A simplified seismic analysis of rigid base liquid storage tanks under vertical exicitation with soil-structure interaction

摘要: Abstract A study is carried out to evaluate dynamic response of an elastic circular cylindrical tank having a rigid base under vertical excitation taking into consideration the interaction with foundation soil. At first, soil represented by frequency-independent parameters. Two coupled differential equations, governing motion shell and base, are solved using step integration technique. The hydrodynamic pressures, acting on derived from velocity potential function which satisfies Laplace equation appropriate boundary conditions. simplified model stiff compated that obtained elsewhere check accuracy present model. Reasonable agreement found between maximum wall displacement associated stresses those more elaborate reduces than calculated assumption parametric examine effects height-to-radius ratio tank, shear wave conducted. Varieties models used assess sensitivity variation in Finally, representative solution for problem frequency domain where appropriately modelled frequency-dependent transfer functions relative evaluated, comparison solutions made.