Back to Search
Start Over
Improved analysis and design for surcharging.
- Source :
-
Proceedings of the Institution of Civil Engineers: Ground Improvement . Mar2024, Vol. 177 Issue 1, p3-11. 9p. - Publication Year :
- 2024
-
Abstract
- Surcharging or preloading is one of the oldest and most widely used in situ ground improvement techniques to strengthen weak compressible clays and to remove undesirable settlements prior to erection of permanent infrastructure. Recently, the ground improvement technique has been adopted in combination with many other techniques. The current design methodology for surcharging based on the concept of average degree of consolidation is inadequate, as all the primary consolidation settlement to be induced by the permanent load is not eliminated by the surcharging process. The problem is quantitatively analysed using Terzaghi's one-dimensional consolidation theory. The proportion of residual primary consolidation settlement is quantified, and the starting time of the re-occurrence of primary consolidation on exertion of the permanent load is determined. The effect of a change in surcharging duration on the proportion of residual settlement is quantified. The results are presented in design charts to facilitate application of the results by practicing geotechnical engineers. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SURCHARGES
*GEOTECHNICAL engineering
Subjects
Details
- Language :
- English
- ISSN :
- 17550750
- Volume :
- 177
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Proceedings of the Institution of Civil Engineers: Ground Improvement
- Publication Type :
- Academic Journal
- Accession number :
- 175571914
- Full Text :
- https://doi.org/10.1680/jgrim.22.00044