Seismic performance of liquid storage tanks

State-of-the-Art Review on the Seismic Performance Assessment of On-Ground Steel Cylindrical Tanks

“…Therefore, considering the shell deformability might change the impulsive pressure distribution along the tank height compared to rigid tanks. However, such differences are insignificant where the content's height-todiameter ratio is less than 1 [10,16]. In other words, shell flexibility effects are negligible in comparatively broad tanks, especially thicker ones, but they are significant in notably slender ones [10,18].…”

“…However, such differences are insignificant where the content's height-todiameter ratio is less than 1 [10,16]. In other words, shell flexibility effects are negligible in comparatively broad tanks, especially thicker ones, but they are significant in notably slender ones [10,18].…”

“…Even mechanically anchored tanks may experience uplift because of anchor failure or inappropriate performance of their foundations. The tank uplift is not a failure mode for an unanchored tank, but it would be a reason for several failure modes in liquid storage tanks [10]. When a tank experiences base uplifting, its contact between the shell and foundation reduces.…”

“…Spritzer and Guzey [80] employed nonlinear FE analysis to estimate the uplift of cylindrical roofless tanks on flexible foundations. Razzaghi and Eshghi [81,82] classified unanchored tanks based on their uplift behavior and demonstrated that the uplifting response of tanks with H/D < 0.5 notably differs from the others. They categorized such tanks into broad tank classes and showed that despite slender tanks, their uplift potential remarkably decreases when the relative amount of content reduces.…”

“…The hydrodynamic pressure exerted from impulsive and convective liquid along the shell height generates an overturning moment in the tank bottom. As a result of the overturning moment, the tank tends to rock [10].…”