000021801 001__ 21801
000021801 005__ 20170622131305.0
000021801 04107 $$aeng
000021801 046__ $$k2017-06-15
000021801 100__ $$aStratan, Aurel
000021801 24500 $$aDESIGN CRITERIA AND MODELLING OF RE-CENTRING DUAL ECCENTRICALLY BRACED FRAMES

000021801 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021801 260__ $$bNational Technical University of Athens, 2017
000021801 506__ $$arestricted
000021801 520__ $$2eng$$aConventional seismic design philosophy is based on dissipative response, which implicitly accepts damage of the structure under the design earthquake and leads to significant economic losses. Repair of the structure is often impeded by the permanent (residual) drifts of the structure. The repair costs and downtime of a structure hit by an earthquake can be significantly reduced by adopting removable dissipative members and providing the structure with re-centring capability. The paper presents application of this concept to a dual structure, obtained by combining steel eccentrically braced frames (EBFs) with removable bolted links and moment resisting frames (MRFs). The solution was validated experimentally using component and system tests. Structural design of re-centring eccentrically braced frames can be performed using conventional code-based approach, but some additional criteria need to be considered. Among these are (1) providing moment resisting frames with a minimum strength in order to obtain a dual frame; (2) checking the re-centring capability by keeping the moment-resisting frames in the elastic range and constraining plastic deformations to replaceable dissipative members; (3) choosing an appropriate behavior factor and (4) designing the connections of replaceable links to allow re-placement. Moreover, due to limitations of simplified code-based approach, nonlinear pushover or time-history analyses are recommended to validate the intended structural performance. Modelling approach of the system for nonlinear static and dynamic analysis is presented, and the results of seismic performance assessment are presented.

000021801 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021801 653__ $$are-centring, eccentrically braced frames, replaceable links.

000021801 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021801 720__ $$aStratan, Aurel$$iDubina, Dan$$iChesoan, Adriana
000021801 8560_ $$ffischerc@itam.cas.cz
000021801 8564_ $$s1545911$$uhttps://invenio.itam.cas.cz/record/21801/files/17978.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS09] WORKSHOP OF THE INNOSEIS PROJECT- Innovative anti-seismic devices for buildings
.
000021801 962__ $$r21500
000021801 980__ $$aPAPER