Structural Optimal Design Of Super High-rise Building Based On A Wind Tunnel Test

With rapid development of the social economy and fast growth of thepopulation, the land resources greatly decrease, as a result, the buildings becomehigher to meet the requirement of the economy and population. The emergence ofnovel structural materials and construction technique provide technical support forsuper high-rise building. Because of superior mechanical performance, the tubestructure is the most common structural type of high-rise buildings. With increasingof the building height, the weight is more and more heavy. Simultaneously, thehorizontal wind load is particularly prominent. Therefore, super high-rise structureoptimal design is very meaningful.In this paper, two216m super-tall structures are employed as research objects.Through the basic concept of structural optimization, a reasonable structure designwas chosen according to the reasonable structure layout form of the constructionscheme. Then, the structure scheme is optimized on the premise of guarantee thesafety based on the wind tunnel test results. Finally, the structural internal force isanalyzed and the reinforcement is calculated by the finite element design codePKPM and ETABS. The comparative analysis of the structure before and afteroptimization as follows:(1) After optimization, the constant loads and live loads of the super high-risestructure are more reasonable. The sizes of column section, beam section and shearwall cross section are greatly reduced, as a result of decreasing of the total weightof the super high-rise structure.(2) The construction cost decreases with the decrease in the structural weight;furthermore, the seismic action of the super high-rise structure is simultaneouslyreduced.