Analysis of Circular Diagrid Composite Building with and Without Core Shear Wall Using Fea Software

One of the fascinating structural design concepts for resilient tall buildings is the diagrid (diagonal grid) structural design. Due to its aesthetic appeal and structural efficiency, the diagrid has emerged as a contemporary design trend for tall structures. By utilizing a compact grid of diagonal members, the diagrid structural system effectively withstands both lateral and gravity loads. In contrast to a conventional steel frame, it requires less structural steel, leading to a more environmentally sustainable building. This research employs ETABS to analyze the structural performance of tall buildings constructed with diagrid steel and those featuring various bracing systems. Consequently, the aim of this study is to compare the lateral displacement induced by wind and earthquake loads between high- rise structures utilizing the diagrid system and those employing bracing systems. Additionally, the study examines the relationship between the use of diagrid and other bracing systems concerning the natural frequency of high-rise structures or buildings, as well as optimizing the thickness of RCC shear walls. The design and analysis of buildings with RCC shear walls, steel plate shear walls, and composite shear walls are conducted using ETABS software. The impact of varying shear panel thicknesses and a comparison of the results regarding story drift and story shear are presented.