Pullout test model for extensible reinforcement

A formulation for the analysis of pullout test on highly extensible planar reinforcement is presented. The non-linear differential equation for pullou t mechanism was expressed in non-dimensional form and solved numerically us ing the Gauss-Siedel technique. Parametric study was carried out for variou s ranges of relative stiffnesses, and relative bond resistances. Normalized load-displacement relations and the variations of pullout force and reinfo rcement displacements along the length of reinforcement are presented graph ically. A method for the estimation of the interface interaction parameters from a pre-failure test is also given. The numerical predictions compare w ell with the available experimental pullout test results for various geotex tiles, polymers and nylon geosynthetics. Copyright (C) 1999 John Wiley & So ns, Ltd.