Earthquake Response of Deformable Liquid Storage Tanks

Abstract

A method for analyzing the earthquake response of deformable, cylindrical liquid storage tanks is presented. The method is based on superposition of the free lateral vibrational modes obtained by a finite-element approach and a boundary solution technique. The accuracy of such modes has been confirmed by vibration tests of full-scale tanks. Special attention is given to the cos θ-type modes for which there is a single cosine wave of deflection in the circumferential direction. The response of deformable tanks to known ground motions is then compared with that of similar rigid tanks to assess the influence of wall flexibility on their seismic behavior. In addition, detailed numerical examples are presented to illustrate the variation of the seismic response of two different classes of tanks, namely, “tall” and “broad” tanks. Finally, the significance of the cos nθ-type modes in the earthquake response analysis of irregular tanks is briefly discussed.

Hydroelastic Viscous Oscillations in a Circular Cylindrical Container With an Elastic Cover

“…It is, of course, mandatory to know the magnitude of the coupled frequencies. The "rst research activity in this area in recent years, involving a lot of experiments and analyses (Miles 1958;Lindholm et al 1962;Baron & Skalak 1962;Chu 1963;Saleme & Liber 1965;Tsui & Small 1968;Bhuta et al 1964;Bhuta & Koval 1964;Yamaki et al 1984;Bauer et al 1968aBauer et al , b, 1972Bauer & Siekmann 1969Bauer 1970Bauer , 1973Lakis & Paidoussis 1971;Stillman 1973;Jain 1974;Nash et al 1980;Haroun & Housner 1981;Balendra et al 1982) on cylindrical tanks partially "lled with frictionless liquid, emphasizes the importance of such hydroelastic investigations. Similar investigations have been performed for rectangular containers with an elastic liquid surface cover (Bauer 1981).…”

Free-Vibration Analysis of Liquid-Filled Tank With Baffles

“…Haroun and Housner [5] had presented the results on the free lateral vibrations of ground-supported cylindrical liquid storage tanks. They had carried out both theoretical analysis and experimental investigation.…”

Simplified analytical methods for the crashworthiness and the seismic design of lock gates

“…Some references dealing with this topic are available in the literature, the oldest being probably the one published by Haroun and Housner [68]. However, this paper is still quite interesting because it provides a clear summary of the method.…”