![]() The results demonstrate that the proposed method is an effective way to reduce sloshing force demand. The response parameters of the tank is developed in terms of wall pressure, wave height, base shear, and overturning moment in cylindrical tanks of different sizes with and without air cushions under the far field and near source ground motions. While in tank without air cushion, the boundary condition adjacent to tank wall is kinematic with no control on the wall pressure, in the proposed method this boundary condition becomes kinetic, enabling control of dynamic fluid pressure on the tank walls. ![]() The paper investigates the effect of air cushion system on the seismic response of the cylindrical water storage tanks. This is done by employing air cushions adjacent to the wall. Under the external excitations, such as the movement of the vehicle or the seismic force on the storage tank. This paper introduces a novel method to reduce seismic demand on tank’s wall without structural intervention. water towers and petroleum cylindrical tanks. (a) What is the water pressure on the bottom of the tank (b) What is the average force on the bottom a) P. One of the common ways of retrofit include some structural change in the lateral load resisting system that could be expensive and requires the tank to be out of service for relatively long time. A cylindrical water tank 40 ft high and 20 ft in diameter is filled with water with a density of 61.9 lbm/ft. ![]() Water storage tanks not designed explicitly for seismic loading could require retrofit.
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