000019299 001__ 19299
000019299 005__ 20170118182309.0
000019299 04107 $$aeng
000019299 046__ $$k2017-01-09
000019299 100__ $$aNangullasmu, Horacio
000019299 24500 $$aImportance of Ductile Confinement in Reinforced Concrete Frames With Structural Fuses

000019299 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019299 260__ $$b
000019299 506__ $$arestricted
000019299 520__ $$2eng$$aIn this paper the authors summarize the results obtained, from static nonlinear analyses (pushover), for reinforced concrete intermediate moment-resisting frames (RC-IMRFs), designed with minimum ductile confinement requirements, and with hysteretic energy dissipation devices (HEDDs) mounted in chevron steel bracing which work as structural fuses. Moment-resisting frames, ranged from 5 to 25 stories, were designed using diverse stiffness ratios between the different systems (frames, bracings and hysteretic devices). The first one is the stiffness ratio related between the frame system and the whole structure (α). The second stiffness ratio is between the HEDD and the supporting brace (β). A post to pre yielding stiffness ratio (k2/kEL) of 5% for the hysteretic devices was also considered, based on experimental results. Furthermore, the angle of inclination of the chevron braces with respect to the horizontal axis was taken into account from typical story heights and bay widths used into the Mexican construction practice. The structural behavior of RC-IMRFs with these extra requirements is much improved with respect of the typical detailing established in Mexican codes for RC-IMRFs, favoring satisfactory design mechanisms where the energy dissipation devices develop most of the nonlinearity of the system (structural fuse), while the RC frames remain elastic or develop only incipient yielding exclusively for beams. Also, updated seismic global design parameters are proposed related with the ductility and overstrength that such structures could develop.

000019299 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019299 653__ $$aEnergy dissipation; metallic fuses; seismic control response; reinforced concrete frames; seismic parameters

000019299 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019299 720__ $$aNangullasmu, Horacio$$iTena, Arturo
000019299 8560_ $$ffischerc@itam.cas.cz
000019299 8564_ $$s1320013$$uhttps://invenio.itam.cas.cz/record/19299/files/3327.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3327.
000019299 962__ $$r16048
000019299 980__ $$aPAPER