Research On Seismic Performance Of Core Tube Structure Of High-rise Building Frame

With less and less urban land resources,high-rise buildings are widely used in various fields of people's life.The structural forms of high-rise buildings are diverse,including frame structure,frame shear wall structure,frame-core tube structure,and tube within tube structure.As outer frame inner tube construction,frame-core tube structure is made up of the central core tube and peripheral framework,in which the central core tube is rounded by the elevator shaft,stairs,ventilation shaft,etc.As a common structure form in tall buildings,the seismic performance has been concerned by engineers.In this paper,the seismic performance of frame-core tube structure is analyzed by combining with the instance of a frame-core tube structure engineering in jiangxi province.The main content is as follows:1.Summarize the research status of frame-core tube structure at home and abroad,and put forward the research content of this paper;2.Introduce the theory and analysis software of seismic design in detail;3.Analyze the seismic performance of a frame core tube structure in Jiangxi Province in detail by the method of mode decomposition response spectrum and time history analysis;4.Study the influence of the changes of the parameters such as the hole ratio and the wall thickNess of the core tube,the overall concrete grade,the section size of the column and the beam,on the seismic performance of the structure by using the mode decomposition response spectrum method and the time history analysis method;5.Furthermore,analyze the elastic-plastic static and dynamic properties of the structure;6.Summarize the whole paper and put forward the future work direction.