Research On Energy Dissipation And Seismic Reduction Of Technology High-rise Frame-supported Shear Wall Structure

The high-rise frame-supported shear wall structure has diversified use functions and spatial layout,and has become a popular form of high-rise buildings nowadays.However,this structure belongs to a high-rise structure system with discontinuous vertical lateral force-resistant members,and it is prone to problems of weak layers and insufficient seismic performance.For this reason,this article applies energy dissipation and seismic reduction technology to high-rise frame-supported shear wall structures.By changing the type of dampers and adjusting the position and support method of the dampers,the damping effect is studied,and the problem of insufficient seismic performance of the structure is solved,The main work and conclusions are as follows:（1）Combining engineering cases,use ETABS software to establish a high-rise frame-supported shear wall structure model,and then conduct modal analysis,response spectrum analysis,and time history analysis to study the vibration characteristics,displacement and internal force changes of the structure.The analysis results show that:the vibration characteristics of the structure are reasonable;the third floor（frame-supported floor）has the largest displacement angle between floors;the floor displacement,the displacement angle between floors and the floor shear force of the transfer floor are obviously abrupt.（2）Based on the analysis results of the original structure,the viscous fluid dampers（VFD）and buckling restrained braces（BRB）are respectively arranged in the high-rise frame-supported shear wall structure,and the corresponding energy dissipation structure model is established,and then the modal is performed Analysis and time history analysis.Finally,based on the results of the analysis,four damping schemes with mixed VFD and BRB layout in the structure were designed to study the influence of different types of dampers on the damping performance of high-rise frame-supported shear wall structures.（3）Based on the position and arrangement of the dampers,six damping schemes were designed to study the influence of the position of the dampers on the damping performance of the high-rise frame-supported shear wall structure.The analysis results show that:the floor displacement and the inter-story displacement angle are the control targets,and the dampers are arranged close to the center of the floor stiffness and the decentralized arrangement is the best when the damping effect is the best;the base shear force is the control target,The damping effect is best when the dampers are arranged far away from the center of the floor stiffness and are arranged in a centralized manner.（4）Based on the damper support method,design three damping schemes to study the influence of the damper support method on the damping performance of the high-rise frame-supported shear wall structure.The analysis results show that:the floor displacement and the displacement angle between floors are the control targets,and the "inverted V"-shaped support method has the best shock absorption effect;the floor shear and the base shear are the control targets,and the unidirectional diagonal bracing is adopted.The shock absorption effect is best when arranged.