The Seismic Response Of The Irregular Large Chassis Frame Structure Based On The Changes Of Isolation Layer Position

In recent years, the research and application of base isolation technology in isolation system have been greatly promoted. But with the complexity of the modern architectural style and the limitations of the isolation layer's location, there are limit the scope of the base isolation technology. As a new type of isolation technology, the story isolation technology is put forward based on the base isolation technology, which makes up the limitation and extension of the base isolation technology, and broadens the application range of the isolation technology. Compared with the traditional seismic technology,seismic isolation technology is still in its infancy, the theoretical system is not yet mature.And the damping effect of story seismic isolation technology with isolation layer layout and structure change, therefore, this paper makes a limited study.This paper, the research and analysis of the influence of the position change of the seismic isolation device on the seismic response of irregular structure model is studied in this paper. First of all, this paper briefly introduces the work principle of base isolation and the principle of layer isolation are studied, the corresponding mechanical model is established, and the corresponding differential equations are derived.Then, the finite element analysis software of SAP2000 is used to establish the numerical model of the frame structure with five kinds of structures,Based on the engineering example, the results show that the five kinds of structural models of the floor acceleration, displacement and the shear layer force between the two indicators are compared and analyzed.Comparative study of the structure under seismic wave damping effect,the data of the five structural models are summarized and compared, and the limitations of the study and the research of the law are given.Research shows that compared with the traditional seismic structure, the other four kinds of seismic isolation structure model has the effect of damping.The isolation device can absorb the energy of the earthquake and the barrier of the earthquake force, so as to satisfy the seismic mitigation effect.In the model of four kinds of isolation structure, the lower the position of the base isolation bearing, the better isolation and damping effect, the best effect of the base isolation.