Shaking table test of combination isolation plate-shell integrated concrete liquid-storage structure

Abstract

In order to obtain the seismic performance of plate-shell integrated concrete liquid-storage structure (PSICLSS), a scaled test model was built for shaking table test. A combination isolation layer is proposed, the dynamic responses of non-isolation and combination isolation PSICLSS under unidirectional and bidirectional earthquake were tested. The results show that the combination isolation layer can change the spectral characteristic of the input acceleration, reduce the acceleration response and displacement of the structure, but it will increase the hydrodynamic pressure and liquid sloshing height. Under the action of earthquake, the liquid sloshing of combination isolation PSICLSS appears obvious nonlinear splash phenomenon. When considering the vertical earthquake, the horizontal acceleration response of PSICLSS and the liquid sloshing height change little, the peak hydrodynamic pressure changes significantly, and the peak position also changes. The maximum displacement of the isolation layer increases, but the residual displacement decreases.