Abstract

Abstract: Buildings in high-seismic areas must be designed with particular attention to their lateral stability during extreme earthquakes. A modern concept of shifting the vertical column's orientation to a diagonal column aids in the transformation of all forces into axial forces. Diagrid (Diagonal Grid of Columns) is a brand new structural system designed to improve a building's lateral stability. The diagrid structural system's aesthetics and structural advantages have made it a popular option for many buildings around the world, including many prominent high-rise structures constructed in recent years. The nonlinear behaviour and design of mid-to-high-rise RCC diagrid structures are investigated in this paper. The results are compared to corresponding moment resisting frames and concentrically braced frames in terms of tale drift, time length, base share, and displacement in diagrids. Practical design guidelines are suggested using virtual work/energy diagrams and nonlinear seismic analysis using ETABs for G+7, G+11, and G+16 to improve nonlinear behaviour and increase collapse load potential of diagrid structures in high seismic regions with time history and Pushover analysis.Keywords: Diagrid building, earthquake forces, time history analysis, Pushover Analysis