|Unit Name||TRACK GEOMETRY AND TRAIN INTERACTION|
|Unit Duration||12 Weeks|
Master of Engineering (Civil: Railway Infrastructure)
Duration: 2 years
|Unit Creator / Reviewer||John Powell|
Masters total course credit points = 48
(3 credits x 12 (units) + 12 credits (Thesis))
|Mode of Delivery||Online or on-campus.|
10 hours per week:
Lecture - 1 hour
Tutorial Lecture - 1 hours
Assessments / Practical / Lab - 1 hour (where applicable)Personal Study recommended - 7 hours (guided and unguided)
Unit Description and General Aims
The sole purpose of track is to support the safe and speedy passage of trains carrying passengers, minerals, freight, primary produce, and so on. Although tracks can deteriorate due to environmental factors, the primary source of deterioration is the passage of trains.
Operators want trains to carry larger and larger payloads at ever higher speeds, which induce increasingly large static and dynamic forces on the track. These forces deteriorate the track, this then leads to a rougher ride for the trains, causing even higher dynamic forces down into the track and up into the vehicle.
This Unit is intended to provide students with an understanding of the interaction between track and trains. It builds on and further develops student knowledge of track elements and structure, as discussed in the earlier Units of this Master’s program, by providing an explanation of vehicle design and discussing incidents such as train derailments.
On successful completion of this Unit, students are expected to be able to:
- Evaluate influencing factors contributing to track-train interaction consequences.
Bloom’s Level 5
- Critically judge and solve problems related to train-track interaction issues.
Bloom’s Level 5
- Design a conceptual track alignment for different traffic tasks.
Bloom’s Level 6
- Validate and test relevant information to determine appropriate maintenance and rectification strategies for track and vehicles resulting from their interaction.
Bloom’s Level 5
- Recommend track geometry standards required for different traffic tasks.
Bloom’s Level 5
(e.g. Assignment - 2000 word essay (specify topic)Examination (specify length and format))
|When assessed (eg Week 5)||Weighting (% of total unit marks)||Learning Outcomes Assessed|
Word length: 1500
Topic: Specify track geometry standards and describe the basis of their selection for a new railway of a type relevant to the student.
Type: Case Study, Group Discussion and Evaluation
Word length: N/A
Topic: The student is to contribute progressively to an unfolding discussion amongst their peers in this Unit on solving a track-train interaction problem. They are required to role-play a member of an interaction committee formed to solve an interface issue.
|Week 7||25%||1, 2, 4|
Type: Report and Presentation (Final Project)
Word length: 2000
Topic: Prepare a comprehensive engineering report on a case study related to the introduction of a new train operator on an existing railway network with the primary focus being on the track-train interface issues and how they can be managed. The report will require careful referencing and be suitable in its format, quality of analysis, and conclusions for decision-making by senior engineers.
Embedded practical component: Students are to research and interact with software simulations, that demonstrate track dynamics and train-track interaction, to be referenced and/or demonstrated in their final report (acceptable examples include Adams/rail, NUCARS, Vampire, LUSAS, MATLAB, Solidworks).
|Week 12||50%||1, 2, 3, 4, 5|
|Continuous||5%||1, 2, 3, 4, 5|
Prescribed and Recommended readings
Study Notes by Rail Innovation Australia (RIA) [existing materials] and other information and materials on their website: http://www.railinnovation.com.au/
A number of books, peer-reviewed journals, and websites as advised below:
- Esveld, C., Modern Railway Track 2nd ed. MRT Productions, Netherlands. 2011, ISBN 90-800324-3-3. . Available at http://www.esveld.com/MRT.html and https://www.amazon.co.uk/Modern-Railway-Coenraad-Esveld/dp/9080032433.
- ROA blue books (Vol 1 and Vol 2 – correct referencing of this publication to be determined)
- Relevant Australia Standards
- Other materials to be advised during the lectures
One topic is delivered per contact week, with the exception of part-time 24-week units, where one topic is delivered every two weeks.
Topic 1 and 2
- Track geometry for mainline and yards
- Horizontal alignment elements
- Vehicles on straights and horizontal curves
- Transition curves
- Vertical alignment elements
- Trains on grades and vertical curves
- Grade compensation and ruling grades
Topic 3 and 4
Measuring and Managing Track Geometry
- Alignment design vs. field geometry
- Track geometry degradation
- Principles of track geometry measurement
- Geometry measurement methods
- Track geometry and ride/ derailment conditions
- Track geometry standards
- Treatment of track geometry defects and condition
- Track geometry maintenance management
Topic 5 and 6
- Basic vehicle design
- Integration process and Estimation
- Substitution Method
- Reimann Sums
- The Fundamental Theorem of Calculus
- Definite Integrals
- Standard Integrals
- The track structure
- The applied static loads
- The applied dynamic loads
Vehicle – Track Interaction
- Behaviour in straight (tangent) track
- Behaviour in curved track
- Wheel unloading and wheel climb
Topic 10 and 11
Some Consequences of Track – Train Interaction
- Rail and wheel wear
- Rail and wheel defects
Project and Unit Review
In the final week students will have an opportunity to review the contents covered so far. Opportunity will be provided for a review of student work and to clarify any outstanding issues. Instructors/facilitators may choose to cover a specialised topic if applicable to that cohort.
Additional resources or files: N/A
- Hardware: N/A