During seismic shaking soil movements force piles to deform, resulting in a complex interplay between the two systems commonly referred to as “kinematic interaction”. This interaction generates internal forces along piles even in the absence of a superstructure. Current design practice usually takes into account only forces transmitted to the pile from the superstructure, thus neglecting kinematic interaction. Despite intense research in the topic, few contributions focus on kinematic effects at the pile head in the presence of a stiff pile cap restraining its rotation. The subject may be of importance,for the pile head is subjected both to relevant kinematic and inertial moments, the latter attenuating rapidly with depth. The paper presents the results of an extensive parametric study leading to a simplified formula for evaluating kinematic moments at the pile head in a two-layer soil profile.
Kinematic bending moment at pile head in layered soil
DI LAORA R.;MANDOLINI, Alessandro;
2011
Abstract
During seismic shaking soil movements force piles to deform, resulting in a complex interplay between the two systems commonly referred to as “kinematic interaction”. This interaction generates internal forces along piles even in the absence of a superstructure. Current design practice usually takes into account only forces transmitted to the pile from the superstructure, thus neglecting kinematic interaction. Despite intense research in the topic, few contributions focus on kinematic effects at the pile head in the presence of a stiff pile cap restraining its rotation. The subject may be of importance,for the pile head is subjected both to relevant kinematic and inertial moments, the latter attenuating rapidly with depth. The paper presents the results of an extensive parametric study leading to a simplified formula for evaluating kinematic moments at the pile head in a two-layer soil profile.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
