Analysis On The Seismic Behavior Of Medium High-rise Steel Structrual Residence With Dual-Lateral Resistant System

Steel building known as the 21st century "green buildings." Compared with traditional concrete structure, it has a light weight, seismic performance, easy post-disaster rehabilitation, basic low cost, recyclable and renewable materials, energy conservation, provincial land, water and so on. As a green building, in recent years, steel frame residential building has been the Ministry of Construction as a priority to promote the project. Social reform open and economic development,especially large increase of steel production, improvement and application of new style building material and building technology,the engineering practice empirical accumulated recent years,all above established foundation for the application of the steel structure systems and created a favorable environment for developing the industry.Purity steel frame structure system can provide for the construction a large interior space, and the stiffness of the various parts of the structure is relatively uniform. Steel frame structure with greater ductility, since the vibration cycle is long, on the few low-rise low-rise buildings, the frame structure is a kind of economic rationality, using a wide range of structural systems, but the steel frame structure, the lateral stiffness of the small , lateral displacement of large, easily lead to the destruction of non-structural elements, so the construction of steel frame structural system should not be too high. Support for structural resistance to lateral forces have made great contributions, cost is also more economical, structural works fast, is ideal for small high-rise residential architecture. And steel frame - eccentrically braced and steel frame - centersupport structure system compared to steel frame - eccentrically braced high-rise residential structure in a small system can not give full play to its advantages, the anti-side capacity and steel frame - center support more or less, so the exact speaking, the steel frame - center support structure system is ideal for small high-rise residential architecture.Using SAP2000 finite elements software calculates respectively the mode of vibration and frequency of the eleven-storey residential building of steel frame,steel frame- center braced and steel frame- eccentrically braced. Inputting ElCentro seismic wave,then analyzed the dynamic response of the eleven-storey residential building of the three structural systems,compare the relation of the coping displacement,relative storm displacement,resist-side stiffness with the space location of the appearance time in different system and the change rule of which in the same system.By a series of analyses,the thesis makes a useful researches and discusseson which kind of structural system can be adopted for high-rise steel structure.The results have some guidance sense and reference value to impeldevelopment and perfection of steel structure residential building.