Optimizing the design of rockfall embankments with a discrete element method

Plassiard, Jean‐Patrick; Donzé, Frédéric

doi:10.1016/j.engstruct.2010.08.025

Cited by 38 publications

(22 citation statements)

References 14 publications

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“…It is therefore necessary, at a design stage, to limit their number and to use their results to set up numerical models that are able to forecast the behaviour of the structure at various energy level impacts, as already done by Plassiard et al (2008). These results, however, are mainly focused on a back-analysis of full-scale tests and do not provide a general overview of the embankment behaviour or design guidelines.…”

Section: Numerical Modellingmentioning

confidence: 99%

“…These experiments only permitted a limited number of variations of both the geometries and impact energies to be studied, due to their complexity. Furthermore, the numerical modelling developed to study ground reinforced embankments (Carotti et al, 2000;Castiglia, 2000;Vecchiotti, 2003, 2006;Bertrand et al, 2005;Bertrand, 2006;Lambert et al, 2007Lambert et al, , 2008Peila et al, 2007;Plassiard et al, 2008) has generally been limited to the back-analysis of full-scale tests and these researches have not provided a general design procedure for this type of protection work.…”

Section: Introductionmentioning

confidence: 99%

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Design of reinforced ground embankments used for rockfall protection

Ronco

Oggeri

Peila

2009

Nat. Hazards Earth Syst. Sci.

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Abstract. The prediction of the effects of rockfall on passive protection structures, such as reinforced ground embankments, is a very complex task and, for this reason, both full-scale tests and numerical dynamic modelling are essential.A systematic set of numerical FEM models, developed in the dynamic field, has been implemented in this work to evaluate the conditions of an embankment that has been subjected to the impact of rock blocks of various sizes at different speeds. These analyses have permitted design charts to be obtained. Furthermore, a simplified analytical approach, based on an equilibrium analysis, has been proposed and its results are compared with numerical data in order to assess its feasibility. A good correspondence between the results has been obtained.

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Section: Numerical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of reinforced ground embankments used for rockfall protection

Ronco

Oggeri

Peila

2009

Nat. Hazards Earth Syst. Sci.

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“…DEM has also been used in other fields besides silos and hoppers, such as some infrastructure problems involving handling of soils or rocks. This is the case of slope protection (Kim et al, 1997;Plassiard and Donze, 2010), geotextiles (Bhandari and Han, 2010), buried pipes (Kuwata et al, 2010), or rural road pavements (Mahmoud and Masad, 2010;Shen and Yu, 2011).…”

Section: Discrete Element Methods In Buildings and Infrastructures Arementioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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Biosystem engineering is a discipline resulting from the evolution of the traditional agricultural engineering to include new engineering challenges related with biological systems, from the cell to the environment. Modern buildings and infrastructures are needed to satisfy crop and animal production demands. In this paper a review on the status of numerical methods applied to solve engineering problems in the field of buildings and infrastructures in biosystem engineering is presented. The history and basic background of the finite element method is presented. This is the first numerical method implemented and also the more developed one. The history and background of other two more recent methods, with practical applications, the computer fluids dynamics and the discrete element method are also presented. Besides, a review on the scientific and professional applications on the field of buildings and infrastructures for biosystem engineering needs is presented. Today we can simulate engineering problems with solids, engineering problems with fluids and engineering problems with particles and get to practical solutions faster and cheaper than in the past. The paper encourages young engineers and researchers to make progress these tools and their engineering applications. The capacities of all numerical methods in their present development status go beyond the present practical applications. There is a broad field to work on it. IntroductionThe present paper is a review of the numerical methods at present and their applications in solving engineering problems. The field is too wide to be considered in a single article. This is why the paper focuses on presenting the fundamentals of the most significant numerical methods that can be applied for buildings and infrastructures areas of biosystems engineering. The three next numerical methods will be considered: i) finite element method (FEM); ii) computer fluid dynamics (CFD); iii) discrete element method (DEM).In the paper the main features of these methods will be presented along with showing some examples in areas of biosystems engineering. Modern engineering can be considered to begin with the industrial revolution in the late eighteenth and early nineteenth century. From the very beginning, it has used the most powerful mathematical tools of the time in order to solve problems arising in practice. It was considered a fact that it was essential acquiring solid mathematical foundations for being a good engineer. The programs of studies from all Universities of the time prove it so. Even great figures on mathematics of the nineteenth and twentieth centuries were formally engineers. This symbiosis has produced good results for society. In the second half of XX Century, the fast development of computer science produced a great advance in numerical methods applied to physics and engineering.Based on this premise, the predictable future is that calculation and structural analysis in all fields of engineering will be based on modern numerical methods. This power...

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“…With the recent development of numerical techniques, numerical simulations have increasingly been used, in addition to field tests, 5 to study the impact of rockfalls. 6 An excellent detailed critical review of rockfall characterization and analysis method can be found from a paper by Volkwein. 7 Two parameters, the coefficient of restitution (COR) or rebound velocity and the maximum impact force, primarily determine the rockfall trajectory and the degree of damage, respectively.…”

Section: Introductionmentioning

confidence: 99%