Behaviors of the Curtain Wall Façade in the Tall Building Under Dynamic Actions- An Overview and Recommendations

Abstract

The flourishing growth of tall building construction with advanced technologies adopted façade structures is the new trend around the world. This study is mainly focused on the design and construction techniques of the curtain wall façade system and its behaviors under dynamic actions. Generally, a unitized curtain wall system is used as a building lope in the tall building due to its faster installation techniques. The provision of stack joints is a crucial part, especially at the design stage to accommodate the horizontal and vertical movement of the tall building under cyclic wind and seismic action. The effect of the deflection, story drift index, and column shortening of the tall building is analyzed using Finite Element Analysis (FEA) with 41 store building model on the façade wall is well discussed and recommended suitable measures to increase the life span of the façade wall under heavy dynamic repeated loading. On the other hand, lateral torsional buckling of the mullion, especially for the long span plays a vital role in the material and cost of the curtain wall panel. Therefore, this study is focused on the provision of the Anti-Buckling Clip (ABC) to increase the lateral torsional buckling capacity as well as flexural buckling capacity without increasing the stiffeners of the mullion.