000010931 001__ 10931
000010931 005__ 20141205155818.0
000010931 04107 $$aeng
000010931 046__ $$k2008-10-12
000010931 100__ $$aMazza, Fabio
000010931 24500 $$aDisplacement-Based Design of Dissipative Braces at a Given Performance Level of a Framed Building

000010931 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010931 260__ $$b
000010931 506__ $$arestricted
000010931 520__ $$2eng$$aThe insertion of dissipative braces proves to be very effective in order to enhance the performance of a framed building under seismic loads. For a widespread application of this technique, practical design procedures are needed. In this paper a design procedure aiming to proportion damped braces in order to attain, for a specific level of seismic intensity, a designated performance level of the structure is proposed. Exactly, a proportional stiffness criterion, which assumes the elastic lateral storey-stiffness due to the braces proportional to that of the unbraced frame, is combined with the Direct Displacement-Based Design, in which the design starts from a target deformation. To check the reliability of the design procedure, a six-storey reinforced concrete (r.c.) plane frame, representative of a medium-rise symmetric framed building, is considered as a test structure, which primarily designed in a medium-risk seismic region, has to be retrofitted as in a high-risk seismic region by insertion of braces equipped with either hysteretic dampers or viscoelastic ones. Nonlinear dynamic analyses are carried out, under real and artificially generated ground motions, by a step-by-step procedure. Frame members and hysteretic dampers are idealized by bilinear models, while the viscoelastic dampers are idealized by a six-element generalized model describing the variation of the mechanical properties depending on the frequency, at a given temperature.

000010931 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010931 653__ $$aFramed building, damped braces, performance based design, displacement based design, nonlinear seismic analysis

000010931 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010931 720__ $$aMazza, Fabio$$iVulcano, Alfonso
000010931 8560_ $$ffischerc@itam.cas.cz
000010931 8564_ $$s237147$$uhttps://invenio.itam.cas.cz/record/10931/files/14-0053.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0053.
000010931 962__ $$r9324
000010931 980__ $$aPAPER