Settlement‐Time Predictions in Preloading
Publication: Journal of Geotechnical Engineering
Volume 109, Issue 6
Abstract
Proper planning of preloading requires time predictions that cannot be obtained reliably from laboratory odometer tests. Time forecasts should be based on field permeability tests or test fills. The settlement versus log time curve of preloading can assume a variety of shapes, depending on the geometry and permeability of sand‐silt contained within the consolidating clay. Experience indicates that three types of curves are recurrent: (1) S‐shaped; (2) bilinear with increase in slope; and (3) linear. The first kind shows that settlement is about completed; for (2) and (3), approximate equations are proposed for predicting the settlement of the permanent structure from settlements observed during preloading. Examples are presented from two construction sites in Greece.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Aldrich, H. P., “Precompression for Support of Shallow Foundations,” Journal of the Soil Mechanics and Foundations Division, ASCE, No. SM2, Proc. Paper 4267, Mar., 1965, pp. 5–20.
2.
Anderson, K. H., and Clausen, C. J. F., A Fifty‐Year Settlement Record of a Heavy Building on Compressible Clay,” Paper II/1, Settlement of Structures, Conference of the British Geotechnical Society, Apr., 1974, Pentech Press, London.
3.
“Construction of Roads on Compressible Soils,” Organization for Economic Co‐operation and Development, Paris, Dec., 1979, p. 43.
4.
Johnson, S. J., “Precompression for Improving Foundation Soils,” Journal of the Soil Mechanics and Foundations Division, ASCE, No. SM1, Proc. Paper 7020, Jan., 1970, pp. 111–144.
5.
Kotzias, P. C., and Stamatopoulos, A. C., “Preloading for Heavy Industrial Installations,” Journal of the Soil Mechanics and Foundations Division, ASCE, No. SM6, Proc. Paper 6902, Nov., 1969, pp. 1335–1355.
6.
Lambe, T. W., and Whitman, R. V., Soil Mechanics, 1st ed., John Wiley and Sons, New York, N.Y., 1969, pp. 406–419.
7.
Lewis, W. A., Murray, R. T., and Symons, I. F., “Settlement and Stability of Embankments Constructed on Soft Alluvial Soils,” Proceedings of the Institution of Civil Engineers, Great Britain, Part 2, Dec., 1975, pp. 571–593.
8.
Simons, N. E., “Normally Consolidated and Lightly Over‐Consolidated Cohesive Materials,” Review Paper: Session II, Settlement of Structures, Conference of the British Geotechnical Society, Apr., 1974, Pentech Press, London, pp. 513–519.
9.
Stamatopoulos, A. C., and Kotzias, P. C., “The Specific Constrained Modulus,” Paper 1/61, Proceedings of the 8th International Conference on Soil Mechanics and Foundation Engineering, Moscow, 1973.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 109 • Issue 6 • June 1983
Pages: 807 - 820
Copyright
Copyright © 1983 ASCE.
History
Published online: Jun 1, 1983
Published in print: Jun 1983
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.