Safety of existing arch-dams [La sûreté des barrages-Voûtes existants]
| Autor: | Agresti, P., Roy, M., Andrian, F., Bourdarot, E., Carrere, A., Carvajal, C., Castanier, G., Couturier, B., Emeriault, F., Fabre, J.-P., Fournie, Y., Hoonakker, M., Jellouli, M., Molin, X., Noret, C., Ousset, I., Prévôt, G., Robbe, E., Tardieu, B., Yziquel, A. |
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| Přispěvatelé: | Artelia Eau & Environnement [Echirolles], Artelia Eau & Environnement [Lyon], EDF (EDF), Coyne et Bellier, Tractebel engineering, Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Aix Marseille Université (AMU)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Comité Technique Permanent des Barrages et Ouvrages Hydrauliques (CTPBOH), Laboratoire sols, solides, structures - risques [Grenoble] (3SR ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), GéoMécanique, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Société Hydro-Electrique du Midi, Ministère de la Transition Ecologique et Solidaire (MTES), Bureau d'Etude Technique et de Contrôle des Grands Barrages (BETCGB), Ministère de l'Ecologie, de l'Energie du Développement Durable et de la Mer, ISL ingénieries, Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Emeriault, Fabrice |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Monitoring
Numerical models Risk analysis Performance Regulatory requirements Arch dams Performance criterion Behavior analysis [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Lanthanum Accidents Concretes Structural design [SPI.GCIV] Engineering Sciences [physics]/Civil Engineering Abutments (bridge) Behaviour Arches Reservoirs (water) Global mechanisms Innovative practices Foundations Risk assessment Engineering consulting |
| Zdroj: | 26th International Congress on Large Dams, 2018 26th International Congress on Large Dams, 2018, 2018, Vienna, Austria. pp.691-715 |
| Popis: | cited By 0; Conference of 26th International Congress on Large Dams, 2018 ; Conference Date: 4 July 2018 Through 6 July 2018; Conference Code:220729; International audience; There are about a hundred arch dams in France, essentially built between 1935 and 1980. These elegant, often majestic, structures testify to the knowledge of a generation of brilliant engineers. These engineers dared to draw pure and thin lines by optimizing the material placement to reconcile the structures safety with the projects costs. The mechanical operating mode ideally depends on the transmission of the efforts to their foundation by mobilizing arch effects. So it seems safe provided that the rock supports resist. In practice the behavior of these structures is complex, especially for geometries which are far from the standard design: arch dams settled in wide or expanded flat-bottom valleys, unfavorable slopes of banks. Due to the number of projects becoming scarce (set apart in some countries), it is essential to assess the safety of existing dams taking into account incidents and accidents analysis of these structures, as well as experiences gained through their behavior analysis carried out for more than 50 years. These experimental lessons allow identifying the main failure modes, by distinguishing what come from a normal adaptation of the structure, from located cracks due to structure hyperstatic design, or from more global mechanisms. The present development of risk analyses and the regulatory requirements to take into account low frequency events require the search for analysis methods and if necessary for solutions (monitoring, remedial works) adapted to possible failure kinematics. In this context, a working group of the French Committee of Dams and Reservoirs, consisting of experts coming from consulting firms, operational groups and monitoring department, has introduced an approach centered on the analysis of the existing arch dams portfolio. This article presents the first results in terms of recommendations of behavior analyses, failure modes, performance criteria and adapted monitoring. In addition, Coyne and Bellier / Tractebel and Artelia, two French engineering consulting firms present their innovative practices on two specific topics, respectively: - concrete abutments behavior and modeling through three examples; - dam modeling taking into account the loading history on structures by “cyclic calculations”. The full text of this article is available in English: http://barrages-cfbg.eu/IMG/pdf/gtvoute_vienne2018.pdf. © 2018 ICOLD/CIGB, Paris, France. |
| Databáze: | OpenAIRE |
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