COMPARATIVE ANALYSIS OF DIA GRID STRUCTURAL SYSTEM WITH AND WITHOUT BASE ISOLATION

Abstract

In the present period, high-rise building construction is rapidly expanding around the globe. Architects and engineers have started building cities vertically because to the lack of easily available free land and the expansion of urban regions. Because of the system's triangulation's aesthetic potential and structural efficiency, the dia grid structural system has gained popularity lately for tall buildings. Dia grid architecture is more resistant to lateral loads than standard frame constructions with external vertical columns because it has slanted columns. In the dia grid system, lateral loads are resisted by the axial motion of the inclined columns positioned at the exterior edges of the buildings. An economical method of enhancing the seismic performance of buildings constructed in accordance with industry standards is to install seismic isolation and energy dissipation systems. By adjusting structural stiffness and damping, these strategies lessen seismic forces, while traditional seismic design requires more strength and ductility to resist seismic forces.
The current research uses ETABS software to analyse a 15-story dia grid building with varying dia grid member angles for both friction pendulum and rubber base isolation systems. Results for rubber base and friction pendulum models are compared, including time period, tale drift, story shear, story bending, and model stiffness.