Seismic Performance-Based Optimisation of Reinforced Concrete Dual-Systems

This paper aims to optimise the initial cost of an 8-story reinforced concrete dual system using a Performance-Based Design approach.By focusing on the practical aspects of cost optimisation, this paper provides valuable insights that can be directly applied in real-world scenarios, thereby enhancing the cost-effectiveness of structures in structural engineering.This paper applies different design constraints, such as geometry, strength, and PBD constraints, in two main groups: primary and PBD constraints.Additionally, a closed-form equation is proposed to evaluate the initial cost of RC dual-system structures, using the dimensions of elements and reinforcement bars size and number as design variables.The Center of Mass Optimization algorithm, a physics-based metaheuristic, is used as an optimisation engine.A discrete section database is created to meet code-based requirements and reduce the design space.