| 요약2 |
With competitions for the building height at all parts of the world, the necessity for new structural system efficiently-resisting lateral loads is being increased. Especially, for super high-rise building, new considerations for lateral load resisting system is required to control lateral displacement which is increased by 4-square of building height. In this study, split cores are applied as a lateral load resisting system, and structural behaviors are studied by 3-D finite element analyses. The point load is laterally applied to top of 3-D model of building structures with single or dual cores and mega columns, and then the structural efficiencies are analyzed with the lateral displacements of top of buildings. The structural capabilities of single and dual core systems are compared, and the effects of various parameters - number of outriggers in a building, number of stories of a outrigger, sectional area ratios of columns and walls, and building height - on structural behaviors of high-rise building are analyzed. Also, through simple examples of lateral load resisting designs, the material quantities are compared. Finally, based on analysis results with various parameters, the guidelines for the efficient structural system with dual cores are presented. |