000013671 001__ 13671
000013671 005__ 20161114170127.0
000013671 04107 $$aeng
000013671 046__ $$k2011-05-25
000013671 100__ $$aPappa, P.
000013671 24500 $$aOn the Seismic Behaviour and Design of Liquid Storage Tanks

000013671 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013671 260__ $$bNational Technical University of Athens, 2011
000013671 506__ $$arestricted
000013671 520__ $$2eng$$aThe paper examines some special issues on the structural behaviour of uprightcylindrical liquid storage tanks, which are widely used in industrial facilities and for water storage. Two main design standards are considered: EN 1998-4, a relatively new standard, and Appendix E of API 650, which has been through substantial amendments and revisions in its new version (11th edition, 2007). There are significant differences between the two specifications, which are due to the fact that there exist several controversial issues on this subject, open to further research. These issues are (a) the number of modes necessary to estimate accurately the convective seismic force due to the hydrodynamic behaviour of the liquid containment; (b) the appropriate combination of the impulsive and the convective component of seismic force; (c) the uplifting behaviour of unanchored tanks, with emphasis on the base plate behaviour and the increase of meridional compression; (d) the choice of an appropriate reduction (behaviour) factor for calculating both the impulsive and the convective force; (e) the calculation of hydrodynamic hoop stresses due to liquid hydrodynamic motion; (f) the design of tanks against buckling at the top due to liquid sloshing; (g) the importance of nonlinear wave sloshing effects. The present paper is aimed at addressing the above issues based mainly on numerical simulations. To simulate the tank shell and its structural behaviour, general-purpose finite element software ABAQUS is employed, whereas to examine hydrodynamic effects, an inhouse numerical technique is developed. Existing data from previous investigations are also considered. The results are aimed at better understanding of liquid storage tank seismic behaviour, bridging the gap between the two major design standards (EN 1998-4 and API 650Appendix E), towards safer seismic design of industrial facilities.

000013671 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013671 653__ $$aliquid storage tank, seismic design, sloshing, finite elements, shell buckling.

000013671 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013671 720__ $$aPappa, P.$$iVasilikis, D.$$iVazouras, P.$$iKaramanos, S.
000013671 8560_ $$ffischerc@itam.cas.cz
000013671 8564_ $$s2313607$$uhttp://invenio.itam.cas.cz/record/13671/files/479.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 23 Seismic Analysis and Design of Industrial Facilities and Pipelines.
000013671 962__ $$r13401
000013671 980__ $$aPAPER