TY - JOUR A1 - Auersch, Lutz A1 - Said, Samir T1 - Track-soil dynamics – calculation and measurement of damaged and repaired slab tracks N2 - The damage detection and repair control have become important tasks for ballast and slab tracks. Measurements which compare the damaged and the repaired status of the same track section at different times, or which compare a damaged and an intact track section at the same time, have been successfully performed at some sites in Germany. The loss of contact between the sleeper and the track plate, between the track plate and the base plate, and between the base plate and the base layer have been analysed. The soil properties of each site have been measured and have been used to establish realistic track-soil models. Theoretical results of the wavenumber domain and the finite-element boundary element method have been compared with the experimental results. The observed experimental and theoretical results, changes in the time histories of displacements and velocities due to train passages and in the transfer functions (receptances) due to hammer impacts, are encouraging that these measurements can be used to detect track damage. KW - Railway track KW - Slab track KW - Track-soil interaction KW - Field tests KW - Track damage KW - Monitoring KW - Finite element method KW - Boundary element method PY - 2017 U6 - https://doi.org/10.1016/j.trgeo.2017.06.003 SN - 2214-3912 VL - 12 IS - September SP - 1 EP - 14 PB - Elsevier CY - London AN - OPUS4-42581 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -