The Seismic Analysis Based On The Performance Seismic Design Of The Frame-Core Tube Structure

With the development of economic and technological progress, the development of high-rise building structure is fast. From the founding of new China to now, China’s high-rise buildings are springing up like bamboo shoots after a spring rain, such as the Shanghai Jinmao Tower, Shanghai World Financial Center, Shanghai Center Building, are well-known high-rise building. Highly modern high-rise buildings continue to refresh, more and more creative shape, form increasingly complex, more and more diverse functions, analysis and design of structures posed a serious challenge. Under wind loads, reducing one of the effective methods is to set up the structure of the horizontal displacement of the reinforcing layer; however, under the earthquake, by providing the reinforcing layer structure height direction greater stiffness and internal force of mutation, deformation of the main structure focus on strengthening layer at the joint action of gravity and horizontal loads, reinforcement layer near the upper and lower layers of stiffness mutation, it was easier to become a weak layer, it is not conducive to seismic.Reinforcing layer member mainly in two forms: horizontal cantilever and truss belts. Outriggers required level within the structure of symmetrical arrangement, the connection between the core and peripheral tube frame column; endless belt truss means are arranged in a circle along the perimeter truss structure, the belt reinforcing layer height generally high, it is equivalent to adding a "hoop" to the structure and increases the integrity of the structure. The main contents of this paper are as follows:1.Briefly introducing the characteristics and development process in the form of high-rise building structure, forecasting reinforcing layer structure will be one of the important development of high-rise buildings. Then the mechanism of reinforcement layer and reinforcing layer are covered in several programs set up this study.2.The research project for the object instance. In the configuration on the basis of the original model, simplified process, then get the model used in this study. In this paper, comparative analysis of a total of five programs, programs not provided a reinforcing layer, as a comparison; the remaining four schemes are set to different forms of reinforcement layer.3.Midas Building is a rise in recent years analysis software category, which includes the design and finite element analysis. In this paper, five kinds of programs Midas analyze modal response spectrum method, obtained five kinds of solutions each cycle, mass participation coefficient, story drift, drift and other data, a comprehensive comparison of these data lead to different optimization schemes inferiority.4.The EPDA of PKPM is designed entirely based on the spatial model, it can be used for elasto-plastic analysis. Finally, by the EPDA module five kinds of programs elastic and inelastic time history analysis, story drift, displacement layer, layer shear and other data, a comprehensive comparison of these data, the differences of different schemes are obtained, and compared with the results before using the Midas analysis, the conclusion is drawn.5.Analysis of conclusions of this paper, according to the actual engineering situation, put forward the corresponding measures to the structure design of the core tube with reinforced layer frame, and discusses the deficiency of this paper and the direction to be further studied in the future.