Effect of Geosynthetic Reinforcement in Active Zone on the Behavior of Sheet Pile Walls

    Volume 36, Issue 3 (May 2013)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Published Online: 19 March 2013

    Page Count: 14


    Nasr, Ahmed M. A.
    Associate Professor, Structural Engineering Dept., Faculty of Engineering, Tanta Univ., Tanta,

    Nazir, Ashraf K.
    Associate Professor, Structural Engineering Dept., Faculty of Engineering, Tanta Univ., Tanta,

    (Received 30 October 2011; accepted 17 January 2013)

    Abstract

    The potential benefits of reinforcing the active zone behind a model sheet pile wall were studied. A series of plane strain laboratory model tests were performed on both unreinforced and reinforced active zones loaded with a rigid strip footing. Parameters including the sand relative density, reinforcement embedment depth, type of reinforcement, footing location relative to the sheet pile wall, length of reinforcement, and number of reinforcing layers were varied. The sheet pile wall deflection during loading was measured. Finite element (FE) analyses were performed on a prototype sheet pile wall to supplement the results of the model tests. A two-dimensional plane strain FE model using the computer code PLAXIS was used. Close agreement between the experimental and numerical results was observed (about 4 % to 11 %). The results indicate that the inclusion of reinforcement in the active zone leads to a reduction by about 48 % to 75 % in the lateral deflection. The effectiveness of the reinforcement in decreasing the lateral deflection of the sheet pile wall is attributed to its tensile strength and type. Based on the results of the laboratory model and the numerical analyses, critical values of reinforcement parameters for maximum reinforcing effects are suggested. The results are used to development linear regression equations relating the ultimate lateral capacity of the sheet pile wall to the aforementioned parameters.


    Paper ID: GTJ20120101

    DOI: 10.1520/GTJ20120101

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    Author
    Title Effect of Geosynthetic Reinforcement in Active Zone on the Behavior of Sheet Pile Walls
    Symposium , 0000-00-00
    Committee D35