Influence Analysis On Seismic Performance Of Frame-Tube Structure With Different SRC Core Tube Type

Due to the rapid development of the national economy and the improvement of engineering technology,Chinese super high-rise buildings have sprung up,and the SRC composite structure is widely used in super high-rise buildings.Compared with the pure steel structure,the SRC structure is more dominant in terms of fire resistance,durability and improvement of local buckling;compared with the concrete structure,the bearing capacity and ductility of the SRC structure are obviously superior,and the SRC structure can speed up the construction progress.Therefore,it can be seen that the influence of the type of SRC shear wall core cylinder on the seismic performance of the frame-tube structure has practical significance for practical engineering applications.This paper mainly uses a frame-tube structure in Guangzhou as the engineering example basis and uses Midas Gen software to carry out related modeling.Doing the calculation and comparative analysis results Forof different types shear wall core tube structure,the main research work is as follows:1.Make the outer frame column and its column spacing be the same,and changing the type of core tube of the original structure,and compare the analysis of seismic performance under horizontal multiple earthquakes,such as floor lateral displacement,vertex displacement,maximum interlayer displacement Angle and so on.2.By changing the thickness of the tube under each type of core tube,firstly compared the seismic performance of different tube thickness structures of the same type is,and then compared all the model to obtain a structure with better seismic performance.3.Choose the optimal structure and the original structure to analyze under rare earthquakes,and compared the difference in seismic performance.Finally,we got the conclusions through the analysis as following: the seismic capacity of the main structure of the SRC core tube structure is improved compared with the general concrete core tube structure;the increase of the thickness of the core tube increases the rigidity of the structure,but the seismic performance does not necessarily increase,so we should pay attention to make the structure stiffness in a reasonable distribution arrangement during engineering design.