Vertical Displacement of Pile Foundation with Footing in Various Soil Conditions

The deep foundations are generally preferred when heavy structural loads have to be transferred through weak sub soils which have low bearing capacity. Generation of excessive stresses may cause failure of foundations but it is mainly caused by excessive displacement and this results in the failure of structure. In this paper vertical settlement is estimated in three different foundations in sandy and clayey soil. Three different models, in which four storied framed structure rests on column footing, single under-reamed friction pile and single under-reamed friction pile with square footing are taken and vertical displacement is estimated on the basis of dead load and live load of the structure. 3D finite element software ANSYS Workbench is used for the modelling and analysis. The aim of this research is to identify the enhancement in the performance of pile foundation by adding a shallow trapezoidal footing along with the single under-reamed friction pile in loose soil strata in static condition. It is observed that the single under-reamed pile which have footing with it has lower vertical settlement as compared to the pile without footing.