Numerical Models for Track Support Structures

by C. S. Desai, (M.ASCE), Prof.; Dept. of Civ. Engrg. and Engrg. Mechanics, Univ. of Arizona, Tucson, Ariz.,
H.J. Siriwardane, (A.M.ASCE), Asst. Prof.; Dept. of Civ. Engrg., West Virginia Univ., Morgantown, W. Va.,


Serial Information: Journal of the Geotechnical Engineering Division, 1982, Vol. 108, Issue 3, Pg. 461-480


Document Type: Journal Paper

Abstract:

Three finite element formulations based on one-, two-, and three-dimensional idealization for analysis of railroad track support structures are presented with major emphasis on the three-dimensional procedure. The formulations incorporate nonlinear constitutive behavior by using four different elastic-plastic laws and thin interface elements for simulation of behavior at junctions. The parameters for defining nonlinear constitutive laws are obtained from comprehensive tests by using a truly triaxial device. The predictions are compared with other available models, and with field observations from the Urban Mass Transportation Administration Test Section at Transportation Test Center, Pueblo, Colorado.



Subject Headings: Three-dimensional analysis | Finite element method | Support structures | Constitutive relations | Triaxial tests | Structural models | Railroad tracks

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