An Analytical Method for Predicting the Pullout Behavior of Embedded Planar Reinforcements with the Consideration of the Residual Interfacial Shear Strength

Abstract

In this paper, an analytical method was proposed to predict the mechanical behavior of embedded planar reinforcements subjected to pullout loads, and a tri-linear shear slip model was employed in the analytical method to consider the residual shear strength at the reinforcement-soil interface. The overall process of the pullout behavior was characterized by five sequential stages. At each stage, closed-form solutions for the distribution of interface shear stress and axial stress along the reinforcement length were obtained as well as the pullout resistance-displacement relationship. On this basis, the analytical model was validated through a comparison with the results of three pullout tests. In conclusion, the pullout resistance-displacement curves and internal displacement distributions predicted by the method agree well with those obtained by the tests.