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  • Compressive and Uplift Static Load Tests of Shaft and Base Grouted Concrete Bored Piles

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    Author(s)
    Zhou, J
    Oh, E
    Zhang, X
    Jiang, H
    Bolton, M
    Wang, P
    Griffith University Author(s)
    Bolton, Mark W.
    Oh, Erwin
    Zhou, Jialin
    Year published
    2017
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    Abstract
    This paper provides an investigation of shaft and base grouted concrete pile behavior by conducting vertical compressive and uplift static load tests (SLTs) in Jinan, China. Three concrete piles were tested by compressive SLTs. Two of these piles were applied with shaft and base grouting, and base grouting technology respectively, and the third was applied without any grouting. Two uplift SLTs were carried out on one shaft and base grouted pile, and one pile without grouting. Traditional methods which include Load-settlement curvatures (L-s), Settlement-log time curvatures (s-lgt) and Time-log Load curvatures (t-lgQ) analysis ...
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    This paper provides an investigation of shaft and base grouted concrete pile behavior by conducting vertical compressive and uplift static load tests (SLTs) in Jinan, China. Three concrete piles were tested by compressive SLTs. Two of these piles were applied with shaft and base grouting, and base grouting technology respectively, and the third was applied without any grouting. Two uplift SLTs were carried out on one shaft and base grouted pile, and one pile without grouting. Traditional methods which include Load-settlement curvatures (L-s), Settlement-log time curvatures (s-lgt) and Time-log Load curvatures (t-lgQ) analysis were provided to check if the bored piles reached the design requirement. In addition, an interpretation of the test results from Double-tangent, DeBeer's, and Chin's methods (for compressive SLTs) and Mazurkiewicz's method (for uplift SLTs) were provided for determining the ultimate pile capacity where piles experienced non-plunging failure. Results from the five SLTs program indicates that the Double-tangent and DeBeer's test results are close to each other whereas Chin's method overestimates the pile capacity; the base and shaft grouting pile and base grouting pile (compressive load) increases 9.82% and 2.89% of its capacity, respectively. Compared to the ultimate uplift SLTs, there is a 15.7% increment of pile capacity after using base and shaft grouting technology.
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    Journal Title
    Proceedings of the Annual International Offshore and Polar Engineering Conference
    Volume
    1-4
    Publisher URI
    https://www.onepetro.org/conference-paper/ISOPE-I-17-168
    Copyright Statement
    © 2017 ISOPE. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the author(s).
    Subject
    Maritime Engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/372706
    Collection
    • Journal articles

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