Abstract
Seismic Analysis of Perfect and Imperfect Cylindrical Liquid Storage Tanks
Highlights
Liquid storage tanks are subjected to horizontal and vertical ground accelerations during earthquakes
This paper deals with the seismic buckling of steel tanks with fixed support subjected to the horizontal component of a real earthquake
Results show that the D/t ratio is an important parametric factor of the seismic buckling strength of the liquid-filled cylindrical tank
Summary
Abstract - This paper presents the behaviour and design guidelines of cylindrical steel liquid storage tanks subjected to various strong earthquake excitations. The authors aim to develop practical design equations and charts estimating the buckling strength of the cylindrical steel liquid-filled tanks subjected to seismic loads. Numerical analysis is used to evaluate the buckling strength of cylindrical steel liquid-filled tanks. Finite element analysis is performed using the commercial computer program ANSYS Both geometrically perfect and imperfect tanks are studied. According to the results of the parametric study of the perfect tanks, the buckling strength decreases significantly as the diameter-to-thickness ratio (D/t) increases, while it decreases slightly as the height-to-diameter ratio (H/D) increases. Design equations and design curves for the cylindrical steel liquid-filled tanks of various geometries subjected to different earthquakes are proposed and presented
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