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Steel and Composite Structures
  Volume 50, Number 3, February 10 2024 , pages 337-345
DOI: https://doi.org/10.12989/scs.2024.50.3.337
 


Optimum distribution of steel frame assembly for seismic retrofit of framed structures
Michael Adane, Seungho Chun and Jinkoo Kim

 
Abstract
    This research proposed a particle swarm optimization (PSO) based seismic retrofit design of moment frame structures using a steel frame assembly. Two full scale specimens of the steel frame assembly with different corner details were attached to one-story RC frames for seismic retrofit, and the lateral load resisting capacities of the retrofitted frames subjected to cyclic loads were compared with those of a bare RC frame. The open source software framework Opensees was used to develop an analytical model for validating the experimental results. The developed analytical model and the optimization scheme were applied to a case study structure for economic seismic retrofit design, and its seismic performance was assessed before and after the retrofit. The results show that the developed steel frame assembly was effective in increasing seismic load resisting capability of the structure, and the PSO algorithm could be applied as convenient optimization tool for seismic retrofit design of structures.
 
Key Words
    Particle Swarm Optimization (PSO); seismic performance; seismic retrofit; steel frame
 
Address
Michael Adane, Seungho Chun and Jinkoo Kim:Department of Global Smart City, Sungkyunkwan University, Suwon Korea
 

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