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Field tests on behavior of pre-bored grouted planted pile and bored pile embedded in deep soft clay

Zhou, J.-jin; Yu, J.-lin; Gong, X.-nan; Yan, T.-long

Soils and Foundations 60(2): 551-561

2020


ISSN/ISBN: 0038-0806
DOI: 10.1016/j.sandf.2020.03.013
Accession: 071024343

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This paper presents a field study on the compressive bearing capacity of pre-bored grouted planted (PGP) pile and bored pile embedded in deep soft clay. The test site consisted of many concrete square piles which were used for the foundation of the old structures. The PGP pile and bored pile were considered as the two suitable pile types in this test site. The test results show that: the compressive bearing capacity of 900 mm PGP pile with 1200 mm enlarged base is identical to the compressive bearing capacity of 1000 mm bored pile, and the ultimate unit skin friction of PGP pile is about 1.28 times the ultimate unit skin friction of bored pile. Based on the comparison between the PGP pile and bored pile, the PGP pile can be considered as a type of resource conservation and eco-friendly pile foundation. Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.

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