Effective Stress Analysis and Set-up for Shaft Capacity of Piles in Clay

@inproceedings{Fellenius2008EffectiveSA,
  title={Effective Stress Analysis and Set-up for Shaft Capacity of Piles in Clay},
  author={Bengt H. Fellenius},
  year={2008}
}
A case history of repeated dynamic and static loading tests in Alberta on two pipe piles during dissipation of driving-induced pore pressures is presented together with three reanalyzed published case histories involving similar records. The four case histories demonstrate that, for each case, the same effective-stress proportionality coefficients, beta-coefficients, fit the capacities at different degrees of dissipation of excess pore pressures. For two of the test sites, the beta-coefficients… Expand
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A full scale investigation with six instrumented test piles has been carried out on the Saint-Alban test site in order to study the behaviour of friction piles in soft sensitive soils. The first partExpand
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A full-scale investigation with two instrumented test piles was carried out at the St Alban test site, to study the increase in bearing capacity with time of short friction piles jacked into anExpand
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Six methods to determine axial pile capacity directly from cone penetration test (CPT) data are presented, discussed, and compared. Five of the methods are CPT methods that apply total stress and aExpand
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The available literature indicates that pile side shear increases almost linearly with the logarithm of time elapsed after driving, sometimes described using a dimensionless setup factor. A test pileExpand
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Tests on piles—driven or bored—sometimes include instrumentation for determining the load distribution. The instrumentation can range from a telltale or two through a sophisticated array of strainExpand
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The prediction of axial and lateral pile behaviour is a complex engineering problem. Traditional methods of data collection and subsequent analyses are frequently in error when compared toExpand
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Downdrag Measurements on a 160-Ft Floating Pipe Test Pile in Marine Clay
Large negative skin friction loads were observed on a 160 ft (49 m) steel pipe test pile floating in marine clay. The test pile was driven, open-ended, on the centerline of a 30 ft (9 m) highExpand
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