EXPERIMENTAL STUDY ON CONSTITUTIVE MODEL PARAMETERS OF NON-CONSOLIDATION TAPERED BEARING AND SEISMIC RESPONSE ANALYSIS OF STRUCTURES

Non-consolidation tapered bearing is designed for low-rise and multi-story buildings. The constitutive model consists of horizontal rubber-shearing phase, sliding friction phase and inclined rubber-compressing phase. The energy-consumption relationship between design parameters were discussed including the plate slope angle of inclined plane surface, the thickness of rubber sheet, horizontal loading displacement and vertical stress. 10 different sets of bearing based on the design parameters were studied in quasi-static experiments. The results indicated that the theoretical model is regarded as a good approximation. The relationship between design parameters and energy consumption was obtained. Furthermore, the limited aspect ratios of the bearing at different site were developed. The limited aspect ratio of the I, II, III and IV sites are 2.3, 1.7, 1.3 and 0.5, respectively. The finite element software was used to research the seismic response under seismic effect. The numerical results indicated that an isolated structure has a significant advantage on reducing superstructure response under different mechanical parameters.