Analysis and Modelling of induced pore pressures due to pile driving.

Abstract

This Master’s Thesis discusses about the development of pore water pressures in the surrounding soil during pile driving.Several studies have already been done on this ground. These papers and books have been used to establish the background. The thesis can be divided into three parts. The first part describes the extensive literature survey of piling activities, effects on soil properties as well the mechanism of the pore pressure development especially for clay. In the second part, the pore pressure measurements during driving from the Ovre Sund bridge project, Drammen, Norway has been analyzed and compare with the theory. It has been observed that pore water pressure increases when piles are driven and this increase is higher if the driven pile is closer to the piezometer station. The pore pressure development has also described with the theory of expanding cavity. The last part focuses on Numerical analysis to model the excess pore pressure development during piling activity using PLAXIS and the effect on the stability of the slope. LE method using GeoSuite– Stability, SLIDE have been used to study the effect of piling on the stability.