Abstract
SUMMARY Seismic base isolation of ground supported cylindrical liquid-storage tanks is proposed by disconnecting the wall of the tank from the base plate and supporting it on a ring of horizontally flexible bearings; the base plate is supported directly on the ground. The gap between the wall and the base plate is closed with a flexible membrane, which prevents the loss of fluid from the tank and allows the tank wall to move freely in the horizontal direction. The e⁄ect of isolation on both the impulsive and the convective (sloshing) responses of the liquid is examined for two steel tanks—one broad and one slender. It is shown that isolation can reduce dramatically the hydrodynamic base shears, overturning moments, and axial compressive stresses in the tank wall without significantly increasing the vertical displacements of the liquid surface due to sloshing. Since the weight supported by the bearings is small compared to the total liquid weight, the bearings in slender tanks experience a net tensile force during strong shaking. ( 1997 by John Wiley & Sons, Ltd. Earthquake Engng. Struct. Dyn., 26, 839—847 (1997)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
