensation of the absences
Extent and forms are specified by guarantor’s regulation updated for every academic year.
Offered to foreign students
Not to offer
Course on BUT site
Lecture
13 weeks, 2 hours/week, elective
Syllabus
1. Wheel-rail interface, wheelset and track dimensions, equivalent conicity, lateral movement of wheelset on the straight track.
2. Wheel-rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances. Vogel theory, Heumann theory, forces on wheelset, derailment condition.
3. Static track design, rail stresses, sleeper stresses.
4. Theory of continuous welded rail. Longitudinal forces, stability of continuous welded rail.
5. Permanent way on bridges. Continuous welded rail on bridges.
6. The single turnout, turnout collections
7. Design of switches and crossings, design of turnouts in a curve
8. Simple turnout connections. Single crossover in curve.
9. Structural components of switches and crossings. stock rail, switch rail (blade), common and crossings, bearers, locking device, fastenings systems.
10. Sets of turnouts.
11. Vertical stresses on ballast bed and formation and its deformation resistance. Climatic conditions.
12. Dynamic track design. Principles, the simple dynamic model of track wheel interaction. Dynamic models of track, critical train velocity, dynamic response on vehicle, wheelset, transfer of vibrations between wheel and rail.
13. The rail, assessment, defects and failures , grinding.
Exercise
13 weeks, 1 hours/week, compulsory
Syllabus
1. Wheel-rail interface, wheelset and track dimensions, equivalent conicity, lateral movement of wheelset on the straight track.
2. Vogel theory, Heumann theory, forces on wheelset
3. Static track design, calculation of rail stresses and deflection
4. Calculation of longitudinal forces, stability of continuous welded rail
5. Permanent way on bridges. Continuous welded rail on bridges.
6. Layout of single turnout
7. Single turnouts in curve
8. Single crossover in curve
9. Simple turnout connections
10. Sets of turnouts
11. Consultations
12. The design drawings delivery
13. Credit.