Jin-Goo Kim
Sungkyunkwan University · Engineering
About the Lab
Professor Jin-Goo Kim's research lab specializes in performance-based seismic design and seismic retrofitting of steel and reinforced concrete structures, with a strong focus on enhancing structural resilience against progressive collapse and seismic hazards. The lab investigates advanced energy-dissipating systems such as viscoelastic and viscous dampers, buckling-restrained braces, and friction dampers, integrating them into innovative lateral load-resisting systems like diagrid and braced frames. Emphasis is placed on optimizing damper and brace configurations through advanced analysis and optimization techniques, including gradient-based algorithms and capacity spectrum methods, to achieve target performance levels efficiently. The lab also develops and validates innovative retrofit systems, particularly for vulnerable soft-first-story RC structures, using both analytical and experimental validation.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15Abstract This study investigated the effect of catenary action on the progressive collapse potential of steel moment framed structures. Non‐linear static and dynamic analyses of three‐ and six‐story model structures with and without bracing were carried out following the alternate path method recommended by the General Services Administration 2003. According to the non‐linear static push‐down analysis results, the contribution of catenary action and the progressive collapse potential of structur
SUMMARY In this study, the seismic performance of typical diagrid structures was investigated. To this end, 36‐storey diagrid structures with various slopes of external braces were designed and their seismic responses were evaluated using nonlinear static and dynamic analyses. A tubular structure and a diagrid structure with buckling‐restrained braces were also designed with the same design loads, and their seismic performances were compared with those of the diagrid structures. According to the
Abstract This paper presents a simultaneous optimization procedure for both viscoelastic dampers (VEDs) and supporting braces installed in a structure. The effect of supporting braces on the control efficiency of VEDs is also investigated. To apply a general gradient‐based optimization algorithm, closed‐form expressions for the gradients of objective function and constraints are derived. Also, the constraint on the dynamic behavior of a structure is embedded in the gradient computation procedure
Research Areas
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