Dynamic Analysis of Tall Buildings Using Diagrid Structural Systems for Seismic and Wind Resistance

Rapid urbanization and increasing land scarcity have led to the development of high-rise structures, where lateral load resistance becomes a governing design criterion. The diagrid structural system has emerged as an efficient alternative due to its superior stiffness, reduced material usage, and architectural flexibility. This study investigates the structural behaviour of 48-storey steel diagrid buildings with three plan configurations plus (+), rectangular, and L-shape located in Seismic Zone III. The analysis includes linear static, response spectrum, and wind load analysis using ETABS software. Parameters such as storey displacement, storey drift, and storey shear are evaluated for different diagrid module configurations (2, 4, 6, and 8 storeys). The study aims to determine the optimum diagrid angle for improved structural performance. Results indicate that diagrid systems significantly reduce displacement and drift compared to conventional systems, with optimal performance observed within a specific range of diagrid angles.