000019393 001__ 19393
000019393 005__ 20170118182316.0
000019393 04107 $$aeng
000019393 046__ $$k2017-01-09
000019393 100__ $$aLopez-Almansa, Francisco
000019393 24500 $$aImportance of Non-Simulated Failure Modes in Incremental Dynamic Analysis (Ida) of Non-Ductile RC Frames

000019393 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019393 260__ $$b
000019393 506__ $$arestricted
000019393 520__ $$2eng$$aNonlinear dynamic analysis of reinforced concrete structures requires a thorough understanding of behavior of structural elements for all levels of performance, especially collapse. Main reason is that reinforced concrete is a mixed material having complicated nonlinear behavior, each element having several coupled degradation modes that influence the entire structure and can change its collapse mechanism. Therefore, using oversimplified models can lead to misleading results. This paper presents a numerical study on the relation among the non-simulated failure modes of the structural elements of non-ductile RC frames and their collapse mechanism; this study reports on the so-called “Structural resurrection” phenomenon in Incremental Dynamic Analysis (IDA). It consists in some structures collapsing under a certain accelerogram, although resisting the same accelerogram but scaled by a factor bigger than unity. This fact was reported, among other examples, in the Van Nuys Hotel; this work focusses on a RC frame of that building. Structural behavior is described with OpenSEES code accounting for flexural, shear and axial failure modes of structural members. Obtained results show that simplified models grossly overestimate the building capacity since several hidden failure modes are only detected by more complex formulations. The so-called structural resurrection might be merely due to the use of too simple models.

000019393 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019393 653__ $$aStructural resurrection, non-ductile RC frames, collapse mechanism, axial failure, shear failure

000019393 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019393 720__ $$aLopez-Almansa, Francisco$$iAlfarah, Bashar$$iOller, Sergio
000019393 8560_ $$ffischerc@itam.cas.cz
000019393 8564_ $$s934662$$uhttps://invenio.itam.cas.cz/record/19393/files/3538.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3538.
000019393 962__ $$r16048
000019393 980__ $$aPAPER