Experimental study on strengthening CFS dry joints in existing racking systems
Ultima modifica: 2025-08-01
Sommario
This paper presents an experimental campaign aimed at investigating the effectiveness of reinforcing dry-joints in cold-formed steel rack structures, focusing on their down-aisle seismic behavior. Given the need of reinforcing conventional cold-formed steel storage racks during seismic events, particularly at their joints, the study evaluates practical reinforcement solutions to enhance structural resilience. A series of monotonic and cyclic tests were performed on full-scale specimens, considering both conventional and reinforced dry-joint configurations. Reinforcement methods, including the use of additional bolting, stiffening elements, and innovative connection detailing, were systematically examined. Experimental results demonstrated improvements in stiffness, ductility, and overall seismic performance of the reinforced joints compared to traditional configurations. Particular attention was given to energy dissipation capacity, deformation mechanisms, and failure modes under simulated earthquake conditions. Findings from this study contribute to a deeper understanding of seismic-resistant design for cold-formed steel racks, providing valuable insights for structural engineers aiming to improve safety and reliability of storage systems in seismic regions.
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