Evaluating Large Aboveground Storage Tanks Subject to Seismic Loading, Part 1

Predicting the dynamic response of large, aboveground storage tanks exposed to seismic loading is complex. There are foundation-structure and fluid-structure interaction effects that can influence the overall tank behavior and possible failure modes. Additionally, local stresses at anchor bolt support chair
attachments and the shell-to-floor junction can be difficult to quantify without detailed finite element analysis (FEA). Often, performing explicit dynamic analysis with liquid sloshing effects can be time-consuming, expensive, and even impractical. The intent of this article is to summarize simplified analysis techniques that can be employed to evaluate aboveground storage tanks subject to seismic loading. This article summarizes the first portion of a two-part study. A summary of the second part of this work, which involves explicit dynamic analysis with fluid sloshing effects, will be published in the next volume of E²G Industry Insights