Based On SMA Smart Isolation Bearing Layer Interval Structure Time History Analysis

Earthquake disasters caused incalculable influence to human life,with the progress of science and technology,human struggle and earthquake disasters means continuous improvement.Among them,the isolation technology is to resist seismic action,to ensure the safety of human life and property of important technical means.Isolation technology mainly includes the base isolation and shock layer spacing.Many buildings of isolation technology In the domestic and abroad,it seems,is mostly accomplished through the base isolation,but with the deepening of the research and application,the disadvantage of base isolation technology is becoming more and more obvious,to some extent,limits the development of shock-isolation technology.And layer interval seismic technology with its own unique advantages,to some extent compensate for the limitations of base isolation in engineering application.In this paper,there is an overview of the layer structure's development status and working mechanism,establishing the system layer structure between the dynamic responses of the equation and solve.Most isolation structure with laminated rubber bearing as isolation device,but the laminated rubber bearing in the application has some obvious flaws,such as low horizontal stiffness,the deformation recovery ability etc.SMA as a kind of new intelligent material,the use of the shape memory properties and super elastic characteristics,can make up for the inadequacy of the laminated rubber bearing.The SMA wire arrangement around common laminated rubber bearing,design a new energy dissipation device:SMA-smart isolation bearing.This paper analyzed the working principle of the SMA smart isolation bearings,based on SMA smart isolation bearing base-isolated structure dynamic response equations and to solve.Composed of SMA smart isolation bearing isolation layer set up in different floors of the frame structure location and interval of structure dynamic response analysis for different layer,getting the following conclusions:1.Analyzed the performance characteristics of different isolation device,on the working principle of the SMA smart isolation bearings were analyzed,and compared the advantages and characteristic of its application in engineering.2.Using finite element software to simulate frame structure,compared with traditional structure,layer spacing structure can effectively extend the natural vibration period of buildings,the structure deformation is mainly focused on the isolation layer,thus inhibiting the structure transfer horizontal seismic action,and reduce seismic displacement response of the structure.3.Set the isolation layer respectively in different position of the frame structure,the comparative analysis of base isolation structure and different layer spacing structure dynamic response under seismic action.The low isolation layer set,the earthquake response of the whole structure is smaller,the better the damping effect.