Dynamic and Comparative Analysis of Composite Structures for Seismic Resistance

Abstract The study primarily investigates three main structural typologies—Reinforced Concrete (RC) frames, Steel-framed structures, and Composite Concrete-Steel constructions—under severe seismic loading conditions. A key focus is the implementation and efficacy of lateral loadresisting systems, including shear walls and various bracing systems (such as curved bracing and Buckling Restrained Braces, or BRB) in controlling dynamic response parameters like base shear, story drift, and displacement. The structural behaviour is modelled and analysed using advanced numerical methods, such as the Response Spectrum Method, adhering to international and national building codes for earthquake-resistant design. Beyond structural mechanics, the work includes an essential cost and time analysis comparing the construction duration and overall project economics of composite construction versus precast and conventional methodologies. This holistic approach aims to identify the optimum structural and material solution that balances superior seismic performance and structural safety with construction speed and economic viability for high-rise projects in earthquake-prone regions.