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CONFERENCE PROCEEDINGS
7th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2019 , 2019.y., pp. 99-124


WHEEL/RAIL DYNAMIC FORCES AS THE GENERATOR OF TRACK DETERIORATION AND THE FOCAL POINT FOR ITS MAINTENANCE
 
DOI: 10.14415/konferencijaGFS2019.009
UDC: 625.143:532.61.042
CC-BY-SA 4.0 license
Author : Jovanović, Stanislav; Tešić, Predrag
 
 Summary:
 Despite the fact that Maintenance & Renewal (M&R) of infrastructure represents the largest constitutive part of infrastructure life cycle costs, most governments and railways in the West Balkans (WB) region, already for decades, most attention directs towards infrastructure (re)construction, while M&R is largely neglected. One of the key reasons is the fact that infrastructure maintenance represents a very long process, lasting many decades, which is too long (and thus also uninteresting) from the viewpoint of the key stakeholders, be they (at) relevant banks which finance infrastructure activities, or railways which conduct them, or politicians that decide upon them. For that reason, these stakeholders find (re)construction projects much more attractive, as they are shorter (in time), yet financially intensive, which makes them possible to be “wrapped up” within their “terms”, i.e. the time-frame corresponding to the stakeholders‟ holding of respective functions/positions. However, all these activities, including M&R, are eventually paid by all the citizens, who also utilize that infrastructure, and who thus should find it in their best inte rest that this infrastructure is kept in the optimal condition, i.e. that it is properly managed, or in other words – maintained. On the other hand, to manage M&R in an optimal manner, key and keen attention must be addressed to the dynamic forces acting at the vehicle/track (V/T), i.e. wheel/rail (W/R) interface, as they represent the key trigger and generator of the entire deterioration process of all Track Components (TC). For that reason, in the sense of appropriate assessment of TC condition and definition of the optimal regime of consequential M&R activities, it is of crucial importance to be able to measure (directly, or at least indirectly) the V/T dynamic forces, which are, on the other hand, a direct consequence of the track and rail geometry, but at the same time, their core generator. In that sense, Vehicle/Track Interaction Monitor (V/TIM) represents one of the latest generation systems aimed at the measurement of TC quality, which, by the use of accelerometers, measures the dynamic vehicle/track interaction. This article explains the importance of M&R activities, influence of dynamic forces onto TC deterioration, as well as a possibility of their measurements and use of the measured data for the M&R optimization.
 
 Keywords:
 Document, symposium, paper