Abstract
Securing durability of parameter quality of track alignment design and track geometry is a goal of each railway infrastructure manager. To accomplish this goal, various methods and procedures are applied, but they are all based on regular diagnostics, analysis of its results according to valid legislation and design and implementation of respective maintenance and repair works. The technological and economic optimization of planning and implementation of maintenance and repair works, based on prediction of quality development of railway track, is conditioned by precisely implemented and evaluated monitoring. In relation to these facts, the first part of the paper brings an overview of the problem of monitoring the ballastless structure and its transition areas around portals of the Turecky vrch tunnel by methods of complex diagnostics and quality evaluation of the structure including prediction of the structural quality development. The second part of the paper deals with the analysis of the detected errors of the ballastless track with specific focus on transition areas and on the ballasted track. It also summarizes the possibilities of elimination of these errors in building further sections with ballastless track. Modernization of these sections within modernization of ZSR infrastructure is a topical problem.
Highlights
Various methods and procedures are applied, but they are all based on regular diagnostics, analysis of its results according to valid legislation and design and implementation of respective maintenance and repair works
The experimental section in the area of portals of the Turecky vrch tunnel, its parameters, measuring devices and diagnostics methods, its assessment and partial results were in detail specified in [2] and this monitoring will continue in the future
- overall quality mark (OQM) which serves for assessment of track geometry in the evaluated section as a whole
Summary
The railway track monitoring determines the state of constructions and facilities of railway infrastructure, state of particular structural parts and their functioning, parameters and wear, with regard to tolerances, health, fire and environmental safety, clearances along the track and walking and handling clearance. The experimental section in the area of portals of the Turecky vrch tunnel, its parameters, measuring devices and diagnostics methods, its assessment and partial results were in detail specified in [2] and this monitoring will continue in the future. The monitored section has a unique superstructure in Slovak Republic: ballasted and ballastless superstructure Between these two structures there is a transition area, which is the most. 2, south portal; both sections are 175 m long; km 102.360 000 – km 102.535 000): - km 102.360 000 – km 102.460 500 ballasted superstructure (conventional railway superstructure), - km 102.460 500 – km 102.480 500 transition area, - km 102.480 500 – km 102.535 000 ballastless track (unconventional superstructure). 15. 10. 2015, seventh operational measurement (PO7) on 22. 03. 2016 and 23. 03. 2016
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