Consolidation behavior of soils subjected to asymmetric initial excess pore pressure distributions with one-way drainage

Lovisa, Julie, Read, Wayne, and Sivakugan, Nagaratnam (2012) Consolidation behavior of soils subjected to asymmetric initial excess pore pressure distributions with one-way drainage. International Journal of Geomechanics, 12 (3). pp. 318-322.

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Abstract

A consolidating clay layer can be singly or doubly drained. The degree of consolidation is a function of the initial excess pore pressure distribution and the drainage conditions. Traditional geotechnical engineering practice assumes a uniform initial excess pore pressure distribution, for which the singly drained and doubly drained solutions to Terzaghi's one-dimensional consolidation theory are available in most textbooks. In this paper, several symmetric and asymmetric initial excess pore pressure distributions are studied using a series solution method. Excess pore pressure isochrones and average degree of consolidation plots are generated for all cases, assuming an impervious boundary at the base of the clay stratum. These plots enable users to determine the average degree of consolidation and pore pressure at a specific depth for a variety of loading scenarios. Pore pressure redistribution is also clearly more prevalent in singly drained clays, where pore-water pressures at certain depths increase at certain times, a phenomenon not generally expected during consolidation.

Item ID: 21977
Item Type: Article (Refereed Research - C1)
ISSN: 1943-5622
Date Deposited: 08 Jun 2012 02:24
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
Citation Count from Web of Science Web of Science 2
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