2024 Volume 28 Issue 1 Pages 196-203
We develop the FE-based simulation method for ballast settlement phenomena of a jointed track with a grid-type sleeper. The present method is a combination with a wheel-track vibration analysis and a ballast settlement analysis. The vibration analysis is implemented for simulating the maximum of sleeper-ballast force at an each sleeper and the maximum of reaction force of a grid-type sleeper. The ballast settlement is evaluated using an elastoplastic FEM with a cyclic densification model. The evolution of ballast settlement around a rail joint is reduced using a grid-type sleeper, in a numerical test on a railway track with a suspended joint.
