Research On Vibration Reduction Performance Of Super High-rise Structures With Viscous Connecting Beam Damper

This article summarizes the different types of replaceable coupling beams studied by scholars at home and abroad and their application progress.At present,most of the replaceable coupling beams need to be replaced after the earthquake to restore the function of the structure.In order to make the coupling beams continue to be used after the earthquake,viscous coupling beam dampers are designed.The vertical shear deformation of the coupling beam under earthquake action causes the viscous damper attached to the span of the coupling beam to generate relative vertical deformation and consume energy.The shear force is transmitted through the output of the damper to form a viscous damping coupling beam.In view of the existing problems of replaceable connecting beams.In order to better understand and study the seismic performance of the super highrise frame-core tube structure with viscous coupling beam dampers,the research team designed and produced four sheets with viscous coupling beam dampers Single-story steel frame.Among them,the viscous dampers of three specimens are arranged vertically,and the viscous dampers of the other specimen are arranged horizontally.The purpose is to solve the problem that the vertical arrangement of the viscous dampers is limited by space.Through dynamic cyclic loading test,the specimens of viscous coupling beam damper after loading were analyzed from different angles such as hysteretic performance and energy dissipation capacity.The test results show that the hysteresis curves of each specimen are very full,and the overall structure has better energy dissipation capacity.In this research group,a super-high-rise frame-core tube structure located in the seismic fortification intensity zone of 8 degrees is designed for energy dissipation and shock absorption by viscous coupling beam dampers.The ETABS software was used to analyze the elastic time history of the uncontrolled model and the controlled model under frequent earthquakes,compare the seismic response of the structure before and after the placement of the viscous coupling beam and analyze the energy dissipation performance of the viscous coupling beam And study the sensitive parameters that affect the viscous coupling beam damper.Perform the elastoplastic time-history analysis of the uncontrolled model and the controlled model through the Perform-3D software under the action of rare earthquakes,compare the seismic response of the structure before and after the placement of the viscous coupling beams and analyze the viscous coupling beam Energy consumption performance.The results show that compared with the uncontrolled model,the controlled model with the viscous coupling beam damper greatly reduces the maximum interlayer displacement angle,base shear force and overturning moment,indicating that the viscous coupling beam damper fully exerts energy consumption and reduction.The role of earthquake.On the basis of ensuring that the viscous coupling beam itself is not destroyed and the function is quickly restored,it can effectively protect the safety of the main structure and slow down or avoid plastic damage of the main structure.At the same time,the selection of the plane layout position,vertical layout position,and damper parameters has a greater impact on the damping effect of the frame-core tube structure with the viscous coupling beam damper.A reasonable selection of the parameters of the viscous damper can make The shock absorption performance is maximized.