The Behaviour of Low Confinement Spun Pile to Pile Cap Connection

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An experimental and numerical study of the low confinement spun pile to pile cap connection typically used in Indonesia was performed. A cyclic loading test on two spun pile connections was performed. One was an empty spun pile (SPPC01) and another was filled with reinforced concrete (SPPC02). No shear failure was observed during the test. Filling the reinforced concrete into the spun pile increase the capacity by 54% and also improve the ductility from 4.26 to 4.70. A numerical study was performed to simulate the effect of the soil. A similar spun pile with a fixed connection to the pile cap was embedded in clay. Soil affects the strength and ductility of the connection, but it is not significant. Stiffer soil results in higher bending capacity. The capacity could be approximated based on the P-M interaction. To conclude, the connection of the spun pile to pile cap perform well though the spun pile has insufficient confinement.

Original languageEnglish
Title of host publicationGeotechnical, Geological and Earthquake Engineering
PublisherSpringer Science and Business Media B.V.
Number of pages9
Publication statusPublished - 2022

Publication series

NameGeotechnical, Geological and Earthquake Engineering
ISSN (Print)1573-6059
ISSN (Electronic)1872-4671


  • Bending capacity
  • Ductility
  • Low confinement spun pile


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