Dynamic Impact of a Rail Vehicle on a Rail Infrastructure with Particular Focus on the Phenomenon of Threshold Effect

The paper undertakes analysis of the dynamic impact a rail vehicle on various types railway infrastructure with particular focus phenomenon threshold effect within transition zones an engineering facility. problem locally variable stiffness infrastructure, which in turn could lead to accelerated degradation, is identified. Using analytical and numerical background, computational model presented, based which, it be possible determine support response entire infrastructure. load, caused by passage multiaxle vehicle, taken into account paper. fourth-order differential equation solved using finite differences method application MATLAB script. created algorithm number calculations allowed formulation several solutions that reduce surface zones. In paper, theoretical results are compared field measurements conducted real dynamically loaded rail. Field experiments have been carried out track operation. vertical displacement rail, vehicles passing (both passenger freight trains) has investigated. Researches area facilities. Test points selected places where there sudden change parameters structure (e.g., from concrete sleepers wooden sleepers). Based researches validate obtained calculations.