Modelling load–displacement response of driven piles in cohesionless soils under tensile loading

Abstract A new methodology for deriving the uplift load–displacement response of long driven piles in cohesionless soils is proposed. This method accounts for the effects of the friction fatigue processes during pile driving and the existence of locked-in residual stresses at the end of pile driving before commencing the pile load test. A hyperbolic formulation is utilized to simulate the nonlinear load transfer curves (the so-called t–z curves). The utility of this technique is demonstrated for a field pullout load test on a driven pile in sand. Predicted and measured load–displacement curves showed good agreement, indicating that this approach yields reasonable results as long as representative input parameters are employed.

[1]  Sang-Seom Jeong,et al.  Shear Load-transfer Characteristics of Drilled Shafts in Weathered Rocks , 1999 .

[2]  Hong Zhu,et al.  LOAD TRANSFER CURVES ALONG BORED PILES CONSIDERING MODULUS DEGRADATION , 2002 .

[3]  Harry M. Coyle,et al.  NEW DESIGN CORRELATIONS FOR PILES IN SAND , 1981 .

[4]  Ibrahim H. Sulaiman,et al.  Skin Friction for Steel Piles in Sand , 1967 .

[5]  M. L. Lings,et al.  An Appraisal of API RP2A Recommendations for Determining Skin Friction of Piles in Sand , 1990 .

[6]  M. Randolph,et al.  Design of driven piles in sand , 1994 .

[7]  M. Randolph,et al.  Analysis of Deformation of Vertically Loaded Piles , 1978 .

[8]  Abdallah I. Husein Malkawi,et al.  ESTIMATION OF POST-DRIVING RESIDUAL STRESSES ALONG DRIVEN PILES IN SAND , 2000 .

[9]  Fred H. Kulhawy,et al.  Limiting Tip and Side Resistance - Fact or Fallacy? , 1984 .

[10]  Jp Turner,et al.  Physical Modeling of Drilled Shaft Side Resistance in Sand , 1994 .

[11]  Barry Lehane,et al.  Mechanisms of Shaft Friction in Sand from Instrumented Pile Tests , 1994 .

[12]  Jean-Louis Briaud,et al.  Piles in Sand: A Method Including Residual Stresses , 1984 .

[13]  Aleksandar S. Vesic,et al.  Tests on Instrumented Piles, Ogeechee River Site , 1970 .

[14]  G. W. Clough,et al.  The Effects Of Residual Driving Stresses On Pile Performance Under Axial Loads , 1978 .

[15]  L. M. Kraft,et al.  THEORETICAL T-Z CURVES , 1981 .

[16]  Rodrigo Salgado,et al.  DETERMINATION OF PILE BASE RESISTANCE IN SANDS , 1999 .

[17]  Charles I. Mansur,et al.  PILE TESTS-ARKANSAS RIVER PROJECT , 1970 .

[18]  Chandrakant S. Desai,et al.  Load‐Deformation Response of Axially Loaded Piles , 1987 .

[19]  E. Saibaba Reddy,et al.  Modified T–Z model—a software for tension piles , 1998 .

[20]  Ibrahim H. Sulaiman,et al.  Uplift Resistance of Piles in Sand , 1976 .

[21]  Mark Randolph,et al.  VERTICALLY LOADED PILES IN NON-HOMOGENEOUS MEDIA , 1997 .

[22]  Richard J. Jardine,et al.  Axial Capacity of Offshore Piles in Dense North Sea Sands , 1998 .