Evaluation of Seismic Vulnerability of Existing Reinforced Concrete Structures Using Non-Iterative Spectral Methods

The prediction of the behavior of existing structures during earthquakes is crucial, particularly for buildings of significant public utility like hospitals, which must maintain functionality with minimal damage during seismic events. This study assesses the seismic vulnerability of a clinic in Agadir, Morocco, an area known for high seismic activity. Utilizing a non-iterative spectral method, the research employs Pushover analysis via SAP 2000 modeling to derive the building's capacity curve in ADRS format. This curve is subsequently overlaid with the site's inelastic response spectrum, converted to AD format according to the revised RPS 2011 standards, to establish the performance point. The study further interprets fragility curves using RISK UE methodologies to evaluate vulnerability, providing critical insights into the structural resilience of essential facilities in seismic zones.