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Analysis of the bearing behaviour of a screw-pile foundation in silt soil.
- Source :
-
Proceedings of the Institution of Civil Engineers: Ground Improvement . Nov2019, Vol. 172 Issue 4, p257-263. 7p. - Publication Year :
- 2019
-
Abstract
- Screw-pile composite foundations have been widely implemented on multiple high-speed railways in China. Their distinctive design with variable sections makes the bearing behaviour of screw piles far more complex than that of common smooth piles. The bearing behaviour of a screw-pile composite foundation was analysed in silt soil on a national key construction project. A comparative analysis of the bearing characteristics of composite foundations of smooth piles and screw piles was performed through model tests. The results showed that, in a single-pile composite foundation and with the same pile diameter and length, the ultimate bearing capacity of the screw pile was 67% higher than that of the smooth pile. The smooth pile showed an area of negative frictional resistance at the top of the composite foundation. The screw pile had a negative friction area below the junction of the smooth section and the screw section in the screw-pile composite foundation. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SILT
*SOILS
*CONSTRUCTION projects
*BEHAVIOR
*GEOTECHNICAL engineering
Subjects
Details
- Language :
- English
- ISSN :
- 17550750
- Volume :
- 172
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Proceedings of the Institution of Civil Engineers: Ground Improvement
- Publication Type :
- Academic Journal
- Accession number :
- 139138168
- Full Text :
- https://doi.org/10.1680/jgrim.18.00055