Pore pressure development in small-strain undrained loading of soils according to a simple model

TL;DR

This paper presents a simple equation to model pore pressure development in soils under small-strain undrained loading, applicable to triaxial and shear tests, considering both incompressible and compressible pore fluids.

Contribution

It introduces a straightforward mathematical model for pore pressure evolution during undrained soil loading, enhancing understanding of soil behavior under small strains.

Findings

The equation effectively describes pore pressure development in undrained tests.

It accounts for both incompressible and compressible pore fluids.

The model simplifies analysis of small-strain undrained soil behavior.

Abstract

This note discusses a simple equation that may be useful in the study of pore pressures generated in the undrained loading of soils. The equation is employed to describe the pore pressure development accompanying a small stress increment in the undrained triaxial compression test and in the undrained simple shear test. The cases of incompressible and compressible pore fluids are examined.