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Response analysis of rigid structures rocking on viscoelastic foundation

journal contribution
posted on 04.01.2013 by Alessandro Palmeri, Nikos Makris
In this paper the rocking response of slender/rigid structures stepping on a viscoelastic foundation is revisited. The study examines in depth the motion of the system with a non-linear analysis that complements the linear analysis presented in the past by other investigators. The non-linear formulation combines the fully non-linear equations of motion together with the impulse-momentum equations during impacts. The study shows that the response of the rocking block depends on the size, shape and slenderness of the block, the stiffness and damping of the foundation and the energy loss during impact. The effect of the stiffness and damping of the foundation system along with the influence of the coefficient of restitution during impact is presented in rocking spectra in which the peak values of the response are compared with those of the rigid block rocking on a monolithic base. Various trends of the response are identified. For instance, less slender and smaller blocks have a tendency to separate easier, whereas the smaller the angle of slenderness, the less sensitive the response to the flexibility, damping and coefficient of restitution of the foundation.

History

School

  • Architecture, Building and Civil Engineering

Citation

PALMERI, A. and MAKRIS, N., 2008. Response analysis of rigid structures rocking on viscoelastic foundation. Earthquake Engineering and Structural Dynamics, 37 (7), pp. 1039 - 1063.

Publisher

© John Wiley & Sons, Ltd.

Version

AM (Accepted Manuscript)

Publication date

2008

Notes

Closed Access. This article was published in the journal, Earthquake Engineering and Structural Dynamics [© John Wiley & Sons, Ltd.] and the definitive version is available at: http://dx.doi.org/10.1002/eqe.800

ISSN

0098-8847

eISSN

1096-9845

Language

en

Exports