A user-friendly methodology for efficient non-linear numerical calculations of train-induced ground vibrations in railway embankments has been developed. This was achieved by creating an input file for setting up the problem and a shell program that reads the input file, set-ups, and runs the model of the problem on commercial numerical software, and also extracts the results from the calculations to an output file. Through this, the calculations can be automated and thus become easy to use. In addition, much effort has been put into optimizing the calculations for the computational time while maintaining sufficient accuracy. A key part of the developed methodology is that it includes an efficient way to consider that the soil properties are shear strain dependent. This was achieved using the so-called equivalent linear method and by superposition of the calculated shear strain adjusted linear elastic deformations for a single moving load. The developed methodology has, with good agreement, been verified against a case history with vibrations measurements both before and after ground reinforcement measures consisting of lime-cement columns. The presented methodology, called base-model methodology, can identify the risk for large ground vibrations for planned new and existing railway embankments and design required ground reinforcement measures based on permissible vibration requirements.