Consolidation behaviour of soils subjected to asymmetric initial excess pore pressure distributions

Lovisa, Julie, Read, Wayne, and Sivakugan, Nagaratnam (2010) Consolidation behaviour of soils subjected to asymmetric initial excess pore pressure distributions. International Journal of Geomechanics, 10 (5). pp. 181-189.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1061/(ASCE)GM.1943-...

Abstract

Although the consolidation settlements beneath foundations and embankments are rarely one dimensional, Terzaghi's one-dimensional consolidation theory is often applied to these situations to approximate consolidation behavior. This paper investigates the consolidation behavior of a soil stratum subjected to various initial excess pore pressure distributions which occur under one-dimensional loading. The results show that analysis in terms of average degree of consolidation provides an incomplete representation of the consolidation behavior. While the average degree of consolidation curves for all uniform and linearly varying initial distributions are identical, the degree of consolidation isochrones for each distribution are unique. Furthermore, the application of a bottom-skewed initial excess pore pressure distribution results in a redistribution of pore pressures toward the skewed region so that an increase in excess pore pressure occurs at some depth after consolidation has already commenced. As a result, conventional consolidation relationships are considered inappropriate for these cases, and an alternative method of consolidation analysis in terms of normalized pore pressures is proposed.

Item ID: 11915
Item Type: Article (Refereed Research - C1)
Keywords: pore pressure; soil consolidation; clays; asymmetry
ISSN: 1943-5622
Date Deposited: 15 Sep 2010 23:19
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 Scopus Scopus 9
Downloads: Total: 2
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page