000021891 001__ 21891
000021891 005__ 20170622131310.0
000021891 04107 $$aeng
000021891 046__ $$k2017-06-15
000021891 100__ $$aGüler, Elif
000021891 24500 $$aSENSITIVITY OF THE SEISMIC PERFORMANCE OF LIQUID STORAGE TANKS WITH NONLINEAR ISOLATION SYSTEMS TO DEVIATIONS IN MECHANICAL CHARACTERISTICS OF THE SEISMIC ISOLATORS

000021891 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021891 260__ $$bNational Technical University of Athens, 2017
000021891 506__ $$arestricted
000021891 520__ $$2eng$$aLiquid storage tanks, one of the important components of industrial production, may be out of service for a temporary period of time or become completely unserviceable when subjected to large earthquake ground motions that may cause severe damages. Many studies in literature suggest seismic base isolation technique in protecting liquid storage tanks from the harmful effects of strong ground motions. And, the dynamic behaviors of these structural systems, which are composed of the sloshing of the fluid inside and the dynamic response of the tank itself, are directly dependent on the isolation system design. While seismic base isolation is an emerging successful earthquake resistant design method for liquid storage tanks, seismic performances of such structures may be affected negatively from potential deviations that may occur in the mechanical properties of the isolators from the nominal design values. Deviations may come into scene due to a variety of reasons such as the errors and/or uncertainties in the properties of the materials, dimensions of the elements, manufacturing methods, quality control and installation steps. In this paper, the effects of subject deviations in the mechanical characteristics of the seismic isolators on the seismic performances of liquid storage tanks equipped with nonlinear isolation systems are investigated under different historical earthquake records. To this end, sensitivity analyses are carried out by first conducting nonlinear time history analyses of a benchmark liquid storage tank mounted on a nonlinear isolation system in 3DBASIS-ME and then comparing its seismic responses including bearing displacements and sloshing displacements, which are obtained separately for nominal and deviated cases. In the context of this study, the characteristic isolator parameters including the yield force and the post-yield to pre-yield stiffness ratio are considered as the mechanical properties which may deviate from their nominal design values.

000021891 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021891 653__ $$aSeismic Isolation, Liquid Storage Tanks, Nonlinear Isolation System, Sensitivity Analysis, Seismic Performance.

000021891 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021891 720__ $$aGüler, Elif$$iAlhan, Cenk$$iGazi, Hatice
000021891 8560_ $$ffischerc@itam.cas.cz
000021891 8564_ $$s1006115$$uhttps://invenio.itam.cas.cz/record/21891/files/18237.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS18] Seismic isolation
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000021891 962__ $$r21500
000021891 980__ $$aPAPER