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Evaluation of the properties of railway capping layer soil

A capping layer placed below the ballast protects the underlying weaker soils. Even thick capping layers fail to eliminate plastic deformation of tracks. This paper reports an economical method of evaluating the elastoplastic material properties using penetration tests on specimens contained in rigid test moulds, coupled with a finite element modelling based backcalculation approach. The material properties thus determined simulate the behaviour of capping layers under a track structure effectively as shown using full scale laboratory experiments. Sensitivity of the material parameters to the behaviour of the capping layer soil is also presented.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

35

Issue

5

Start Page

719

End Page

728

Number of Pages

10

ISSN

0266-352X

Location

Amsterdam, The Netherlands

Publisher

Elsevier

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Railway Engineering; Queensland Rail; Queensland University of Technology; TBA Research Institute;

Era Eligible

Yes

Journal

Computers and geotechnics.

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