Reliability Based Optimal Design of Laterally Loaded Pile with Limited Residual Strain Energy Capacity
Abstract—In this study, a general approach to the reliability based limit analysis of laterally loaded piles is presented. In engineering practice the uncertainties play a very important role. The aim of this study is to evaluate the lateral load capacity of free-head and fixed-head long pile when plastic limit analysis is considered. In addition to the plastic limit analysis to control the plastic behaviour of the structure, uncertain bound on the complementary strain energy of the residual forces is also applied. This bound has significant effect for the load parameter. The solution to reliability-based problems is obtained by a computer program which is governed by the reliability index calculation.
P-ULTIMATE FOR UNDRAINED ANALYSIS OF LATERALLY LOADED PILES. DISCUSSION AND CLOSURE
A discussion of a paper with the aforementioned title by Murff and Hamilton, published in this journal (Volume 119, Number 1, January 1993), is presented. The discussion focuses on laterally loaded piles in layered soils. Maugeri, Castelli, and Motta assert that the authors' method overpredicts the ultimate lateral resistance on the pile. Discussion is followed by closure from the authors.
An efficient approach for settlement prediction of pile groups
The paper presents exact closed form solutions for estimating the settlement of single and group piles in non-homogeneous soil, using a load transfer approach derived from elastic continuum theory. The effects of load transfer factor have been explored in detail to account for the effect of a finite depth of compressible soil and non-homogeneity of soil profiles. Interaction factors between pairs of piles, and overall settlement ratios for pile groups of various geometries, are evaluated from the solutions and are shown to be consistent with those obtained from a full boundary element approach. The solutions are in the form of Bessel functions. However, to facilitate evaluation, a simple program called GASGROUP has been developed. The program can be readily used to predict the settlement of large pile groups. The analysis is quick and efficient, and can be run in a personal computer even for a group of 700 piles. The program is used to predict the single and group pile responses for a number of actual pil...