A parametric study of seismic response in anchored steel tanks with endurance time method

In this paper, the seismic response of anchored cylindrical steel tankswith various dimensional parameters has been investigated by endurance time methodconsidering uid-structure interaction eects. various response quantities, such asstresses and displacements, have been evaluated by subjecting tanks to specially designedintensifying accelerograms and their performance is judged based on their response atpredened level(s) of dynamic excitation. it is shown that et analysis can reliably predictthe result of ground motion time history analysis in all seven tank models studied. in fourof the tanks in which height of the shell and the level of uid is the same, the variation ofsignicant parameters with height to diameter ratio is discussed. the reliability of the etmethod in predicting the response of models considering nonlinear material and geometricnonlinearity is also investigated using a limited number of models. in general, results byendurance time method, while entailing highly reduced computational demand, appear tobe reasonably consistent with those from ground motions in anchored steel tanks analysisconsidering uid-structure interaction.