Fragility analysis in heritage structures using a bar-constituted model

This project addresses the challenge of protecting heritage masonry structures in seismic zones by developing precise analysis tools. It aims to overcome the computational limitations of Finite Element Models (FEM) and the restricted applicability of the Equivalent Frame Method (EFM) for irregular historic structures. The proposed solution involves modeling the repetitive transverse axis of the Metropolitan Cathedral of Santiago, Chile, using a bar-element-based model, which significantly reduces degrees of freedom and processing time compared to 2D/3D models. The methodology includes calibrating these bar elements to replicate behavior previously obtained using the Rigid Element Method (REM), employing the specialized software OpenSees to conduct the necessary nonlinear analyses. This approach leverages the powerful nonlinear analysis tools available in structural software to efficiently evaluate the seismic response of the masonry.<br/><br/><b>Goal</b>: <br/>To generate a simplified planar model, constituted by bars with nonlinearities concentrated at their ends, to represent the nave macro-element (repetitive transverse axis) of the Metropolitan Cathedral of Santiago, Chile.<br/><br/><b>Research lines</b>: <br/>Analysis, development and improvement of materials, tools and techniques for use in construction, industry and various applications