A Multi-objective Global Optimization Approach for Vibration and Cost Minimization of a Reinforced Concrete Tall Building

In earthquake-prone areas, designing tall buildings that can withstand the ground vibrations caused by seismic activity is crucial. One approach to mitigating these vibrations is through the use of Tuned Mass Dampers (TMDs). This paper presents a multi-objective optimization approach using the NLopt algorithm to design TMDs. The optimization is performed by optimizing the parameters of the TMD located at the roof of different building configurations, with the objective functions of cost and maximum top displacement minimized under two earthquake ground vibration. To support the optimization process, a computer program has been developed in C +  +  linked with the algorithm. Obtained results show that NLopt is effective in optimizing structural performance with a significant reduction in sway and the choice of better TMD parameters under seismic activity. The findings of this study can provide a useful guideline for designers and engineers to optimize TMD parameters and improve the structural performance of tall buildings in a cost-effective manner under seismic activity.