000021618 001__ 21618
000021618 005__ 20170622131255.0
000021618 04107 $$aeng
000021618 046__ $$k2017-06-15
000021618 100__ $$aMavronicola, Eftychia
000021618 24500 $$aEFFECT OF GROUND MOTION DIRECTIONALITY ON SEISMIC RESPONSE OF BASE-ISOLATED BUILDINGS CONSIDERING POUNDING TO ADJACENT STRUCTURES

000021618 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021618 260__ $$bNational Technical University of Athens, 2017
000021618 506__ $$arestricted
000021618 520__ $$2eng$$aBase isolation has proven an effective strategy to minimize structural and nonstructural damage, prevent functionality disruption and protect sensitive equipment in buildings even under strong ground motions. However, structural pounding with the surrounding moat wall and/or adjacent buildings may induce local and even severe damages to baseisolated structures. This study utilizes a computational methodology that enables the investigation of poundings in a three-dimensional (3D) domain, while considering the arbitrary location of contact points and the geometry at the vicinity of impact; it aims to investigate the circumstances under which spatial pounding may occur and quantify their effect on the response of the base-isolated structure. Given that the seismic response of base-isolated structures subjected to strong ground motions depends on the excitation characteristics, namely frequency content and horizontal ground motion directionality, the sensitivity of the calculated nonlinear dynamic response of a 3-story base-isolated building during pounding against other fixed-supported buildings is thoroughly and parametrically examined. Numerous nonlinear time history analyses are performed on the structural model using selected pairs of recorded horizontal ground-motion orthogonal components. Records are rotated to 73 different horizontal angles of incidence with respect to the building’s structural axes in the range of 0 to 360 degrees. The influence of different parameters, such as the type and the location of the adjacent-fixed supported buildings, is also investigated. The significant influences of (a) the excitation angle and (b) the structural configuration arrangement on the overall peak seismic response are highlighted and quantified.

000021618 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021618 653__ $$aground motion directionality, structural impacts, base-isolated building, adjacent structures.

000021618 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021618 720__ $$aMavronicola, Eftychia$$iKomodromos, Petros
000021618 8560_ $$ffischerc@itam.cas.cz
000021618 8564_ $$s749153$$uhttps://invenio.itam.cas.cz/record/21618/files/17252.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS10] Advances in Numerical Methods for Linear and Non-Linear Dynamics and Wave Propagation
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000021618 962__ $$r21500
000021618 980__ $$aPAPER