CONFERENCE PROCEEDINGS INTERNATIONAL CONFERENCE"CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2015 "FACULTY OF CIVIL ENGINEERING SUBOTICA , 2015.y., pp. 509-524
MAINTENANCE AS THE KEY TO THE LONGEVITY OF HIGH SPEED LINES IN SERBIA| |
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| DOI: 10.14415/konferencijaGFS 2015.064 |
| UDC: 625.1 |
| CC-BY-SA 4.0 license |
| Author : Jovanović, Stanislav; Božović, Dragan; Čoko, Boško |
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| | Summary: |
| | It is well known and recognized that the Maintenacne & Renewal (M&R)
expenses represent the largest portion of overall Life Cycle Costs (LCC) of railway infrastructure. This is especially pronounced wtih High-speed lines (HSL) which have a whol array of unique characteristics in comparison to the conventional lines. These specficic characteristics, almost without exception, require increased attention that must be paid to the permanent monitoring and measuring of all railway infrastructure components (RIC). These measurements and monitoring decisivelly differ from those of the conventional lines, both in terms of types and the quantity of different measuring systems that must be systematically applied. In addition to the measuring/monitoring systems, equally important are the predictive and timely performance of the M&R works in order to keep all RIC witin very strict HSL tolerances. This is why it is no surprise that the M&R of HSL lines often accout for 100,000 EUR per kilometer of track every year. That means, that for the potential HSL in Serbia, from Belgrade to Subotica, with the length of approximately 200km, some 20 mil. EUR would have to be spent every year only on track M&R. It is important to understand that the need for this kind of approach is not necessitated only by the protection of safety at such high speeds, but also by the drastic increase in dynamic forces at the wheel/rail (W/R) contact, which can occur due to the deterioration of both rail and track geometry if the track would not be permanently and adequately maintained. For that reason, if such an approach is not secured from the first day of HSL operation, the HSL will rapidly deteriorate, and then, due to speed restriction that would inevitably have to be imposed, it would quickly turn into a conventional line, which would all represent an unacceptable and inexcusable waste of extremely high investments. |
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| | Keywords: |
| | Railway, infrastructure, high speed lines, condition monitoring, condition analysis, maintenance & renewal planning |
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