The presented methodology predicts the pile head response (i.e. pile head load - displacement curve) and develops the load transfer (t-z) curve of piles in sandy soils under tension forces based on soil/pile properties and soil-pile interaction. The proposed approach improves the prediction of the t-z curve in sandy soils compared to current practice. The method employs a nonlinear soil constitutive model to calculate the mobilized shear stress/strain in soil at the soil-pile interface induced by pile upward displacement. The approach accounts for the influence of the pile slenderness ratio on the predicted t-z curve and is validated through comparisons with measured pile head response and t-z curves from full-scale pile load tests.
Subjects: Axial load, Pile, Sand, Tension, t-z Curve, Pile head stiffness
Author: Mohamed Ashour, Associate Professor of Civil Engineering, Jogeshwar P. Singh, Aser I. Abbas and Project Engineer
Publisher: DFI