Instrumented model pile tests on sand plugs
Conference
·
OSTI ID:256979
- Delft Univ. of Technology (Netherlands)
- Fugro Engineers B.V., Leidschendam (Netherlands)
0pen ended piles develop internal frictional resistance between the internal soil plug end the pile wall during axial loading. Current pipe pile design practice assumes that the ultimate internal skin friction is of the same order of magnitude as the outer skin friction. This paper describes a series of laboratory pile load tests on instrumented model pipe piles, designed to investigate the development of plug stresses and skin friction along the plug length during pile loading. The piles contain sand columns of various relative densities and of different heights. The soil plugs are loaded to failure under fully drained conditions. The test data indicate that internal skin friction in sand can be substantially higher than assumed in conventional design practice. This finding could lead to significant economical savings on future pipe pile foundations in sand.
- OSTI ID:
- 256979
- Report Number(s):
- CONF-950604--; ISBN 1-880653-17-6
- Country of Publication:
- United States
- Language:
- English
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