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    Volume 45, Issue 4 (July 2017)

    Accuracy of Interpretation Methods for Deriving p–y Curves From Model Pile Tests in Layered Soils

    (Received 12 March 2015; accepted 20 June 2016)

    Published Online: 20 July 2017

    CODEN: JTEVAB

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    Abstract

    Because of its simplicity and reasonable accuracy, the p–y-curve method is widely used for analyzing laterally loaded piles. The effectiveness of existing approaches for deriving p–y curves is case dependent; thus, a systematic assessment of these interpretation methods is necessary. This study compared p–y curves derived using four data interpretation methods. Instead of experiments, the numerical simulation program LPILE was used to produce hypothetical moment data for positions along a short pile in layered soil. The deduced p–y curves were compared with the “true” p–y curves used for numerical simulations to evaluate the accuracy of the interpretation methods. The comparison demonstrated that the cubic spline method and difference method were the best among the four considered methods for deriving p–y curves. However, the difference method generated a large resistance at the soil surface. Because of this error, the cubic spline method is the preferred method for deriving the response of a laterally loaded pile in layered soil. The results of this study will be useful for obtaining more accurate p–y curves from experimental data and for more effective planning of future experiments.


    Author Information:

    Yuan, B.
    School of Civil and Transportation Engineering, Guangdong Univ. of Technology, Guangzhou,

    Chen, R.
    Shenzhen Graduate School, Harbin Inst. of Technology, Shenzhen,

    Deng, G.
    State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Inst. of Water Resources and Hydropower Research, Beijing,

    Peng, T.
    China Resources (Shenzhen) Co., Ltd, Shenzhen,

    Luo, Q.
    School of Civil and Transportation Engineering, Guangdong Univ. of Technology, Guangzhou,

    Yang, X.
    School of Civil and Transportation Engineering, Guangdong Univ. of Technology, Guangzhou,


    Stock #: JTE20150484

    ISSN:0090-3973

    DOI: 10.1520/JTE20150484

    Author
    Title Accuracy of Interpretation Methods for Deriving p–y Curves From Model Pile Tests in Layered Soils
    Symposium ,
    Committee D18