000011475 001__ 11475
000011475 005__ 20141205155914.0
000011475 04107 $$aeng
000011475 046__ $$k2008-10-12
000011475 100__ $$aRoussis , Panayiotis C.
000011475 24500 $$aBase-Isolation Technology for Earthquake Protection of Art Objects

000011475 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011475 260__ $$b
000011475 506__ $$arestricted
000011475 520__ $$2eng$$aIn this paper the dynamic response of base-isolated block-like slender objects, such as statues, subjected to horizontal ground excitation is investigated. The structural model employed consists of a rigid block supported on a rigid base, beneath which the isolation system is accommodated. Assuming no sliding of the block relative to the supporting base, when subjected to ground excitation the system may exhibit two possible patterns of motion, namely pure translation, in which the system in its entirety oscillates horizontally (1 degree-of-freedom response), and rocking, in which the rigid block pivots on its edges with respect to the horizontally-moving base (2 degree-of-freedom response). The dynamic response of the system is strongly affected by the occurrence of impact between the block and the horizontally-moving base, as impact can modify not only the energy but also the degrees of freedom of the system by virtue of the discontinuity introduced in the response. Therefore, the critical role of impact in the dynamics of the system necessitates a rigorous formulation of the impact problem. In this study, a model governing impact from the rocking mode is derived from first principles using classical impact theory. Numerical results are obtained via an ad hoc computational scheme developed to determine the response of the system under horizontal ground excitation.

000011475 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011475 653__ $$abase isolation, art objects, earthquake, rigid block

000011475 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011475 720__ $$aRoussis , Panayiotis C.$$iPavlou, Eleni A.$$iPisiara, Elisavet C.
000011475 8560_ $$ffischerc@itam.cas.cz
000011475 8564_ $$s323595$$uhttps://invenio.itam.cas.cz/record/11475/files/11-0162.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 11-0162.
000011475 962__ $$r9324
000011475 980__ $$aPAPER