Evaluation of the Seismic Performance of a Building with Integrated System of 'Confined Masonry' and 'Concrete Frame' (ISMF)

Advancements in structural engineering continue to develop more efficient models for various applications. However, traditional structural systems remain predominant in construction despite their limitations in ensuring adequate performance under static or dynamic loads. The main challenge lies in the vulnerability of concrete frame (CF) systems, which tend to experience large displacements and stiffness degradation compared to confined masonry (CM) systems, which, while rigid, exhibit limited ductility. This study analyzes the seismic behavior of a hybrid system that combines CF and CM, referred to as the Integrated system of 'Confined Masonry' and 'Concrete Frame' (ISMF). The proposed system leverages the stiffness and shear absorption capacity of CM while benefiting from the ductility and moment resistance of CF. The methodology includes static and dynamic analyses on representative structural models, evaluating key parameters such as displacements, drifts, base shear forces, and overturning moments in structures up to four stories. The results demonstrate that hybrid configurations efficiently control deformations and distribute forces more uniformly, highlighting the contribution of masonry to lateral stiffness and the role of frames in resisting moments. Finally, optimal models were identified, and regulatory adjustments were proposed to ensure structural safety and economic feasibility in seismic-prone regions of Peru.