Abstract
This article deals with the problem of evaluation of effectiveness for separating layers in railway track structure. The statistical analysis of railway track characteristics in this study was carried out for sections of railways with separating layers in track structure and without such layers. Evaluation of effectiveness was done by means of life cycle cost calculation and failure rate prediction, using the life cycle model based on reliability analysis.Parameters of trends between intensity of failure accumulation and operating time of track structure (in years or tons) were calculated on the basis of railway infrastructure automated system database. Source data for calculations are characteristics of operational condition, features of track construction, values of failure rate, statistics on track geometry and maintenance of way works, performed on railroad section. Values of failure rate were calculated using the life cycle model based on reliability analysis. This model describes changes of railway track technical condition for all periods of its life cycle: period of infant mortality, useful life period and wear out period.As a result, values of economic effect for separating layers in different operation conditions are given.
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