Strip footing settlement on sandy soil due to eccentricty load

Abstract

This study investigates the effect of eccentricity load on settlement of shallow foundation rested on sandy soil model. A series of small-scale 1g physical modeling tests was carried out by preparing a model of medium dry sand with 50% of relative density on a rigid testing chamber. A rigid plate was used to replicate a strip footing foundation. Three different locations of loading were created which located at the centre, 0.05 B and 0.1 B from the centre with respect to the width of the footing to investigate the eccentricity effect applied from the footing. Close range photogrammetry and particle image velocimetry (PIV) methods were used to examine the failure mechanisms under the eccentricity design load. In this study, the ultimate, allowable bearing capacity and bearing capacity factor (Nγ) under the eccentricity loading were investigated. It was found that with the increasing of footing eccentricity, the bearing capacity decreased with increasing settlement.