Probabilistic Seismic Damage for Existing RC Buildings Used for Educational Purposes

Abstract

The objective of this research is to evaluate the seismic vulnerability of a collection of 55 reinforced concrete educational establishments, comprising approximately 516 buildings, located within the urban area of Mostaganem. Among them, 328 constructions were built in compliance with Algerian seismic regulations (Date > 1980 = 328 constructions), while 188 constructions were constructed prior to the implementation of seismic design codes (Date < 1980 = 188 constructions). This classification corresponds to the introduction and enforcement of the regulations following a significant earthquake in Chlef (El Asnam) in 1980.Using the RISK-UE lm1 method, the vulnerability index was determined through visual inspections of each building. An on-site inventory form was utilized to identify the main sources of seismic vulnerability, considering factors such as building typology, structural system, code adherence, maintenance condition, number of floors, plan and elevation irregularities, soil characteristics, and more. This approach allowed for the prioritization of buildings based on their specific vulnerabilities. The results obtained from this methodology were integrated into a Geographic Information System (GIS) environment, enabling a comprehensive understanding of the seismic behavior of the structures and facilitating the estimation of seismic risk levels. This integration also supports simulations and efforts to implement concrete preventive measures aimed at strengthening existing educational buildings, thereby reducing the potential negative consequences of future earthquakes.

Keywords

• Seismic scenarios
• Vulnerability
• RISK-UE
• Damage
• Reinforced concrete buildings

References

1. Belhamissi, M. (1976). Histoire de mostaganem (des origines à l’occupation française). Alger : S.N.E.D
2. CETE Méditerranée. (2008). Centre d’Etude technique de l’equipement Méditerranée, Comparaison de méthodes qualitatives d’évaluation de la vulnérabilité des constructions aux séismes. Plan séisme - action 2.4.7. Guide des méthodes de diagnostics de la résistance des bâtiments aux séismes
3. Giovinazzi S (2005) Vulnerability assessment and the damage scenario in seismic risk analysis (Doctoral dissertation). University of Florence, Italy