| At present, the laminated rubber bearings are often mounted on the top of the basement cantilever columns in most of projects in china and abroad, but due to various factors, the series of a laminated rubber isolator and cantilever column was rarely considered a as whole. Cantilever column that is the top corner at the bottom of laminated rubber bearing severely affect the whole system level recovery capabilities. This project has been in the actual application of the more common series isolation system, which was rarely seen corresponding to the mechanical analysis and deflection of the cantilever column and its angle into account. The main research content of this article:Structure vibration control is classified and explained and the current researching situation and the tendency of base-isolated control system in china and abroad are mainly detailed. Lastly, questions such as proposing of the problem, current research-situation and the meanings of the problem are discussed.According to the simplify model of the series isolation system proposed Zhou Xiyuan, etc this article separately analyse the rubber bearing respectively. First we solved the corresponding critical angle of rubber bearing on the critical load time, then analysed the cantilever column from the series analysis. When the rubber bearings in a large deformation, the cantilever column was subject to the eccentric force and the P-â–³effect make the large deflection of cantilever column greaten. Equivalented cantilever column under homogeneous, we can solve rotation angle of the cantilever column at the bottom by considering P-â–³effect. The cantilever column top critical rotation angle could be solved by reinforced concrete cantilever column with the yield bending moment.We analyzed laminated rubber bearing the different stiffness of tandem column system and he same cross-section columns in series vertical load imposed by different isolation system by analysis finite element software ANSYS.
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