Anti-wind Performance And Anti-seismic Performance Analysis Of Steel Frame-concrete Core Tube Composite Structural System

Steel frame-concrete core tube composite structure is sufficient utilization of their materialproperties of steel and concrete, combined use of the concrete core tube and the steel frame witharticulated or rigid connection, bearing most of the horizontal load by greater lateral stiffness ofthe concrete core tube, and higher material strength steel frame to withstand the vertical load.The ingenious combination of the two materials can meet the requirements of building functionalflexibility, and to avoid the disadvantages of a single structural system.In this paper, it is analysis to cooperate working performance of the steel frame-concretecore tube combination of structural system, and using the steel density column substitute theconcrete core tube to analysis the two structures for wind and seismic performance of thecomparative, finally, analysis the combination structure in different connectional system of thenodes under the rare earthquake seismic performance and structural stability.The main work and conclusions of this paper are as follows:1. Using finite element software analysis41layers steel frame-concrete core tube compositestructural systems coordinated working performance. According analysis to obtain that the steelframe part of the whole combinational structure has played a role in the second tract line ofdefense, and between them by a reasonable coordinated working to ensure the good performanceof the whole combinational structure. Concrete core tube structure is the main anti side forcecomponent, therefore, in the design and construction should be attention.2. Analysis the steel frame-concrete core tube combination structural system for wind load,comparative analysis obtain that the stiffness of the steel frame-concrete core tube compositestructural system is larger the steel frame-steel density column structural system, and stiffnesschange is more uniform; Using concrete core tube to coordinate peripheral steel frame column,which improves anti-pushover performance and anti-shear performance of whole compositestructure.3. Analysis the steel frame-concrete core tube combination structural system for modalanalysis and frequently occurred, rare earthquake response, comparative analysis show that thesteel frame-concrete core tube composite structural system seismic performance is moresuperior. 4. Analysis the steel frame-concrete core tube combination structural system in differentconnectional system of the four nodes under the rare earthquake seismic performance andstructural stability, data results show that the concrete core tube is main resistant-lateralcomponent in the whole composite structure, when meeting the standard regulations premise ofthe “High-rise building concrete structures technical regulations”, using beams and columnsrigid connection, beams and core tube articulated share horizontal shear is maximum, suggestedto use this new node connectional system on the practical engineering medium.