INVESTIGATIONS BY THE NONLINEAR ANALYSIS FOR LATERALLY LOADED SINGLE PILES IN SOIL WITH VARIOUS EFFECTIVE STRESSES

Abstract

The authors proposed the relationships between the coefficient of lateral subgrade reaction or the ultimate lateral resistance and the effective stresses based on the results of the lateral laod tests on model piles in sand. For a pile foundation in layers with various ideal effective stresses caused by an earthquake, its lateral behaviors were calculated by the proposed theory in which the above relationships were considered. Furthermore, the piles really damaged by the Hyogoken-Nambu earthquake were also calculated. It is found out from these results that the proposed theory is well able to predict the damages in the piles.