Analysis of the Retrofit Method for Concrete Structures Using Steel Bracing Connection
Keywords:
steel bracing connection, concrete-filled steel tube (CFT), concrete structure retrofitting, end plate, steel plate core, yielding zone, seismic performanceAbstract
Retrofitting concrete structures is considered one of the key methods for improving seismic performance and enhancing the safety of buildings. In this study, the steel bracing connection has been analyzed as an effective solution to increase the strength and stiffness of concrete structures. By using numerical models and examining nonlinear behavior, the effect of bracings on improving flexural and shear resistance, reducing lateral displacement, and controlling crack propagation was evaluated. The results indicate that proper connection design, accurate determination of internal core spacing, and the use of concrete-filled steel tubes (CFT) along with reinforcing elements such as steel plates and end rings play a significant role in enhancing structural performance. The findings can provide practical guidance for engineers in strengthening and retrofitting existing concrete structures, while minimizing the destructive impacts caused by seismic and dynamic loadings.
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