Full?scale shaking table test and numerical modeling of a 3000?liter legged storage tank isolated with a vertical rocking isolation system

This paper presents the numerical and experimental evaluation of a vertical-rocking isolation (VRI). is done by 1-D shaking table tests performed on full-scale legged storage tank 3000-liters capacity its representation through simple yet representative rigid lumped-mass model approach. The system setup consisted four ISO3D-2G devices, each one placed leg tank, which uses high-damping natural rubber to generate restoring dissipative forces. device vertically flexible laterally rigid, enabling mechanism rocking motion tank. experiments were carried out using three white noise for identification 17 ground motions inputs validation. measured variables included lateral acceleration displacement vertical rotational behavior interface. results showed vertical-rotational coupled fundamental mode that highly dependent amplitude deformation, with period varying from 0.5 more than 1 s, depending intensity motion. maximum at top remained below 13 cm total accelerations nearly 0.3 g, both Peak Ground Acceleration (PGA) values ranging 0.8 g. mean predicted simplified errors less 10% 21% displacements accelerations, respectively. Finally, show isolated structures can be models reasonable development design guidelines equations VRI systems possible.