A volumetric model for structured soils based on soil structure instability and generalized suction theories

Liu Xu; Stewart Greenhalgh; Bing Zhou

doi:10.1071/ASEG2006ab096

ISSN: 2202-0586
E-ISSN:

oa A volumetric model for structured soils based on soil structure instability and generalized suction theories
Authors Liu Xu^a, Stewart Greenhalgh^b and Bing Zhou^c
View Affiliations Hide Affiliations

^a Department of Physics, University of Adelaide, North Terrace Campus ADELAIDE, SA, 5005, [email protected] ^b Department of Physics, University of Adelaide, North Terrace Campus [email protected] ^c Department of Physics, University of Adelaide, North Terrace Campus ADELAIDE, SA, 5005, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2006ab096
- Published online: 01 Dec 2006

Abstract

A new compound model is developed to calculate volumetric strains of unsaturated and saturated structured soils. In this model, structured soils are regarded as the composite of undisturbed and disturbed parts, both of which are uniformly distributed. The proportion of the two parts can be calculated through the combination of a pore size distribution curve, a suggested geometric structural model, the structural instability criterion and constitutive models for remoulded soils. The overall volumetric strain increment includes three components: the elastic increment of the undisturbed part, the plastic increment of the disturbed part determined by the application of the generalized suction theory, and the structure collapse contribution which is particularly relevant to the change of void ratio from undisturbed soils to disturbed soils. The relationship between the angle-stiffness of the structural instability criterion and the degree of saturation is determined by the structural strengths revealed by compression tests of natural structured soils. The validity of this model was established by comparing calculated results with published experimental data of collapsible loess.

Article metrics loading...

/content/journals/10.1071/ASEG2006ab096

2006-12-01

2026-01-25

From This Site

/content/journals/10.1071/ASEG2006ab096

dcterms_title,dcterms_subject,pub_keyword

-contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution

10

5

Full text loading...

References

Alonso, E. E., Gens, A. & Josa, A., 1990, A constitutive model for partially saturated soils: Geotechnique, 40(3), 405-430.
Chen Z.H., 1999, Deformation, strength, yield and moisture change of a remolded unsaturated loess: Chinese Journal of Geotechnical Engineering, 21(1), 82-90.
Fredlund D.G. and Rahardjo H. 1997, Soil Mechanics for Unsaturated Soils, Translated by Chen Zhongxi. Beijing, China Architectural Industrial Press.
Hu Z.Q., Shen Z.J. and Xie D.Y., 2000, Research on structural behavior of unsaturated loess: Chinese Journal of Rock Mechanics and Engineering, 19(6): 775-779.
Liu M.D and Carter J.P., 2002, A structured cam clay model, http://www.civil.usyd.edu.au/publications/r814.pdf, on 2005-12-12.
Miao T.D., Liu Z.Y., and Ren J.S., 1999, Deformation mechanism and constitutive relation of collapsible loess: Chinese Journal of Geotechnical Engineering, 21(4), 383-387.
Miao T.D., 2001, Current research on collapsible loess: Research and engineering on collapsible loess, Luo Yusheng, Wang Guolie(Eds) Beijing China Architectural Industrial Press, 73-82.
Miao T.D., Liu Z.Y., and Niu Y.H., 2002, Unified Catastrophic model for collapsible loess: Journal of Engineering Mechanics, ASCE, 128(5), 595-598.
Roscoe K.H. and Burland J.B., 1968, On the generalised stress-strain behaviour of ‘wet clay’ : Engineering Plasticity, J. Heyman and F.A. Leckie (Eds), pp. 535-609.
Rouainia M.and Wood D.M., 2000, A kinematic hardening constitutive model for natural clays with loess of structure: Geotechnique, 50(2), 153-164.
Shen Z.J., 1993, An elastic-plastic damage model for cemented clays: Chinese Journal of Geotechnical Engineering, 15(3), 21-28.
Shen Z.J., 1996, Generalized suction and unified deformation theory for unsaturated soils: Chinese Journal of Geotechnical Engineering, 18(2): 1-9.
Shen Z.J. 2000, A masonry model for structured clays: Rock and Soil Mechnaics, 21(1), 1-4.

/content/journals/10.1071/ASEG2006ab096

Article Type: Research Article

Keyword(s): Collapse; Constitutive models; Instability; Soil structure; Soils

Most Cited This Month Most Cited RSS feed

- Inversion of data from electrical imaging surveys in water-covered areas
  
  Authors M. H. Loke and J. W. Lane
- Inversion of Magnetic Data from Remanent and Induced Sources
  
  Authors Robert G. Elllis, Barrry de Wet and Ian N. Macleod
- A comparison of smooth and blocky inversion methods in 2-D electrical imaging surveys
  
  Authors M. H. Loke, Ian Acworth and Torleif Dahlin
- Designing matched bandpass and azimuthal filters for the separation of potential-field anomalies by source region and source type
  
  Authors Jeffrey D. Phillips
- Bad Colour Maps Hide Big Features and Create False Anomalies
  
  Authors Peter Kovesi
- Practical 3D EM inversion – the P223F software suite
  
  Authors Art Raiche, Fred Sugeng and Glenn Wilson
- Estimating Noise Levels in AEM Data
  
  Authors Andy Green and Richard Lane
- Target delineation using Full Tensor Gravity Gradiometry data
  
  Authors Colm A. Murphy and James Brewster
- Transdimensional Monte Carlo Inversion of AEM Data
  
  Authors Ross C Brodie and Malcolm Sambridge
- The geotech VTEM time domain helicopter em system
  
  Authors Ken Witherly, Richard Irvine and Edward Morrison
More Less

oa A volumetric model for structured soils based on soil structure instability and generalized suction theories

Abstract

Most Read This Month

Most Cited This Month Most Cited RSS feed