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    Service limit state resistance factors for drilled shafts

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    Misra_service_limit_2009.pdf (220.1Kb)
    Issue Date
    2009
    Author
    Misra, Anil
    Roberts, L. A.
    Publisher
    ICE Publishing
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    The analysis of bored piles, or drilled shafts, at the service limit state is important when foundation settlements are critical to the operation of a structure. The t–z method is a widely used soil–structure interaction model for the analysis of drilled shaft settlement. In current practice, nominal values of soil stiffness and strength parameters are used to determine settlement based upon the t–z method. However, the nominal values can vary from one designer to another, making the results somewhat inconsistent. By considering reliability-based design principles, probabilistic relationships can be incorporated into the settlement analysis of the drilled shaft, and thus design uncertainty can be quantified. Following this approach, load and resistance factor design (LRFD) procedures may be utilised and resistance factors established for use in design. Using a t–z model and the Monte Carlo simulation process, probability distributions are determined for drilled shaft capacity at the service limit state. Resistance factors are calculated based upon these relationships. The drilled shaft geometry and the shaft/soil interface parameters are varied so that their effects on the resistance factors may be understood.
    Description
    This is the published version. Copyrigh 2009 ICE Publishing
    URI
    http://hdl.handle.net/1808/18917
    DOI
    https://doi.org/10.1680/geot.2008.3605
    Collections
    • Civil, Environmental & Architectural Engineering Scholarly Works [117]
    Citation
    Misra, A., and L.a. Roberts. "Service Limit State Resistance Factors for Drilled Shafts." Géotechnique 59.1 (2009): 53-61. http://dx.doi.org/10.1680/geot.2008.3605

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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