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Browsing by UP Author "Grabe, Petrus Johannes"
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Grabe, Petrus Johannes; Mpye, Godisang David; Vandoorne, Rick; Broekman, Andre; Pienaar, Daniel; Hawley, Chad; Van Schalkwyk, Hein
(South African Institution of Civil Engineering, 2021-05)
The launch of Engineering 4.0 on 30 November 2020 at the University of
Pretoria’s Hillcrest campus marked the start of an ambitious endeavour to
realise data-driven smart cities and transportation networks.
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Mvelase, G.M.; Anochie-boateng. J.K.; Grabe, P.J. (Hannes)
(South African Institution of Civil Engineering, 2022-12)
The performance of railway track structure is influenced by the ballast shape properties including
roundness, flatness, elongation, sphericity, angularity and surface texture. The challenge is how to
accurately measure ...
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Grabe, Petrus Johannes; Mvelase, Gculisile Mavis; Anochie-Boateng, Joseph K.; Southern African Transport Conference (31st : 2012 : Pretoria, South Africa); Minister of Transport, South Africa
(Document Transformation Technologies, July 2012)
Paper presented at the 31st Annual Southern African Transport Conference 9-12 July 2012 "Getting Southern Africa to Work", CSIR International Convention Centre, Pretoria, South Africa.
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Gaspar, Tiago Alexandre Valentim; Vandoorne, Rick; Jacobsz, Schalk Willem; Heymann, Gerhard; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2021-04)
In recent years, technological advancements
in the field of unsaturated soil mechanics
have helped improve understanding in this
field for both researchers and engineering
practitioners. Gaspar & Jacobsz (2019) ...
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Vorster, Daniel Jacobus; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2010-05)
No abstract available.
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Vorster, P.; Grabe, Petrus Johannes; Jacobsz, Schalk Willem
(Southern African Institute for Industrial Engineering, 2017-09)
With past embankment failures on the heavy haul coal export railway line between Ermelo and
Richards Bay in South Africa, a study was conducted focusing on the modelling of embankments
in a geotechnical centrifuge. This ...
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Du Plooy, R.F.; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2017)
As train speeds and heavy haul axle loads constantly increase due to market demands, so do the
stresses and strains experienced by track structures. This is especially true for track transitions
that generate high dynamic ...
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Grabe, Petrus Johannes; Van Vreden, Pieter H.; Hartman, Anton M.; Southern African Transport Conference (31st : 2012 : Pretoria, South Africa); Minister of Transport, South Africa
(Document Transformation Technologies, July 2012)
Paper presented at the 31st Annual Southern African Transport Conference 9-12 July 2012 "Getting Southern Africa to Work", CSIR International Convention Centre, Pretoria, South Africa.
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Van Schalkwyk, Marco Heinrich; Grabe, Petrus Johannes
(IOP Publishing, 2022-09)
This present paper focuses on the condition monitoring of train wheels utilizing an 3D printed rail pad that is embedded with widely available accelerometers and a strain gauge. This smart rail pad was used on a heavy haul ...
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Vandoorne, Rick; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2015-05)
Maintenance makes up a significant portion of the total life cycle
costs of a railway track. The condition of the formation layers of a
railway track dictates these maintenance costs to a large extent.
The purpose ...
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Mostert, Louis; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2013-05)
With the constantly increasing demand for heavy freight transportation, railways have become an extremely important element in the economic wellbeing of any country, and particularly in a developing country like South ...
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Jideani, Timothy Chimnyere Uchechukwu; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2019-12)
Laboratory tests on ballast give insight into the behaviour and performance of the ballast layer
under passenger and heavy-haul traffic. It is important, however, to ensure that the simulation
of train loads on the ballast ...
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Mpye, Godisang David; Grabe, Petrus Johannes
(Elsevier, 2021-03)
The benefits of increased axle loading in the railway industry are well-appreciated to such an extent that increased axle loading has become a themed topic of interest across all disciplines of railway engineering. However, ...
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Grabe, Petrus Johannes; Jacobs, Dylan
(Sage, 2016-03)
Continuous welded rail (CWR) is a fundamental component of any modern track structure and has several advantages
over former types of rail joining processes. The reduction in maintenance and related costs has become the ...
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Grabe, Petrus Johannes; Clayton, C.R.I.
(American Society of Civil Engineers, 2014-02)
The design of a railway track substructure requires a realistic understanding of the resilient behavior of the underlying track foundation
materials, namely, the subballast and subgrade layers. Currently, the best available ...
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Grabe, Petrus Johannes; Mtshotana, Babalwa F.; Sebati, Martha M.; Thunemann, E. Quintin
(South African Institution of Civil Engineering, 2016-06)
Under-sleeper pads (USPs), typically made from polyurethane, are used by railways in certain
parts of the world to reduce ballast settlement and consequently lengthen the ballast tamping
cycle. The rationale behind this ...
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Fourie, Daniel Johannes; Grabe, Petrus Johannes; Heyns, P.S. (Philippus Stephanus); Frohling, Robert D.
(Sage, 2016)
Tonal squeal noise (i.e. the high amplitude singing of a railway wheel with pure tone components) is
emitted by some trailing inner wagon wheels on heavy haul trains in 1000m radius curves on the iron
ore export line in ...
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Powell, Alex F.; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2017-09)
The research described in this paper is based on an experiment which involved running a
test train through a curve at various speeds, changing the cant of the curve by tamping and
repeating the train runs. The cant was ...
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Fourie, Daniel Johannes; Grabe, Petrus Johannes; Heyns, P.S. (Philippus Stephanus); Fröhling, Robert Desmond
(Elsevier, 2019-04)
Railway wheel squeal is an unresolved noise pandemic facing the railway industry. Wheel squeal results from frictional self-excited vibration occurring in the wheel-rail contact. Solving the problem of squeal requires ...
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Van der Westhuizen, N.J.; Powell, Alex; Grabe, Petrus Johannes
(South African Institution of Civil Engineering, 2013)
With government-owned assets and the sustainability of service delivery a primary objective, the "State of Good Repair" of the Gautrain rapid rail system will in future play a fundamental role in determining its quality ...