000022320 001__ 22320
000022320 005__ 20170622150007.0
000022320 04107 $$aeng
000022320 046__ $$k2015-05-25
000022320 100__ $$aKamaris, George
000022320 24500 $$aCOLLAPSE RISK EVALUATION OF SELF-CENTERING STEEL MRFS WITH VISCOUS DAMPERS IN NEAR-FAULT REGIONS

000022320 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022320 260__ $$bNational Technical University of Athens, 2015
000022320 506__ $$arestricted
000022320 520__ $$2eng$$aThis paper presents an evaluation of the seismic collapse risk of self-centering moment-resisting frames (SC-MRFs) with viscous dampers located in near-fault regions. This evaluation is based on the comparison of different designs of a prototype steel building using four lateral load resisting frames: 1) conventional moment-resisting frames (MRFs), 2) MRFs with viscous dampers, 3) SC-MRFs and 4) steel SC-MRFs with viscous dampers. The frames are modeled in OpenSees where material and geometrical nonlinearities are taken into account as well as cyclic strength and stiffness degradation. A database of 91 near-fault, pulselike ground motions with varying pulse periods is employed for the nonlinear dynamic analyses. Collapse resistance of the frames is evaluated through incremental dynamic analysis (IDA). The results of the IDA are combined with probabilistic seismic hazard analysis models that account for near-fault directivity to assess collapse risk of the structures. Results show that the predicted collapse capacity is affected by the pulse period of the near-fault ground motions and highlight that self-centering connections can significantly improve the collapse resistance of conventional MRFs. Finally, it is shown that supplemental damping provides superior collapse resistance for all frames.

000022320 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022320 653__ $$aSelf-centering, Steel frames, Dampers, Collapse Risk, Near-fault, Hazard analysis.

000022320 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022320 720__ $$aKamaris, George$$iGalasso, Carmine$$iKaravasilis, Theodore$$iTzimas, Angelos
000022320 8560_ $$ffischerc@itam.cas.cz
000022320 8564_ $$s640289$$uhttps://invenio.itam.cas.cz/record/22320/files/C460.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022320 962__ $$r22030
000022320 980__ $$aPAPER