Abstract
Dynamics of a full-scale tank station yard, which consists of several in-ground tanks and soil foundation, is computationally simulated by using 3D nonlinear finite element analysis, and the mutual interaction of some adjacent tanks and the seismic response accelerogram at sites are compared with onsite measurements for verification. It is confirmed by using a confinement-dependent soil constitutive model, detailed ground boring data and the one for multi-directional cracked concrete that the coupled tank and soil foundation model of full 3D extent brings about realistic and reasonable simulation. The group effect of tanks is found to cause complex ovalling deformation of each. Further, safety assessment of group tanks is conducted based upon the verification of the ultimate limit state which is codified in the structural performance code for practice, and the structural safety is verified with reasonable safety margins.
