The Setting And Seismic Performance Study Of The Frame-tube Structure With Horizontal Entity Boom Strengthen Story

Based on the framework of a layer of 45 core tube structure as an example,set horizontal Boom level entity beam strengthen layer,junction current status of application of the strengthening layer frame-tube structure and literature,based on the original theory of strengthened layer,numerical calculation model is established by using finite element analysis software ANSYS,for structure finite element analysis and elastic time history analysis.Research on wind load and earthquake force under the action of strengthening the position of the layer, quantity and level of the influence of the stiffness of frame-tube structure,change the setting way of strengthen layer on natural vibration period,the floor displacement,the influence of the interlayer displacement Angle and floor shear.The results show that:the position of the strengthen layer,Frame-tube structure set a horizontal boom strengthened layer should be in the relatively near a total height of 0.5 times;Set up by two or more levels boom entity beam strengthen layer of uniform along the building height set but not include the top floor;The number of on strengthen layer,Set up two or three horizontal boom entity beam strengthen layer is more appropriate,Too much to lateral displacement of the structure and strengthen layer control effect weakened gradually.Doesn't conform to the principle of economy.On strengthen layer stiffness,Set the "limited stiffness" strengthen layer can effectively avoid the structure layer near the weak layer.Using ANSYS finite element analysis software and PKPM-SATWE wall model design software for a certain frame tube structure modal analysis and dynamic elastic time history analysis,Through the comparative of different software on the same model,analyzing the cycle and the vertex displacement value and the maximum horizontal displacement as the breakthrough point,put forward suitable for the engineering practice and more simple and reasonable way of modeling and analysis method.The results show that:Under the premise of meet the precision requirement in the calculation,SATWE modeling way is simple,structural analysis of high efficiency,dozens of times faster than ANSYS calculation efficiency,Greatly shorten the design time.