Storage Tanks Under Earthquake Loading, a Case Study: Evaluation of Eurocode 8 Predictions

摘要

The behaviour under earthquake loading of an LNG (liquefied natural gas)-tank with a diameter of 75 meters and a height of 32 meters has been studied analytically and numerically. Design rules for achieving a safe design, provided by Eurocode 8 'Design of structures for earthquake resistance - Part 4 : silso, tanks and pipelines' (ENV 1998-4) were evaluated. Special attention was paid to the failure mechanism of elephant' foot buckling. The results gave rise to a proposal for modification of some application rules in ENV 1998-4.