000013076 001__ 13076
000013076 005__ 20161114160326.0
000013076 04107 $$aeng
000013076 046__ $$k2009-06-22
000013076 100__ $$aSweedan A. M., I.
000013076 24500 $$aEvaluation of the seismic response of conical steel tanks using the equivalent model technique

000013076 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013076 260__ $$bNational Technical University of Athens, 2009
000013076 506__ $$arestricted
000013076 520__ $$2eng$$aA typical elevated tank consists of two main components, the containment vessel and the supporting shaft. Vessels are commonly constructed in a truncated conical-shape. This paper focuses on pedestal-type tanks where the steel conical vessels are supported by reinforced concrete shafts with hollow circular cross-sections. Current design standards do not provide direct procedure to estimate the forces acting on conical vessels when the tanks are subjected to earthquake excitation. Most of the codes of practice account for the seismic forces only in the design of the shaft assuming a full participation of the fluid mass which is not usually the case. The current study aims at assessing the effect of the above mentioned limitation on the seismic analysis and design of elevated conical tanks. A coupled finite-boundary element formulation is adopted to develop a simplified equivalent model for the evaluation of seismically-induced forces in liquidfilled conical vessels. The proposed model is utilized to assess seismic forces induced in the main structural components of several elevated conical tanks. Analyzed structures are assumed to be located at three different sites to account for different seismic activities in Canada. The dynamicbased stresses are evaluated for both the containment conical vessel and the supporting shaft. Seismically-induced stresses are then compared to the equivalent static stresses induced in the shaft showing a conservative design. Seismic stresses developed at the base of the conical vessel are found to significantly increase those stresses associated with the hydrostatic pressure of the contained fluid. In general, the study highlights the significance of considering the seismic forces for the analysis and design of liquid-filled conical steel tanks.

000013076 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013076 653__ $$aConical Shells, Tanks, Seismic Response, Earthquake Excitation, Equivalent Model. Abstract. A typical elevated tank consists of two main components, the containment vessel and the supporting shaft. Vessels are commonly constructed in a truncated conical-shape. This paper focuses on pedestal-type tanks where the steel conical vessels are supported by reinforced concrete shafts with hollow circular cross-sections. Current design standards do not provide direct procedure to estimate the forces acting on conical vessels when the tanks are subjected to earthquake excitation. Most of the codes of practice account for the seismic forces only in the design of the shaft assuming a full participation of the fluid mass which is not usually the case. The current study aims at assessing the effect of the above mentioned limitation on the seismic analysis and design of elevated conical tanks. A coupled finite-boundary element formulation is adopted to develop a simplified equivalent model for the evaluation of seismically-induced forces in liquidfilled conical vessels. The proposed model is utilized to assess seismic forces induced in the main structural components of several elevated conical tanks. Analyzed structures are assumed to be located at three different sites to account for different seismic activities in Canada. The dynamicbased stresses are evaluated for both the containment conical vessel and the supporting shaft. Seismically-induced stresses are then compared to the equivalent static stresses induced in the shaft showing a conservative design. Seismic stresses developed at the base of the conical vessel are found to significantly increase those stresses associated with the hydrostatic pressure of the contained fluid. In general, the study highlights the significance of considering the seismic forces for the analysis and design of liquid-filled conical steel tanks.

000013076 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013076 720__ $$aSweedan A. M., I.$$iEl Damatty A., A.
000013076 8560_ $$ffischerc@itam.cas.cz
000013076 8564_ $$s877096$$uhttps://invenio.itam.cas.cz/record/13076/files/CD102.pdf$$yOriginal version of the author's contribution as presented on CD, section: Fluid-structure-soil interaction.
000013076 962__ $$r13074
000013076 980__ $$aPAPER