Down-Hole Collapse Test System
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Volume 121, Issue 4
Abstract
An in-situ collapse test for collapsible soils was developed. The test is conducted in a borehole with a load applied to a loading plate at the base of the hole. Water is introduced, and the load-displacement response of the soil is monitored. An analysis of the stress and the degree of wetting encountered during this test was based on a combination of field investigation (empirical data) and finite-element analyses. These studies enabled the development of a technique by which the load-displacement data, obtained from the test, can be converted to stress-strain data. Simplified charts for interpretation of the in-situ test results are presented. A series of in-situ collapse tests was performed at a site known to exhibit wetting-induced collapse. A footing test, in which collapse settlements were induced, was also performed at this site. The recommended analysis of the in-situ test was used, and close agreement was obtained between estimated footing settlement and observed settlement.
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References
1.
Alonso, E. E., Gens, A., and Josa, A.(1990). “A constitutive model for partially saturated soils.”Géotechnique, 40(3), 405–430.
2.
Bowers, M. (1986). “In-situ soil testing system for collapsible soils,” PhD thesis, Arizona State University, Tempe, Ariz.
3.
Dudley, J. G.(1970). “Review of collapsing soils.”J. Soil Mech. and Found. Div., ASCE, 96(3), 925–947.
4.
El-Ehwany, M., and Houston, S.(1990). “Settlement and moisture movement in collapsible soils.”J. Geotech. Engrg., ASCE, 116(10), 1521–1535.
5.
Graphical Interactive Finite Element Total System (GIFTS) User's Manual. (1987). CASA/GIFTS, Inc., Tucson, Ariz.
6.
Houston, S. (1992). “Partial wetting collapse predictions.”Proc., 7th Int. Conf. on Expansive Clays, Dallas, Tex., Vol. 1, 302–306.
7.
Houston, S. L., and El-Ehwany, M.(1991). “Sample disturbance of cemented collapsible soils.”J. Geotech. Engrg., ASCE, 117(5), 731–752.
8.
Houston, S., Houston, W., and Spadola, D.(1986). “Prediction of field collapse of soils due to wetting.”J. Geotech. Engrg., ASCE, 114(1), 40–58.
9.
Houston, W., Mahmoud, H., and Houston, S. (1993). “A laboratory procedure for partial-wetting collapse determination.”Unsaturated Soils, Geotech. Special Publ. No. 39, ASCE, New York, N.Y., 54–63.
10.
Kohgo, Y., Nakano, M., and Miyazaki, T. (1992). “Soil collapse prediction using an elastoplastic model.”Proc., 7th Int. Conf. on Expansive Clays, Dallas, Tex., Vol. 5, 55–60.
11.
Krutov, V., and Tarsova, I. (1964). “A method for determining the magnitude of the initial pressure for slumping soils.”Soviet J. Soil Mech. and Found. Engrg., Vol. 1, 7–9.
12.
Mahmoud, H. (1991). “The development of an in-situ collapse testing system for collapsible soils,” PhD thesis, Arizona State University, Tempe, Ariz.
13.
McFarlane, R. (1981). “A field test for detecting collapse susceptible soils,” MSc thesis, University of Arizona, Tucson, Ariz.
14.
Wheeler, S., and Sivakumar, V. (1992). “Critical state concepts for unsaturated soil.”Proc., 7th Int. Conf. on Expansive Clays, Dallas, Tex., 167–172.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 121 • Issue 4 • April 1995
Pages: 341 - 349
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Apr 1, 1995
Published in print: Apr 1995
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