[연구논문-건축] Trends on Tall Buildings and Lateral Resisting Structural System in Korea

In a tall building project, the selection of a structural system is considered as the most fundamental factor affecting the construction cost. From the perspective of a structural engineer who selects and designs the structural system of a tall building, the most important element is stiffness, which resists lateral load. Significant efforts are exerted into designing a structural system that efficiently enhances lateral stiffness with the minimum quantity of structural members, while also satisfying the limit on lateral displacement in the design specifications. In this study, a comparative analysis on the lateral stiffness of tall buildings was conducted according to the structural system, the type of plan, and the placement of core, based on the perspective of a structural engineer. The lateral stiffness of a tall building had a difference of up to three times more, according to the different lateral resistance systems. Also, according to the type of plan and placement of core, about 1.8 times difference was observed.