000020040 001__ 20040
000020040 005__ 20170118182352.0
000020040 04107 $$aeng
000020040 046__ $$k2017-01-09
000020040 100__ $$aShahini, Marzie
000020040 24500 $$aAnalytical Study on Collapse-Resisting Capacity of Vertically Irregular Steel Moment Frames

000020040 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020040 260__ $$b
000020040 506__ $$arestricted
000020040 520__ $$2eng$$aThe present study investigates the collapse potential of vertical irregular moment-frame system based on the performance based plastic design methodology (PBPD). The well-known method uses the input energy as well as the plastic energy capacity of a building to design the yielding members so that the favorable yield mechanisms reach. Various low-rise to high-rise steel framing are considered as case study. Steel beam–column members of these case studies are proportioned by the plastic energy based method and by the current elastic design method. In order to evaluate the capability of the PBPD to collapse prevention, key structural performance parameters for detailed steel moment framings in terms of maximum/mean inter-story drift ratios, residual drift ratios, and plastic hinge rotations are computed by nonlinear history analysis and then results are compared to the acceptance criteria recommended by the TBI Guidelines as well as the methodology reported in FEMA P695. The comparison show that Performance based plastic design methodology is able to meet collapse margin which is a highest favorable mechanism of the tall vertical geometric irregular building whereas the current code-specified requirements are not practically fully adequate to satisfy the expected seismic behavior of high irregular buildings specifically under the maximum considered earthquake hazard level. In addition, according the controlling criteria reported in TBI, two steel frames that proportioned by the PBPD method, is subjected to a set of ground motions with incremental intensities from maximum considered earthquake hazard level to the early collapse level to estimate a safety margin against lifethreatening collapse. The results exhibit that structural performance for each ground motion favorably shows safe margin against collapse as the maximum IDRs obtained from each records do not exceed 4.5%. In other words, Structural acceptance criteria based on the requirements of TBI Guidelines, for MCE hazard level, in terms of maximum/mean IDRs, RDRs and plastic rotations as local parameters are reasonably satisfied.

000020040 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020040 653__ $$aPerformance Based Plastic Design; high-rise moment resisting setback frame; collapse assessments, the energy balance concept, vertical irregularity.

000020040 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020040 720__ $$aShahini, Marzie$$iMirghaderi, R.$$iDavidson, Paul
000020040 8560_ $$ffischerc@itam.cas.cz
000020040 8564_ $$s1458585$$uhttp://invenio.itam.cas.cz/record/20040/files/4984.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4984.
000020040 962__ $$r16048
000020040 980__ $$aPAPER