Discussion on “A simple critical state interface model and its application in prediction of shaft resistance of non-displacement piles in sand”

Abstract

In a recent paper (Lashkari, 2017), the author proposed a simple constitutive model for predicting the behaviour of a sand-structure interface under the framework of critical state soil mechanics. However, there are some issues, such as the parameters for the proposed interface model and the algorithm used for the pile segment analysis, that should be discussed in detail.