Track-substructure investigations using ground penetrating radar and track loading vehicle
2003 (English)Conference paper (Other academic)
Upgrading of existing railway lines for higher axle loads and speeds requires new modern methods for in situ investigation. Combination of measurements of track irregularities, continuous track stiffness and non-destructive geophysical methods like Ground Penetrating Radar (GPR) can be a good example of how important information about the status of existing railways can be obtained. GPR and Track Loading Vehicle (TLV) have been tested on the Swedish Western Main Line where subsoil of very soft clays under the track has caused a lot of problems. Results from investigations are going to be used for mitigation of excessive settlements, slides and especially environmental vibrations. Track stiffness was measured several times along the track with different excitation frequencies and travelling speed with Banverket’s Track Loading Vehicle. Track irregularities have been measured twice a year for several years. The GPR measurement was based on verified measurements that have been done for the Czech Railways. The GPR records were processed into the form of longitudinal sections to the depth of 3 m. Statistic methods have been applied for studies of relations between the parameters measured by the GPR and Track Loading Vehicle.
Place, publisher, year, edition, pages
Track-substructure investigation, ground penetrating radar, track loading vehicle, track stiffness
IdentifiersURN: urn:nbn:se:kth:diva-26357OAI: oai:DiVA.org:kth-26357DiVA: diva2:372003
Maintenance & Renewal of Permanent Way; Power & Signalling; Structures & Earthworks, 30th April - 1st May 2003
QC 201011232010-11-232010-11-232012-08-23Bibliographically approved