Seismic testing for track substructure (ballast and subgrade) assessment for passenger/freight corridors

Timothy D. Stark, Soheil Nazarian, Carlton L. Ho, Erol Tutumluer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the research framework and preliminary findings from a recently started Federal Railroad Administration (FRA) sponsored research project at the University of Illinois at Urbana-Champaign on developing and using seismic wave propagation principles to develop a track substructure (ballast and subgrade) condition assessment system. This condition assessment system will be used to evaluate track safety and to predict inspection intervals. This research is needed because there is no tool or system available that quantitatively measures the mechanics based properties of the layers comprising a track system. These mechanics based properties are shear modulus, modulus of deformation (Young's modulus), and shear strength that can be derived from direct measurement of the shear wave velocity profile. Currently the modulus and shear strength of the track system materials are usually estimated which leads to uncertainty in the numerical analyses and estimates of track safety.

Original languageEnglish (US)
Title of host publication2013 Joint Rail Conference, JRC 2013
DOIs
StatePublished - Dec 16 2013
Event2013 Joint Rail Conference, JRC 2013 - Knoxville, TN, United States
Duration: Apr 15 2013Apr 18 2013

Publication series

Name2013 Joint Rail Conference, JRC 2013

Other

Other2013 Joint Rail Conference, JRC 2013
CountryUnited States
CityKnoxville, TN
Period4/15/134/18/13

ASJC Scopus subject areas

  • Transportation

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