000021788 001__ 21788
000021788 005__ 20170622131305.0
000021788 04107 $$aeng
000021788 046__ $$k2017-06-15
000021788 100__ $$aKarayannis, Christos G.
000021788 24500 $$aINTER-STORY POUNDING AND TORSIONAL EFFECT DUE TO INTERACTION BETWEEN ADJACENT MULTISTORY RC BUILDINGS

000021788 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021788 260__ $$bNational Technical University of Athens, 2017
000021788 506__ $$arestricted
000021788 520__ $$2eng$$aThe influence of the structural pounding on the seismic behaviour of reinforced concrete structures designed to EC2 and EC8 with non-equal story heights is investigated. In these cases the slabs of the diaphragms of the short stiffer structure hit the columns of the other adjacent structure at points within their deformable heights. Further it is quite usual seismically induced oscillations of a structure in a block of buildings in city center to be partly restrained in lateral displacements and therefore torsional behaviour to be introduced during an earthquake excitation. In this work the case of an 8-story reinforced concrete building that suffers inter-story pounding in a non-symmetric way is studied. Pounding occurs only in one (case 1) or in two (case 2) columns of the structure whereas the other columns are free to move without restrictions and therefore a torsional behavior is produced. The slabs of the short stiff structure hit the columns of an 8-story frame structure at a height equal to 2/3 of their deformable length. Nonlinear dynamic step-by-step analysis and special purpose elements are employed for the needs of this study. Pounding cases with torsional effect between structures with non-equal story levels and different total heights for three excitations are studied and results in terms of displacements, torsional rotations, shear forces, ductility requirements are presented and commented. The results clearly show that high capacity requirements in terms of torsional moments and column shear strength are developed due to the asymmetric inter-story pounding. Furthermore from the results it can also be deduced that the columns that suffer the hit develop high shear requirements that exceed the available capacity during the step-by-step seismic response of the structures.

000021788 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021788 653__ $$aInter-story pounding, asymmetric structural pounding, multistory reinforced concrete structures, nonlinear dynamics analysis, earthquake engineering.

000021788 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021788 720__ $$aKarayannis, Christos G.$$iNaoum, Maria C.
000021788 8560_ $$ffischerc@itam.cas.cz
000021788 8564_ $$s5568878$$uhttps://invenio.itam.cas.cz/record/21788/files/17929.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS05] Dynamics of coupled problems
.
000021788 962__ $$r21500
000021788 980__ $$aPAPER