Exact equivalent model for a laterally-loaded linear pile-soil system
Journal
Soils and Foundations
Journal Volume
47
Journal Issue
6
Pages
1053-1061
Date Issued
2007
Author(s)
Chiou, Jiunn-Shyang
Abstract
When using the substructure method for a pile-supported structure, it is common to adopt a simple element (equiva-lent model) to simulate the load-deflection behavior of a laterally loaded pile. Conventionally, two kinds of equivalent models, the uncoupled spring model and the equivalent cantilever model, are used to approximate the lateral pile-head response of a laterally loaded pile. These equivalent models can not work equally-well for different pile arrangements and loading conditions because the stiffness matrix (or flexibility matrix) of these equivalent models do not entirely match that of the original pile-soil model. The response obtained will never give correct displacements and forces simultaneously. To solve this problem, this study develops an exact equivalent model, in which an artificial lateral spr-ing is added at the base of the cantilever to modify the fixed-base cantilever model so that it can completely represent the pile-head behavior of a laterally loaded pile-soil system. For verification, comparison studies between the proposed model and conventional equivalent models are conducted to show the effectiveness of the proposed model.
SDGs
Type
journal article