Remarks on the load behavior of container structures under extreme dynamic actions

Tanks for the storage of hazardous liquids embody a considerable risk potential. This applies to liquefied gas and mineral oil tanks as well as to tanks in which radioactive liquids are stored. For such structures it may become necessary to take account of exceptional loads and actions due to earthquake, the impact of colliding solid objects, or pressure shock waves. Qualitative and quantitative information on the behaviour of tanks under extreme dynamic actions is given, enabling the geometric and material properties of these structures and the distribution of the dynamic actions in space and time to be assessed. For estimating the effects of earthquake the results of the principal methods of calculation (response spectrum and time history analysis respectively) are compared and evaluated. Dynamic load factors for collision impact effects are determined and different pulse sequence patterns for pressure shock waves are examined. (orig.)