7 research outputs found
Comportement des ouvrages historiques soumis à des sollicitations sismiques
No full textTexte intégral accessible uniquement aux membres de l'Université de LorraineNot availableLa méthode des éléments distincts est devenue l'une des méthodes de modélisation numériques les mieux adaptées à l'analyse du comportement des massifs rocheux fractures. Principalement dédiée à l'analyse des milieux discontinus, la méthode des éléments distincts est utilisée ici pour étudier le comportement d'ouvrages réalisées en maçonnerie et soumis à des sollicitations sismiques. Une méthodologie s'appuyant sur cette méthode de modélisation est donc proposée pour l'analyse de la vulnérabilité sismique des ouvrages historiques. Après avoir rappelé les fondements du génie parasismique en général, nous nous attachons a présenter de façon exhaustive les difficultés liées à l'analyse structurale des ouvrages historiques en maçonnerie et les méthodes jusqu'à maintenant employées pour réaliser ces analyses. Vient ensuite une présentation des méthodes de modélisation numérique et en particulier de la méthode des éléments distincts dont nous décrivons les principes de fonctionnement. Puis, nous expliquons comment il est possible d'utiliser cette méthode pour l'analyse structurale, en particulier dans le cas de sollicitations dynamiques, des ouvrages historiques réalisés en maçonnerie. Nous mettons notamment l'accent sur l'apport de cette méthode par rapport aux méthodes de modélisation plus traditionnelles telles que la méthode des éléments finis. Nous présentons ensuite une validation de notre approche s'appuyant sur la comparaison entre un modèle numérique simple et un modèle analytique reconnu. L’analyse systématique de cas simples telles que murs et arches, mise en rapport avec des observations réelles, nous permet ensuite de conclure à l'efficacité de la démarche et de la méthode employées. Enfin, nous présentons l'analyse dynamique de cas réels (égyptiens et grecs principalement), choisis pour leur représentativité de l'ensemble des ouvrages historiques ainsi que pour les problèmes particulier qu'ils posen
The distinct element method : a new way to study the behaviour of ancient masonry structures under static or dynamic loading, by the use of numerical modelling
No full textInternational audienceNumerical modelling methods have reached a very high level of development during the last few years and gained a remarkable success in many fields. Recently, the Distinct Element Method (DEM) became one of the best techniques used for the analysis of fractured rock masse
The distinct element method : a new way to study the behaviour of ancient masonry structures under static or dynamic loading, by the use of numerical modelling
No full textInternational audienceNumerical modelling methods have reached a very high level of development during the last few years and gained a remarkable success in many fields. Recently, the Distinct Element Method (DEM) became one of the best techniques used for the analysis of fractured rock masse
The distinct element method : a new way to study the behaviour of ancient masonry structures under static or dynamic loading, by the use of numerical modelling
No full textInternational audienceNumerical modelling methods have reached a very high level of development during the last few years and gained a remarkable success in many fields. Recently, the Distinct Element Method (DEM) became one of the best techniques used for the analysis of fractured rock masse
Forsa pilot program and evaluation plan
No full textForsa, which means “Opportunity” in Arabic, is a new economic inclusion program of the government of the Arab Republic of Egypt. Implemented by the Ministry of Social Solidarity, the program aims to graduate beneficiaries of the national cash transfer program, the Takaful & Karama Program (TKP), from being dependent on transfers from TKP to economic self-reliance by enabling them to engage in wage employment or sustainable economic enterprises. The most recent World Bank Economic Inclusion report (Andrews et al. 2021) highlights a recent increase globally in such graduation or economic inclusion programs, which now reach around 92 million beneficiaries from 20 million households across more than 75 countries. This rapid growth is raising demand for evidence on best practices in graduation program implementation. Egypt’s experience with Forsa can contribute to such guidance
Forsa pilot program and evaluation plan [in Arabic]
No full textForsa, which means “Opportunity” in Arabic, is a new economic inclusion program of the government of the Arab Republic of Egypt. Implemented by the Ministry of Social Solidarity, the program aims to graduate beneficiaries of the national cash transfer program, the Takaful & Karama Program (TKP), from being dependent on transfers from TKP to economic self-reliance by enabling them to engage in wage employment or sustainable economic enterprises. The most recent World Bank Economic Inclusion report (Andrews et al. 2021) highlights a recent increase globally in such graduation or economic inclusion programs, which now reach around 92 million beneficiaries from 20 million households across more than 75 countries. This rapid growth is raising demand for evidence on best practices in graduation program implementation. Egypt’s experience with Forsa can contribute to such guidance
Forsa pilot program and evaluation plan
No full textForsa, which means “Opportunity” in Arabic, is a new economic inclusion program of the government of the Arab Republic of Egypt. Implemented by the Ministry of Social Solidarity, the program aims to graduate beneficiaries of the national cash transfer program, the Takaful & Karama Program (TKP), from being dependent on transfers from TKP to economic self-reliance by enabling them to engage in wage employment or sustainable economic enterprises. The most recent World Bank Economic Inclusion report (Andrews et al. 2021) highlights a recent increase globally in such graduation or economic inclusion programs, which now reach around 92 million beneficiaries from 20 million households across more than 75 countries. This rapid growth is raising demand for evidence on best practices in graduation program implementation. Egypt’s experience with Forsa can contribute to such guidance.Non-PRIFPRI1; EgyptSSP; CRP2; 5 Strengthening Institutions and Governance; Evaluating Impact and Building Capacity (EIBC)DSGD; PHND; PIMCGIAR Research Program on Policies, Institutions, and Markets (PIM
