Development of a simple prediction model for slab track vibration using field measurements

Structural vibration in the frequency range 10Hz to 400Hz can cause considerable disturbance in railway tunnels and on elevated structures. Within the track structure, the primary method of reducing the transmission of vibration from rail traffic is to either add mass and/or reduce the dynamic stiffness of the track support. One way of reducing the support stiffness is to incorporate a low stiffness track fastener that will permit large vertical rail deflections under load. Such a product has replaced traditional fasteners on concrete slab track in a number of metro systems worldwide, under varying local traffic conditions. In each case slab vibration has been monitored, data being obtained before and after installation of the low stiffness fasteners. Results indicate low stiffness rail support offers significant reductions in slab vibration. The degree of reduction is shown to be largely dependent on the degree of stiffness change between the original and replacement fastener. This has lead to the development of a simplified model for predicting changes in ground borne vibration.

Media Info

  • Pagination: 4p.
  • Monograph Title: AusRAIL PLUS 2005, 22-24 November 2005, Sydney, NSW, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01516896
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Mar 4 2014 7:57PM