Research On Shaking Table For The Effect Of Bearing Radio To Composite Isolation System

This article uses rubber isolation bearings and sliding isolation bearings to form a new kind of structure——composite isolation system. It not only gathers the merits of the two isolation bearings, but also avoids the demerits of its components. The reasonable parameters of two kinds bearing can make a better isolation effect. And, to this composite isolation system, through model test and finite element analysis, this thesis make further understanding about the parameters's influence to composite isolation structure, such as the mechanics of isolation beating and the number of two kinds isolation bearing.In this paper, based on the shaking table test, friction bearing radio which is one of the most important parameters of the composite isolation system was researched. As is shown in the test figures, friction bearing radio plays a key role in the composite isolation system. With the rational value of the radio, the composite isolation system is more effective in reducing seismic response than the rubber isolation bearing one, from which can we see the superiority of it.This text made a research analysis of a six–layer parallel composite isolation system masonry building by finite-element method. The building is composite isolation system composed of the rubber isolation bearing and the silde isolation bearing. The contrast of the time history analysis results of fundation-fixed system and the parallel composite isolation system prove that this isolation system can reduce the seismic response of upper structures and enhance the aseismic capability of the buildings.According to the shaking table test and the analysis for composite isolation structure, the influence for structure dynamic response and isolation properties by different isolation layouts is further understood. The analysis theory of composite isolation structure is verified and developed.