Energy Method for Base Uplifting Analysis of Liquid-Storage Tanks

[+] Author and Article Information
P. K. Malhotra

California Strong Motion Instrumentation Program, 801 K Street, MS 13-35, Sacramento, CA 95814-3531

A. S. Veletsos

Rice University, Houston, TX 77251

J. Pressure Vessel Technol 118(3), 332-335 (Aug 01, 1996) (4 pages) doi:10.1115/1.2842196 History: Received January 30, 1995; Revised November 08, 1995; Online February 11, 2008


A solution, based on Ritz energy method, is presented for the uplifting analysis of a uniformly loaded semi-infinite beam supported on a rigid foundation. Motivated by a need to understand the effects of earthquake-induced base uplifting in unanchored liquid-storage tanks, the solution accounts for the nonlinearities associated with large displacements and material yielding in the base plate, and considers the constraining action of the tank wall. The results are in close agreement with those from the “exact” analysis.

Copyright © 1996 by The American Society of Mechanical Engineers
Topics: Storage , Earthquakes
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