To study the effect of dimensions of openers on quake behavior of resistant cores of reinforced concrete in tall buildings

Abstract

From engineering point of view, a construction can be named tall when its height leads to significant influence of lateral forces of wind and earthquake on its design. Also, contrary to gravity forces, the effect of lateral forces on constructions is so variable and increases along with height. Three fundamental factors should be considered in designing all tall buildings are resistance, rigidity and stability. In designing tall buildings, construction system should be consistent with these requirements. The need to resistance is the dominant factor in designing short buildings. But, increasing the height leads to more necessity of rigidity and stability. Therefore, in a tall building structure, the stable system against lateral and erect loads differs in terms of height of structure, kind of use and nature of forces.

In this study, first, central concrete core system was introduced as the lateral carrier system. Then, some studies were reviewed focusing on the behavior of this specific system. Meanwhile, building models and implementing analytic analyses using ETABS were presented. Finally, data were compared to find ideal results.

Keywords: concrete center core; lateral resisting system; time history analysis; rms results; modal analysis