Analysis of the cone penetration test in layered clay

Walker, James and Yu, Hai-Sui (2010) Analysis of the cone penetration test in layered clay. Géotechnique, 60 (12). pp. 939-948. ISSN 1751-7656

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Abstract

This paper presents an analysis of the cone penetration test in multi-layered clays using the commercial finite-element code Abaqus/Explicit. The von Mises yield criterion and its associated flow rule are assumed to model the plastic behaviour of elastoplastic undrained clays. An arbitrary Lagrangian–Eulerian scheme and an enhanced hourglass algorithm are adopted to preserve the quality of mesh throughout the numerical simulation. Initially, the behaviour of the penetration resistance is examined in a soil with only two layers. The bottom layer is the weaker of the two and the behaviour of the penetration resistance when the cone approaches the lower layer is studied. The investigation is then extended to study the cone penetration test in a multi-layered clay by sandwiching a weaker clay layer between two stronger clay layers. The thickness of the weaker clay layer is varied and the behaviour of the penetration resistance is studied in relation to the thickness and relative strength of the soil layers. The results are discussed with respect to the soil mechanisms that are present when the cone moves past the relevant layer boundaries so that the position of these boundaries can be determined more accurately.

Item Type: Article
Keywords: clays, in situ testing, numerical modelling
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Civil Engineering
University of Nottingham, UK > Faculty of Engineering > Department of Civil Engineering
Identification Number: 10.1680/geot.7.00153
Related URLs:
Depositing User: LIN, Zhiren
Date Deposited: 12 Oct 2017 08:07
Last Modified: 13 Oct 2017 16:35
URI: http://eprints.nottingham.ac.uk/id/eprint/47170

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