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UoW researcher Dr Alex Remennikov & Rail CRC student Sakdirat
Kaewunruen test concrete sleepers at UoW.
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This project – a collaborative effort between Queensland
University of Technology and the University of Wollongong –
aims to help track owners make more cost-effective use of their
track asset through improved knowledge of track behaviour under
static and dynamic loading and in particular, through more
realistic process of analysis and design of concrete sleepers.
The knowledge gained through this research could enable the passage
of heavier trains on existing concrete sleepers (e.g. axle loads
could increase from 22 to 24 tonnes). Alternatively, it may be
possible to change the design of the sleeper, within the limit
state, and reduce the cost. The research is also working to develop
a computer-based model – D-Track – for track design.
Taking into account the risks involved in delivering the
technology, the estimated value to the rail industry is $7.4
million, according to STEM Partnerships (2006).
Progress to date:
- Test method for dynamics of concrete sleepers developed and applied
to sleepers – free and in ballast.
- International benchmarking study of track dynamics models
completed.
- Development at UoW of experimental techniques to determine
characteristics of rail track components (sleepers, ballast, pads)
completed.
- Practical methods for determination of dynamic properties of
railway track components in laboratory and field testing completed
by UoW researchers and now available.
- Completion of upgrade to the D-Track track dynamics computer model,
with some work underway to commercialise the package.
Future Outcomes:
- A thoroughly validated and user-friendly model of track dynamics
for use by industry – D-Track available in late 2006.
- A rigorous limit state method for design and analysis of concrete
sleepers, bringing the relevant code AS1085.14 into consistency
with other relevant Standards Australia codes.
- Reliable values of dynamic properties for railway track components.
- Validated research methodology for complex investigations of
possible changes in track (e.g. new form of sleeper or other
component).
- Delivery of the D-Track software to final users through licensing.
Project Leaders: Dr Martin Murray (Queensland University of
Technology) and Dr Alex Remennikov (University of Wollongong)
Project Manager: Mr Peter Hermann (Queensland Rail)
