Study on seismic response control of large scale sliding base-isolated liquid storage tank

The Bouc-Wen model is adopted to simulate the non linear hysteretic characteristics of force-displacement relationship for sliding bearing. The seismic response characteristics of large scale sliding base-isolated storage tank at different sites are investigated. The influence of friction coefficient, restoring stiffness and earthquake intensity on the response of base-isolated tank is analyzed. The result indicates that large scale of sliding base-isolated is unsuitable to be built at site I and it has great isolation effect at site II. The amplitude of sloshing height can increase remarkably at site IV, moreover, larger bearing displacement should be reduced by increasing friction coefficient and restoring stiffness of sliding bearing. The restoring frequency can suppress sliding resident displacement effectively. The stronger intensity of ground motion is, the better isolation effect of large scale sliding base-isolated tank has.