Some Experience And Preliminary Conclusions
From The Experimental Monitoring Of The
Temperature Regime Of A Subgrade Structure
Author(s)
L. Ižvolt, P. Dobeš & M. Pitoňák
Abstract
In addition to other topics on railway engineering, the Department of Railway
Engineering and Track Management is permanently paying attention to the issue
of the non-traffic load of railway track (track load of climatic impacts) for the
purpose of verification and possible adjustments of the existing methodology of
the railway subgrade structure design to the adverse effects of frost used on the
Slovak railways. For this purpose, the model of a railway track structure was
built – Experimental Stand DRETM I – with an inbuilt thermometer in its
individual structural layers and their interfaces, connected to recording
equipment. This paper presents the characterized results of individual winter
periods observed since 2003, its partial analysis is made and it states some
fundamental knowledge necessary to be taken into account in the design and
assessment of the railway track structure to the adverse effects of frost. Based on
the evaluation of experimental measurements and knowledge obtained so far, a
draft design nomogram for the design of the structure of a railway track on a
non-traffic load was made, which greatly simplifies this whole process of design
and assessment, compared with the current methodology in TNŽ 73 6312 \“The
design of structural layers of subgrade structure”.
Keywords: railway track, design, temperature regime, frost depth, frost index.
Keywords
railway track, design, temperature regime, frost depth, frost index.
Related Book
Other papers in this volume
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