Dynamics Performance Research On Basic Friction-sliding Isolation Structure

In many of basic isolation technology at home and abroad, the friction-slidingisolation technology is one of the older and more mature technology which is developedand applied. Its mitigation characteristics of applicable economy and reliable safety, issuitable for our more earthquake and the low level of economy national conditions. Dueto the research objects on basic friction-sliding isolation is the overall structure mostly,but it researches less on a single component of the structure, and the damage ofstructure comes from the failure of the key frame member in the final analysis. So theresearch on the effect for the basic friction-sliding isolation to the key frame memberhas a certain significance.In this thesis, based on the introduction of isolation principle and form for the basicfriction-sliding isolation, the equations of the dynamic response are established andsolved when the isolation layer is in different motion state. And it studies the isolationeffects on the key frame member (i.e. Angle column) of the building. The results of thestudy show that: under the action of the double level rare occurrence earthquake,compared with the ordinary earthquake resistant structure, the reactions of angle columneach layer, such as the peak of the acceleration, internal force and deformation aredecreased significantly in the basic friction-sliding isolation structure, and it makes theforce performance improved greatly.In addition, in this paper, The effect of isolation about the angle column each layerin the basic friction-sliding isolation structure is also analyzed by changing the frictioncoefficients of slipping isolation layer. The analysis results show that: with the increaseof friction coefficient of sliding isolation layer, the isolation effect of angle column eachlayer will be reduced; But with the decrease of the friction coefficient, the maximum value of slippage will increase again in sliding isolation layer. Therefore, the frictioncoefficient of sliding isolation layer should be selected reasonably.