Study On Seismic Performance Of Super High Rise Conversion Structure With Viscoelastic Dampers

Due to the rapid economic development, a variety of super high-rise more and more complex structures, it is important to improve the seismic performance of these complex structures. This paper converts super senior long-span structure in combination with viscoelastic dampers to form a typical energy damping device to study its seismic performance.Analysis of Energy Dissipation of super high-rise structures and large span conversion viscoelastic dampers were composed under the seismic action, focusing on seismic performance, which is the main purpose of this study. Seismic research now span convert large high-rise structures need for a new idea. The new architecture by setting viscoelastic dampers in conjunction with large span conversion super-tall structure is formed, which provided for the seismic design of a new idea, the seismic study of this architecture is still at a relatively early stage therefore this paper, the seismic performance of this new system in-depth study and exploration, seismic design of hope for the future to provide some reference value.The main contents of this paper are as follows:(1)On the basis of international and domestic experts and scholars on the viscoelastic dampers and a conversion layer structure has been studied, the system tells the connection viscoelastic dampers and super high-rise structure large span between conversion and its different in structure;(2)the model and mechanical properties of viscoelastic dampers detailed description of mechanics, theoretical analysis and research to derive the equations of motion super high-rise structures for large span conversion added viscoelastic dampers, and explains how to set sticky parameter elastic damper;(3)super-tall model of large-span conversion structure viscoelastic arranged in different positions structures results in different band viscoelastic dampers, the use of finite element software Midas / gen numerical analysis, were selected EL-Centro earthquake wave Taft and when seismic waves, elastic analysis in both history analysis of seismic waves;(4)Provided with the viscoelastic dampers to convert high-rise structure of large-span static nonlinear analysis, first analyze the impact on capacity spectrum stiffness parameters,and then analyzes the damping parameter changes affect demand for spectrum; by static push-over analysis studies comparing the results with a structure and a different structure under different loading patterns of comparative results in the same kind of loading mode,and then get the appropriate conclusions super tall structure with large span conversion viscoelastic dampers in rare earthquake under.Experimental results show that: In a multi earthquake and rare earthquake, through the setting viscoelastic dampers can significantly reduce the structural seismic response, and when viscoelastic dampers evenly arranged along each time, energy damping effect is more good.