Variance of the Subgrade Reaction for the Estimating the Resistance of a Pile Perpendicular to Pile Axis

摘要

In Japan, a beam on an elastic medium model is usually used for designing piles loaded perpendicular to the pile axis. Three types of subgrade reaction model, namely Chang's model, S-type model, and C-type model, are usually used. The estimated coefficient of subgrade reaction varies from geotechnical investigation results quite differently for each model. It is therefore important to improve the accuracy of estimating the coefficient of subgrade reaction in reliability design methods. To do this for the most popular Chang's model, a new relationship between SVT-N value and the coefficient of subgrade reaction in Chang's model, k_h, is proposed.