000011155 001__ 11155
000011155 005__ 20141205155841.0
000011155 04107 $$aeng
000011155 046__ $$k2008-10-12
000011155 100__ $$aNekooei, M.
000011155 24500 $$aSpectral Investigation on the Seismic Behaviour of Vertical Mass Isolated Structures Against Earthquake

000011155 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011155 260__ $$b
000011155 506__ $$arestricted
000011155 520__ $$2eng$$aMost of the new techniques in seismic design of structures are based on changing the dynamic characteristics of buildings to receive less earthquake input force and energy and to dissipate the energy with lower damage and deformation in structural components of the system. Mass isolation of structures is one of this techniques that focuses on the mass of the structure as the main target for seismic isolation and reducing earthquake effects on buildings In this paper, the seismic behaviour of vertical mass isolated structures against the earthquake is studied. The analytical model used for this investigation is a dual mass-spring model which is an extended form of the three element Maxwell model. In this study, the ability of mass isolation techniques in reducing earthquake effects on buildings with two approaches, parametric and numerical approaches, is shown. In the parametric approach, by definition an isolation factor for structure and determination the dynamic characteristics of system, the relative optimum value of the isolator damping coefficient is obtained. The results provide an insight on role of relative stiffness and mass ratio of the two subsystems. Finally, in the numerical approach, the spectral responses of these structures due to the earthquake are investigated. The results show a noticeable decrease in earthquake input force to vertical mass isolated structures in comparison with non-isolated structures.

000011155 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011155 653__ $$aSeismic isolation, Mass isolation, Isolation factor, Damping factor

000011155 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011155 720__ $$aNekooei, M.$$iZiyaeifar, M.
000011155 8560_ $$ffischerc@itam.cas.cz
000011155 8564_ $$s148178$$uhttps://invenio.itam.cas.cz/record/11155/files/05-06-0174.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0174.
000011155 962__ $$r9324
000011155 980__ $$aPAPER