Analytical Interaction Diagram for Lateral Responses of a Rigid Pile in Homogeneous Overconsolidated Clay
Journal
Journal of Geotechnical and Geoenvironmental Engineering
Journal Volume
147
Journal Issue
9
Date Issued
2021
Author(s)
Abstract
This paper proposes analytical solutions and a normalized interaction diagram for the lateral responses of a rigid pile subjected to a combined horizontal force and moment. The analysis model considers a rigid pile embedded in homogeneous cohesive soil (assuming that the horizontal subgrade stiffness and yield strength are constant with depth). Different states of soil yielding, as well as the ultimate state, are defined according to the development of the yielding range of soil around the ground surface and pile tip. Through the equilibria of moment and horizontal force at the pile head, the analytical solutions of the failure envelope and the displacement and rotation responses for different soil states are derived. These solutions can be used to build the force-displacement and moment-rotation curves at the pile head. The results of the laboratory and field tests reported in the literature are simulated for demonstration. Furthermore, the normalized interaction diagram between the pile-head moment and horizontal force is built, using which the state of soil yielding and corresponding displacement mode of the pile under a pile-head loading condition can be traced. ? 2021 American Society of Civil Engineers.
Subjects
Combined loading
Horizontal force
Moment
Overconsolidated clay
Rigid piles
Soils
Displacement modes
Failure envelope
Force displacement
Horizontal forces
Horizontal subgrade
Interaction diagram
Moment rotation curve
Overconsolidated clays
Piles
cohesive soil
displacement
dynamic response
force
loading test
pile
pile response
soil-structure interaction
Type
journal article