An optimized model for rectangular pile caps supported on a group of piles: Part 2) Optimal design

Abstract

The first part of this research presents an optimized model for rectangular caps or footings supported on a group of piles to obtain the minimum surface in plant (optimal area) bearing an axial load and two moments on the X and Y axis due to a column. The present research shows the optimal design (minimum cost) for pile caps. This model considers that the caps are perfectly rigid, and the piles are articulated at the junction of the caps with the piles and, therefore, the piles transmit only vertical load. The methodology used to obtain the design of the caps considers that all the piles transmit the same vertical load; this only works when the column transmits axial load but not moments. Also, five types of caps supported on a group formed by two, three, four, five and six piles are shown to demonstrate the accuracy of the model presented in this document