000012276 001__ 12276
000012276 005__ 20141205160037.0
000012276 04107 $$aeng
000012276 046__ $$k2008-10-12
000012276 100__ $$aZeris, C. A.
000012276 24500 $$aResponse Spectra of RC Rocking Structures on Inelastic Base Floor Support

000012276 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012276 260__ $$b
000012276 506__ $$arestricted
000012276 520__ $$2eng$$aSingle degree of freedom inelastic response spectra are re-evaluated for a class of simplified reinforced concrete (RC) building oscillator models that exhibit both rocking and lateral response and behave as rigid blocks above the ground story; rocking and lateral deformation at the ground level are resisted through RC columns with axial – rocking resistance interaction. This type of building oscillators are encountered in a wide variety of irregular RC building systems, either intentionally discontinuous (open ground floor for shops and parking) or, unintentionally discontinuous, due to the inclusion of stiff infill panels above the base floor. The inelastic response spectra of the simplified rocking models are evaluated using code OpenSees (developed at PEER) and are compared to lateral only inelastic spectra as traditionally assumed in design. Comparisons of lateral ductility and inelastic demand at the base columns are presented, as a function of the system’s parameters, namely: natural periods TL, Tθ and normalized resistances ηL, ηθ (yield strength normalized by the corresponding peak inertial force). It is shown that for a certain period range, the presence of rocking, coupled with the inelastic lateral response, increases both the transverse ductility demand as well as the axial resisting forces at the ground floor, compared to those obtained from conventional elastic analysis procedures.

000012276 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012276 653__ $$aRocking, Inelastic Spectra, Reinforced Concrete, Seismic Design, Soft Storey, Ductility.

000012276 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012276 720__ $$aZeris, C. A.$$iGiannitsas, P.$$iAlexandropoulos, K.
000012276 8560_ $$ffischerc@itam.cas.cz
000012276 8564_ $$s383336$$uhttps://invenio.itam.cas.cz/record/12276/files/08-02-0074.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 08-02-0074.
000012276 962__ $$r9324
000012276 980__ $$aPAPER