Stability of elevated liquid-filled conical tanks under seismic loading, Part I-Theory

摘要: Conical steel shells are widely used as water containments for elevated tanks. However, the current codes design of structures do not specify any procedure handling seismic such structures. In this paper, a numerical model is developed studying stability liquid-filled conical tanks subjected to loading. The involves previously formulated consistent shell element with geometric and material non-linearities included. A boundary formulation derived obtain hydrodynamic pressure resulting from both horizontal vertical components motion acting on tank which prevented rocking. leads fluid added-mass matrix incorporated perform non-linear dynamic analysis ground motion. Although, was vessels, it general can be easily modified study revolution accuracy verified by performing free vibration cylindrical comparing results those available in literature. © 1997 John Wiley & Sons, Ltd.