AUTHORS: Kamila Kotrasová, Eva Kormaníková

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ABSTRACT: Liquid storage cylindrical containers are built for storing a variety of liquids. The seismic behavior of tanks is, however, quite complex problem. The interaction of tank and liquid can be simplified with the concept of generalized single-degree-of-freedom systems representing the convective, rigid impulsive and flexible impulsive vibration modes. This paper presents the theoretical background for cylindrical tanks fixed to rigid foundation under earthquake loading, describing the fluid hydrodynamic pressure and the seismic response of liquid storage tank. The base shears, the bending moment and overturning moment are calculated by using the response spectra for risk region of Slovakia, B category of subsoil. The seismic analysis was made on the ground supported cylindrical concrete tanks with considering of partial fulfillments.

KEYWORDS: Container, fluid, earthquake, pressure, shear, moment

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