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Geomechanics and Engineering
  Volume 5, Number 5, October 2013 , pages 379-399
DOI: https://doi.org/10.12989/gae.2013.5.5.379
 


Winkler Springs (p-y curves) for pile design from stress-strain of soils: FE assessment of scaling coefficients using the Mobilized Strength Design concept
Dj. Amar Bouzid, S. Bhattacharya and S.R. Dash

 
Abstract
    In practice, analysis of laterally loaded piles is carried out using beams on non-linear Winkler springs model (often known as p-y method) due to its simplicity, low computational cost and the ability to model layered soils. In this approach, soil-pile interaction along the depth is characterized by a set of discrete non-linear springs represented by p-y curves where p is the pressure on the soil that causes a relative deformation of y. p-y curves are usually constructed based on semi-empirical correlations. In order to construct API/DNV proposed p-y curve for clay, one needs two values from the monotonic stress-strain test results i.e., undrained strength (su) and the strain at 50% yield stress (
 
Key Words
    semi-analytical FE analysis; MSD; p-y curves; interface elements; laterally loaded single piles; strain energy
 
Address
1) Dj. Amar Bouzid: Department of Civil Engineering, Faculty of Sciences and Technology, University of Medea, Quartier Ain D\'hab, Medea 26000, Algeria;
2) S. Bhattachary: Department of Civil Engineering, University of Bristol, Room 237, Queens Building, Bristol BS8 1TR, UK;
3) S.R. Dash: Department of Civil Engineering, Indian Institute of Technology, Bhubaneswar, India.
 

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