Nonlinear Undrained Lateral Response of Rigid Drilled Shafts Using Continuum Theory

by Paul W. Mayne, (M.ASCE), Georgia Inst of Technology, Atlanta, United States,
Fred H. Kulhawy, (F.ASCE), Georgia Inst of Technology, Atlanta, United States,
Charles H. Trautmann, (M.ASCE), Georgia Inst of Technology, Atlanta, United States,

Document Type: Proceeding Paper

Part of: Vertical and Horizontal Deformations of Foundations and Embankments

Abstract: The nonlinear undrained response of rigid drilled shafts under static lateral and moment loading is evaluated within the context of elastic continuum theory. The approximate approach utilizes a hyperbolic degraded secant modulus to simulate the load-displacement relationship, resulting in an expression that includes only two soil properties: undrained strength (su) and soil modulus (Es). An evaluation of ultimate lateral capacity (Hu) is also obtained in the limit as the displacements δ→∞. The model is applied to the results of model foundation load tests having varied geometry, load eccentricity, and soil stress history.

Subject Headings: Lateral loads | Load tests | Load factors | Soil modulus | Soil strength | Load bearing capacity | Static loads | Model tests

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