High-speed train induced free field vibrations: in situ measurements and numerical modelling

Homologation tests of the HST track between Brussels and Paris have been used to measure free field vibrations and track response during the passage of a Thalys HST at speeds varying between 223 km/h and 314 km/h. These experimental data are complementary to other data sets published in the literature and used in the present paper to validate a numerical model for high-speed train induced vibrations. Use is made of Krylov’s prediction model, that is efficiently reformulated using the Betti-Rayleigh dynamic reciprocity theorem applied to moving loads. The model seems to offer good predictive capabilities for the low and high frequency contribution to the near field response.