Numerische Behandlung der Interaktionseffekte von erdbebenerregten, unverankerten Fluessigkeitsbehaeltern

This report deals with the computer-oriented simulation of the dynamic behavior of unanchored liquid filled storage tanks under strong earthquake excitations. The numerical model for the analysis of the coupled problem with the whole liquid-soil-structure interaction is investgated. Especially a nonlinear ringelement is developed to reproduce the uplifting phenomenon of unanchored tanks. The time dependent nonlinear equilibrium equations are solved with a combined incremental-iterative procedure. The described method enables to figure out the characteristic dynamic behavior of earthquake excited unanchored tanks. Moreover the significant influence factors are determined. (orig.)SIGLEAvailable from TIB Hannover: RR 275(1995,5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman