000011339 001__ 11339
000011339 005__ 20141205155901.0
000011339 04107 $$aeng
000011339 046__ $$k2008-10-12
000011339 100__ $$aPettinga, Didier
000011339 24500 $$aPredicting Inelastic Torsional Response with the Inclusion of Dynamic Rotational Stiffness

000011339 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011339 260__ $$b
000011339 506__ $$arestricted
000011339 520__ $$2eng$$aInherent to the development of performance-based seismic design and assessment techniques, is the need to adequately predict the inelastic displacements of structures. To date, research has provided a range of prediction approaches based on 2 and 3-dimensional representations. While the 2-D response can often be adequately assessed for design using simplified hand-predictions, the 3-D cases have tended to rely on push-over techniques that do not capture the effects of the rotational inertia on the diaphragm twist that develops in asymmetric structures. This paper presents the basis of a new approach for estimating, by hand calculation, the expected maximum torsional response of buildings with in-plan asymmetry. Fundamental to a prediction procedure is the quantification of the apparent twist restraint that is a result of the rotational mass inertia of the floor diaphragm. The derivation of this dynamic torsional restraint is presented here. For a series of simple structures subjected to sinusoidal pulse inputs, comparative results between recorded inelastic time-history and predicted response are presented. For realistic eccentricity cases the predictions are shown to provide sufficiently accurate estimates of response for use in design.

000011339 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011339 653__ $$aInelastic torsion, energy balance, capacity design, yield displacement, displacement profile.

000011339 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011339 720__ $$aPettinga, Didier$$iChristopoulos, Constantin$$iPampanin, Stefano
000011339 8560_ $$ffischerc@itam.cas.cz
000011339 8564_ $$s218822$$uhttps://invenio.itam.cas.cz/record/11339/files/05-01-0214.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0214.
000011339 962__ $$r9324
000011339 980__ $$aPAPER