000021827 001__ 21827
000021827 005__ 20170622131306.0
000021827 04107 $$aeng
000021827 046__ $$k2017-06-15
000021827 100__ $$aShahmohammadian, Amir
000021827 24500 $$aTORSIONAL BALANCE OF TWO-WAY ASYMMETRIC PLANS WITH OPTIMAL DISTRIBUTION OF VISCOUS DAMPERS

000021827 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021827 260__ $$bNational Technical University of Athens, 2017
000021827 506__ $$arestricted
000021827 520__ $$2eng$$aLateral-torsional coupling in asymmetric-plan buildings results in an increase of lateral displacement in the end-points of the building plan and therefore the production of disorderly deformation demand in seismically resistant frames. The demand for deformation in resistant frames depends on the relative magnitude of the plan translation and rotation and also the correlation between these two signals. Therefore, great correlation of small rotations with lateral displacement may result in considerably different deformations in the resistant frames of the structure’s two-edges. With regard to the inability to eliminate the asymmetric state due to various reasons such as architectural issues, in this study an attempt has been made to use supplemental dampers to decrease the lateral-torsional correlation of the plan displacement. This can result in a nearly uniform demand of deformation in seismically resistant frames. On this basis, using the concept of “torsional balance”, the optimized distribution of viscous dampers is determined for the decrease of this correlation by moving the “Empirical Center of Balance” (ECB) to the geometrical center of the structure. Which results in an equal mean-square-values of displacement in the edges of the plan. One-way and two-way mass asymmetry has been considered for torsional stiff and flexible structures and the optimal layout of dampers has been determined using the particle swarm optimization algorithm. The results show that the optimum center of viscous dampers depends on size of the mass eccentricity, uncoupled torsional-to-lateral frequency ratio and the amount of supplemental damping considered.

000021827 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021827 653__ $$aAsymmetric buildings, Torsional balance, Viscous dampers, Particle Swarm Optimization Algorithm

000021827 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021827 720__ $$aShahmohammadian, Amir$$iHosseini, Mir Hamid$$iMansoori, Mohammad Reza
000021827 8560_ $$ffischerc@itam.cas.cz
000021827 8564_ $$s1058867$$uhttps://invenio.itam.cas.cz/record/21827/files/18091.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS13] Optimum design and control in structural dynamics and earthquake engineering
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000021827 962__ $$r21500
000021827 980__ $$aPAPER