Abstract: Reinforced concrete (RC) structures are widely used in modern construction due to their strength, durability, and economical advantages. However, many existing RC buildings are vulnerable to earthquake forces because they were designed without considering modern seismic design provisions. Earthquakes can cause severe damage to structural components such as beams, columns, and joints, resulting in structural instability and loss of life. Retrofitting has therefore become an essential technique for improving the seismic performance and safety of existing structures. This review paper presents a detailed study on the dynamic analysis of retrofitting multi-storey reinforced concrete structures using jacketing and steel wrapping techniques. Various retrofitting methods such as RCC jacketing, steel jacketing, CFRP wrapping, steel bracing, and base isolation are reviewed based on previous research studies. The paper also discusses different analysis methods including pushover analysis, nonlinear static analysis, and time-history analysis used for evaluating seismic behavior. The reviewed literature indicates that jacketing and steel wrapping techniques significantly improve stiffness, ductility, strength, and load carrying capacity of RC structures while reducing displacement and structural damage during earthquakes. The paper finally identifies important research gaps and highlights the need for detailed dynamic analysis of retrofitted RC buildings under seismic loading conditions.
Kawale et al. (Mon,) studied this question.
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