000018503 001__ 18503
000018503 005__ 20170118182225.0
000018503 04107 $$aeng
000018503 046__ $$k2017-01-09
000018503 100__ $$aAlıcı, Fırat Soner
000018503 24500 $$aGeneralized Pushover Analysis for Torsionally Coupled Systems

000018503 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018503 260__ $$b
000018503 506__ $$arestricted
000018503 520__ $$2eng$$aGeneralized pushover analysis procedure that was previously formulated on 2D planar frames is extended to 3D systems with torsional coupling in the presented study. The instantaneous force distribution acting on the system when the interstory drift at a story reaches its maximum value during seismic response is defined as the generalized force distribution. This force distribution is then expressed in terms of combinations of modal forces. Modal contributions to the generalized force vectors are calculated by a modal scaling rule which is based on the complete quadratic combination. Generalized forces are applied to the mass centers of each story incrementally for producing nonlinear static response. Maximum response quantities are then obtained when the individual frames attain their own target interstory drift values in each story. Finally, internal forces and deformations of the structural members are compiled through an envelope algorithm; registered as the inelastic seismic response of the asymmetric-plan structure. The developed procedure is tested on a plan-asymmetric, torsionally coupled eight-story structure under a set of ground motion records which are employed without any modification. Performance of the procedure is assessed by comparing the results with those obtained from nonlinear time history analysis. Seismic response parameters such as interstory drifts and plastic rotations are presented for selected ground motions as well as mean results calculated for the ground motion set. The method is deemed successful in predicting the torsionally coupled inelastic response of 3D systems in terms of deformation and force demands.

000018503 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018503 653__ $$amulti-mode pushover; torsional coupling; generalized forces; target drift; asymmetric structures

000018503 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018503 720__ $$aAlıcı, Fırat Soner$$iSucuoğlu, Haluk$$iKaatsız, Kaan
000018503 8560_ $$ffischerc@itam.cas.cz
000018503 8564_ $$s706830$$uhttps://invenio.itam.cas.cz/record/18503/files/1599.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1599.
000018503 962__ $$r16048
000018503 980__ $$aPAPER