Pile Group Settlement
The analysis of a pile group in a cohesionless soil is developed based on the linear theory of settlement (Poulos). The load-settlement curve for a pile group and the value of the total settlement sg is increased by the so-called group settlement factor gf.
An immediate settlement of the pile group increased by the group settlement factor is provided by:
pile group settlement
group settlement factor for a cohesionless soil (according to Pile Buck Inc. 1992)
settlement of a single pile (determined, e.g. from the load-settlement curve)
minimum width of pile group
The pile group settlement in a cohesive soil is determined as the settlement of a substitute foundation at a depth of 0,67*L, having a width B and a length B'.
Analyses to calculate settlement are described in more detail in "Settlement analysis".
Scheme of substitute foundation - settlement of pile group in cohesive soil