| Abstract [eng] |
Rail transport in competition with other modes of transport must improve the quality of passenger and freight transport. It is necessary to maintain the railways in a manner that allows them to transport their passengers and goods quickly, efficiently and safely so that the deviations of their geometrical parameters do not exceed the tolerances. An analysis of the scientific literature was carried out to reveal the problems of railway quality factors. Quantitative and road quality index (KKI) evaluation methods for characterization, assessment and prediction of track status were analysed. The track quality assessment of the KKI is a new approach to rail track assessment methodology and is already widely used worldwide. The structure of railway track, its purpose, normative documents regulating the state of the railway track, new methods for the determination of KKI and suggestions on how to evaluate the numerical values of KKI are analysed. Based on the work of previous researchers and mathematical logic, a table containing different ranges of numerical values for KKI for each road category was created. The Lithuanian Railways’ network and the main characteristics of the country's railways are described. The measurement process, the documents regulating it and the main stages of the measurement process are analysed. The state of the state railways of 2015–2018 has been evaluated for average KKI for all roads, average KKI for individual track geometric parameters, qualitative assessment and data for 2017 are analysed in detail with normal distribution diagrams. The work consists of 7 parts: introduction, review of scientific literature, review and suggestion of track design and evaluation, experimental research and evaluation of railway by road quality index, general conclusions, references, appendixes. Thesis consist of: 70 p. text without appendixes, 30 pictures, 19 tables, 33 bibliographical entries. |
