000018792 001__ 18792
000018792 005__ 20170118182241.0
000018792 04107 $$aeng
000018792 046__ $$k2017-01-09
000018792 100__ $$aMykoniou, Konstantinos
000018792 24500 $$aAnalysis of Base Isolated Liquid Storage Tanks With 3D Fluid Structure Interaction Analysis as Well as Simplified Approaches

000018792 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018792 260__ $$b
000018792 506__ $$arestricted
000018792 520__ $$2eng$$aTanks are preferably designed, for cost-saving reasons, as circular, cylindrical, thin-walled shells. In case of seismic excitation, these constructions are highly vulnerable to stability failures. An earthquake-resistant design of rigidly supported tanks for high seismic loading demands, however, uneconomic wall thicknesses. A cost-effective alternative can be provided by base isolation systems. In this paper, a simplified seismic design procedure for base isolated tanks is introduced, by appropriately modifying the standard mechanical model for flexible, rigidly supported tanks. The non-linear behavior of conventional base isolation systems becomes an integral part of a proposed simplified process, which enables the assessment of the reduced hydrodynamic forces acting on the tank walls and the corresponding stress distribution. The impulsive and convective actions of the liquid are taken into account. The validity of this approach is evaluated by employing a non-linear fluid-structure interaction algorithm of finite element method. Special focus is placed on the boundary conditions imposed from the base isolation and the resulting hydrodynamic pressures. Both horizontal and vertical component of ground motion are considered in order to study the principal effects of the base isolation on the pressure distribution of the tank walls. The induced rocking effects associated with elastomeric bearings are discussed. The results manifest that base isolated tanks can be designed for seismic loads by means of the proposed procedure with sufficient accuracy, allowing to dispense with numerically expensive techniques.

000018792 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018792 653__ $$aliquid storage tank; seismic isolation; elastomeric bearing; friction pendulum bearing; simplified approach

000018792 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018792 720__ $$aMykoniou, Konstantinos$$iButenweg, Christoph$$iRosin, Julia
000018792 8560_ $$ffischerc@itam.cas.cz
000018792 8564_ $$s987989$$uhttps://invenio.itam.cas.cz/record/18792/files/2246.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2246.
000018792 962__ $$r16048
000018792 980__ $$aPAPER