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Approximation of Uplift of Flat-Bottom Cylindrical Tanks and Effects of Out-of-Plane Deformation of Cylindrical Shell on it

[+] Author Affiliations
Tomoyo Taniguchi

Tottori University, Tottori, Japan

Teruhiro Nakashima

JIP Techno Science Corporation, Osaka, Japan

Daisuke Okui

Kawasaki Heavy Industries, Ltd., Kobe, Japan

Paper No. PVP2015-45083, pp. V008T08A011; 6 pages
  • ASME 2015 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Boston, Massachusetts, USA, July 19–23, 2015
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5703-8
  • Copyright © 2015 by ASME


For the unanchored flat-bottom cylindrical tanks located in the seismic prone area, uplift of the tank bottom plate is inevitable. Besides the work of Nakashima, effects of out-of-plane deformation of the cylindrical shell on uplift of the tank bottom plate have been paid little attention. In analyzing uplift of the tank bottom plate, for design purpose in particular, its effects should be included. First, employing a cylindrical shell tanks with multistage rigid or elastic stiffeners, their uplift responses to the horizontal sinusoidal base acceleration are compared to highlight effects of out-of-plane deformation on uplift of the tank bottom plate. Next, employing the numerical results of the cylindrical shell tank with multistage rigid stiffeners, analytical accuracy of the simplified calculation for evaluating the angular acceleration accompanying the tank rock motion is examined.

Copyright © 2015 by ASME



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