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  • Investigation of the Behavior of Piled Raft Foundations in Sand by Numerical Modeling

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    58592_1.pdf (153.9Kb)
    Author(s)
    Oh, EYN
    Bui, QM
    Surarak, C
    Balasurbamaniam, AS
    Griffith University Author(s)
    Oh, Erwin
    Balasubramaniam, Bala B.
    Surarak, Chanaton
    Bui, Quan-Minh
    Year published
    2009
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    Abstract
    This paper is on 3-D analysis of piled raft foundations on sand. The numerical analysis was carried out with three typical load intensities of the serviceability load. Further, extensive parametric studies were carried out with the variables pile spacing, number of piles, pile diameter, raft dimension ratio, and raft thickness. The maximum settlement of the piled rafts depends on the pile spacing and the number of piles; while the raft thickness does not have a significant effect. In all cases, the normalized settlement recorded is mostly less than 2% of the raft width and the maximum value was noted for the 8x27m ...
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    This paper is on 3-D analysis of piled raft foundations on sand. The numerical analysis was carried out with three typical load intensities of the serviceability load. Further, extensive parametric studies were carried out with the variables pile spacing, number of piles, pile diameter, raft dimension ratio, and raft thickness. The maximum settlement of the piled rafts depends on the pile spacing and the number of piles; while the raft thickness does not have a significant effect. In all cases, the normalized settlement recorded is mostly less than 2% of the raft width and the maximum value was noted for the 8x27m piled raft. The increase in raft thickness reduces the differential settlement in the foundations. The raft-soil stiffness (Krs) is shown to influence the differential settlement and has the largest influence. The performance of piled raft in sandy soil condition is assessed and general conclusions are also made.
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    Conference Title
    Proceedings of the International Offshore and Polar Engineering Conference
    Publisher URI
    http://www.isope.org
    Copyright Statement
    © 2009 ISOPE. The attached file is reproduced here in accordance with the copyright policy of the publisher, for your personal use only. No further distribution permitted. For information about this conference please refer to the publisher's website.
    Subject
    Civil Geotechnical Engineering
    Publication URI
    http://hdl.handle.net/10072/29998
    Collection
    • Conference outputs

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