Assessment of Seismic Vulnerability of Urban Buildings in Morocco

Abdallah El Hammoumi(1*), Aomar Iben Brahim(2), Abdelouhad Birouk(3), El Arbi Toto(4), Azelarab El Mouraouah(5), Mohamed Kerroum(6), Kamal Gueraoui(7), Mohamed Kasmi(8)

(1) Mohamed Vth University, Morocco
(2) Centre National pour la Recherche Scientifique et Technique and the Euro-Mediterranean Center for Seismic Prevention and Reduction (CEPRIS), Morocco
(3) Centre National pour la Recherche Scientifique et Technique and the Euro-Mediterranean Center for Seismic Prevention and Reduction (CEPRIS), Morocco
(4) Ibn Tofail University, Morocco
(5) Centre National pour la Recherche Scientifique et Technique and the Euro-Mediterranean Center for Seismic Prevention and Reduction (CEPRIS), Morocco
(6) Mohamed Vth University, Morocco
(7) Team of numerical and theoretical modelling in fluid mechanics and in environment, LPT, Faculty of Science, Morocco
(8) Centre National pour la Recherche Scientifique et Technique and the Euro-Mediterranean Center for Seismic Prevention and Reduction (CEPRIS), Morocco
(*) Corresponding author


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Abstract


This study has the aim of assessing the seismic vulnerability of constructions in urban areas in Morocco. For this purpose, we use statistics of a survey on the buildings stock in Morocco that was implemented in the year 2000 by the Housing Observatory of the Real Estate Promotion Direction of the State Secretariat of Housing (HOREPD, enquête-2000). These statistics helped define the different types of housing, and their structures. This information, along with past-earthquakes observed damages allowed us to rank the different buildings into vulnerability classes. For the different types of constructions, we find four vulnerability classes, from class A to D. We then use a semi-empirical method for the computation of the buildings vulnerability index and fragility curves for the different vulnerability classes. We use these fragility curves to simulate the consequences of a seismic intensity IX on the different vulnerability classes. It turns out that the consequences would be catastrophic for class A and would have very little effect on class D buildings.
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Keywords


Seismic Vulnerability Assessment; Urban Area; Morocco; LM-1 Method; Vulnerability Index; Fragility Curves

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References


Enquête-2000 (2001). Enquête logement 2000, rapport final de la phase 3 ; analyse des résultats, Direction de la Promotion Immobilière, Observatoire de l’Habitat, Secrétariat d’Etat à l’Habitat, Ministère de l’Aménagement du Territoire, de l’Environnement, de l’Urbanisme et de l’Habitat, Morocco.

Milutinovic and Trendafiloski (2003). RISK-UE WP-4, Vulnerability of current buildings ; An advanced approach to earthquake risk scenarios with applications to different European towns

R.P.S. 2000 (2001). Règlement de construction parasismique (R.P.S. 2000) ; Secrétariat d’Etat à l’Habitat, Ministère de l’Aménagement du Territoire, de l’Urbanisme, de l’Habitat, et de l’Environnement, Morocco.

Iben brahim, A., A. El Mouraouah, A. Birouk, and M. Kasmi (2004), Carte sismique du Maroc, 1900-2001, édité par le CNRST et l’Agence Nationale de la Conservation Foncière, du Cadastre et de la Cartographie, échelle 1.200.000.

Talhaoui, A., A. Iben brahim, A. El Mouraouah, M. Kasmi and A. Birouk, (2004). Le séisme d’Al Hoceima du 24 février 2004 : Répliques et étude macrosismique, Abstracts of the "Colloque International sur les technologies nouvelles et l’amélioration de la gestion des risques majeurs", Kenitra, march 15-16-17, 2004, ed. By le Centre Euroméditerranéen de Prévention du Risque Sismique (CEPRIS), p. 23


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