Seismic response of base isolated tanks considering soil structure interaction effects
In the conventional method, the structure is designed to increase its strength by assuming higher seismic forces when subjected to earthquakes. Higher seismic force requires larger structural components which leads to higher mass which in turn attracts a significant amount of seismic forces. Hence, this approach does not ensure required safety during strong earthquake motions. Alternative techniques have been developed to protect the tank during earthquake. One such approach is base isolation technique. However, in almost all the analysis, simplified model was used assuming the tank wall as rigid. In addition, the tank base is assumed to be fixed in most of the studies. However, the response of the liquid filled tank depends on the soil condition also. Even though there are literature available to evaluate the effect of SSI on the dynamic response of storage tanks, there are no attempts to estimate the response of liquid filled tanks isolated at base using rubber bearing or friction pendulum system by considering the effect of SSI and FSI. In the proposed work, base isolated tank will be modelled by considering the effect of both liquid and soil.
M, CHAITHRA, "Seismic response of base isolated tanks considering soil structure interaction effects" (2022). Technical Collection. 83.