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Analyse de la stabilité d'ouvrages en gabions cellulaires par la théorie du calcul à la rupture

Abstract : Cellular cofferdams are constituted by a shell of steel sheetpiles filled with sand or gravel backfill. They are used in harbour or fluvial locations as earth or water retaining structures. Although they have been in use for more than 80 years, their mechanical behaviour is still poorly understood and accidents still occur even during construction. The use of design methods based on yield design theory can contribute to found the design of cellular cofferdams on rigorous bases. The yield design of cellular cofferdams has some particular characteristics : true 3-dimensional geometry, mixed modelling of the structure (the sheetpiles are modelled as a shell, the backfill as a 3-dimensional continuous media). Modelling sheetpiles as a shell makes it possible to consider kinematic fields with flexure strain of the sheetpiles. Flexure strain has been observed on some accidents and some model tests. The present work opens with an introductory chapter dealing with the construction of cellular cofferdams, their applications and design methods. Chapter 2 deals with the modelling of cellular cofferdams. Chapters 3, 4, 5 and 6 deal with the application of static and kinematic methods to a single cofferdam cell and to cellular cofferdams. In chapter 7, the results are compared to data from different sources : field measurements, case of accident, model tests.
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1997TH_CORFDIR_A_NS20575.pdf
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  • HAL Id : tel-00523026, version 1

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Alain Corfdir. Analyse de la stabilité d'ouvrages en gabions cellulaires par la théorie du calcul à la rupture. Matériaux. Ecole Nationale des Ponts et Chaussées, 1997. Français. ⟨tel-00523026⟩

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