Effects of principal stress rotation on resilient behavior in rail track foundations

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dc.contributor.author Grabe, P.J. (Hannes)
dc.contributor.author Clayton, C.R.I.
dc.date.accessioned 2014-07-15T11:21:18Z
dc.date.available 2014-07-15T11:21:18Z
dc.date.issued 2014-02
dc.description.abstract The design of a railway track substructure requires a realistic understanding of the resilient behavior of the underlying track foundation materials, namely, the subballast and subgrade layers. Currently, the best available method of characterizing the resilient behavior of track foundation materials is through the execution of cyclic triaxial tests, although these do not have the ability to impose principal stress rotation (PSR) on test specimens. A previous paper by the authors demonstrated that PSR increases the rate of permanent strain development. This paper reports on the effects of PSR on the resilient behavior of track foundation materials. Four different reconstituted soils selected to represent typical track foundation materials were subjected to undrained cyclic and torsional shear tests in a hollow-cylinder apparatus. It was established that PSR reduces the resilient modulus of the materials compared with cyclic loading without PSR. The effects of PSR as a function of clay content, overconsolidation ratio (OCR), and consolidation regime (isotropic or anisotropic) were also investigated. en_US
dc.description.librarian hb2014 en_US
dc.description.uri http://ascelibrary.org/loi/jggefk en_US
dc.identifier.citation Grabe, PJ & Clayton, CRI 2014, 'Effects of principal stress rotation on resilient behavior in rail track foundations', Journal of Geotechnical and Geoenvironmental Engineering, vol. 140, no. 2, pp. 1-10. en_US
dc.identifier.issn 1090-0241 (print )
dc.identifier.issn 1943-5606 (online)
dc.identifier.other 10.1061/(ASCE)GT.1943-5606.0001023
dc.identifier.uri http://hdl.handle.net/2263/40783
dc.language.iso en en_US
dc.publisher American Society of Civil Engineers en_US
dc.rights © 2013 American Society of Civil Engineers. en_US
dc.subject Cyclic loads en_US
dc.subject Laboratory tests en_US
dc.subject Shear tests en_US
dc.subject Railroad tracks en_US
dc.subject Stress en_US
dc.subject Resilient modulus en_US
dc.subject Principal stress rotation (PSR) en_US
dc.title Effects of principal stress rotation on resilient behavior in rail track foundations en_US
dc.type Postprint Article en_US


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