Three-dimensional modelling of slab-track systems based on dynamic experimental tests

The accurate computational modelling of railway systems is crucial for analysis and design, which allows excellent enduring performance such systems. It capable providing the industry with data improving speed, comfort, load capacity reliability. Further, as solutions serve an aid to improve systems, they contribute quality services, social welfare, cost effectiveness sustainability. An important component a system track, which, in general, requires high investments construction maintenance. This work develops calibrated three-dimensional (3D) Finite Element (FE) models slab track can be employed design great level These are developed based on full-scale dynamic tests performed under application loads simulate passage high-speed trains. components considered rails, rail pads, grout, Hydraulicaly Bonded Layer (HBL), Frost Protection (FPL) subgrade. FE built order reproduce measured displacement acceleration test results. Due uncertainties some material properties, parametric also establish characteristics model more sensitive to. has been found that Young’s moduli FPL layer subgrade most parameters. stiffness properties pads play paramount role accuracy model.