TY - JOUR

T1 - Assessment of Lumped-Parameter Models for Rigid Footings

A1 - Andersen,Lars

AU - Andersen,Lars

PB - Pergamon

PY - 2010

Y1 - 2010

N2 - The quality of consistent lumped-parameter models of rigid footings is examined. Emphasis is put on the maximum response during excitation and the geometrical damping related to free vibrations. The optimal order of a lumped-parameter model is determined for each degree of freedom, i.e. horizontal and vertical translations as well as torsion and rocking, and the necessity of coupling between horizontal sliding and rocking is discussed. Most of the analyses are carried out for hexagonal footings; but in order to generalise the conclusions to a broader variety of footings, comparisons are made with the response of circular and square foundations.

AB - The quality of consistent lumped-parameter models of rigid footings is examined. Emphasis is put on the maximum response during excitation and the geometrical damping related to free vibrations. The optimal order of a lumped-parameter model is determined for each degree of freedom, i.e. horizontal and vertical translations as well as torsion and rocking, and the necessity of coupling between horizontal sliding and rocking is discussed. Most of the analyses are carried out for hexagonal footings; but in order to generalise the conclusions to a broader variety of footings, comparisons are made with the response of circular and square foundations.

KW - Foundations

KW - Soil dynamics

KW - Wave propagation

KW - Vibrations

KW - Wind turbines

KW - Foundations

KW - Soil dynamics

KW - Wave propagation

KW - Vibrations

KW - Vind turbines

U2 - 10.1016/j.compstruc.2008.10.007

DO - 10.1016/j.compstruc.2008.10.007

JO - Computers & Structures

JF - Computers & Structures

SN - 0045-7949

IS - 23-24

VL - 88

SP - 1333

EP - 1347

ER -