Font Size: 

With the development of urban construction, more and more super high-rise buildings appear in urban construction and become landmarks in the core areas of major cities. The combination of mega diagonal bracing system and conventional frame core tube structure can effectively improve the lateral stiffness and lateral force resistance of the structure, which is widely used in the structural design of super high-rise buildings. For Mega inclined braced super high-rise buildings and other structures, if the layout of key components such as inclined bracings is unreasonable, the optimization space obtained only by size optimization is very limited, while topology optimization can greatly improve the rationality of structural component layout, which has great potential in structural optimization design. In this paper, according to the structural characteristics of super high-rise building with giant diagonal bracing, the hybrid optimization of diagonal bracing topology and all component sizes of super high-rise building with giant diagonal bracing is studied. It is proposed to adopt the nonlocal field theories to reduce the grid dependence of topology optimization and the dynamic evolution strategy to improve the calculation efficiency of topology optimization, carry out topology optimization design for its inclined support layout, and convert it into a well manufacturable inclined support member through computer graphics method, and further carry out size optimization with beams, columns, shear walls and other structural members, Through the cyclic iteration of topology optimization and size optimization, the final design scheme of the structure converges to the optimal solution of the inclined brace layout and the global component size, so as to effectively reduce the project cost on the premise that the structure meets the design limit of the code. This is a comprehensive study integrating wind effect and seismic effect analysis, finite element analysis, computer science and technology and optimization theory of super high-rise buildings. It will further develop and improve the theory and method of wind resistant and seismic optimal design of super high-rise buildings, and has very important theoretical significance and broad application prospects.