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See detailComponent method for steel column base plates
Wald, F.; Sokol, Z.; Steenhuis, C. M. et al

in Heron (2008), 53(1/2),

This paper presents the application of the component method to steel column bases. The decomposition of the connection into components is described. An analytical model is presented to determine the ... [more ▼]

This paper presents the application of the component method to steel column bases. The decomposition of the connection into components is described. An analytical model is presented to determine the moment resistance and the rotational stiffness of column bases under axial forces. The analytical model is verified with test results. A sensitivity study of the base plate thickness and the anchor bolt length is presented. [less ▲]

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See detailSteel column base classification
Jaspart, Jean-Pierre ULg; Wald, F.; Weynand, K. et al

in Heron (2008), 53(1/2),

The influence of the rotational characteristics of the column bases on the structural frame response is discussed and specific design criteria for stiffness classification into semi-rigid and rigid joints ... [more ▼]

The influence of the rotational characteristics of the column bases on the structural frame response is discussed and specific design criteria for stiffness classification into semi-rigid and rigid joints are derived. The particular case of an industrial portal frame is then considered. [less ▲]

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See detailRed-eared Slider Turtles (Trachemy scripta elegans) Introduced to French Urban Wetlands . An Intergrated Research and Conservation Program.
Teillac-Deschamps, Pauline; Delmas, Virginie; Lorrillière, Romain et al

in Herpetological Conservation (2008), 3

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See detailLa ville. Un dénominateur commun.
Prévôt-Julliard, Anne-Caroline; Servais, Véronique ULg

in Garnier, Lisa (Ed.) Entre l'Homme et la nature, une démarche pour des relations durables. (2008)

Common sense reprensent nature as wild places, apart and far from human influence. But fauna and flora are present in cities. The paper asks whether it is possible to use the relationship with this ... [more ▼]

Common sense reprensent nature as wild places, apart and far from human influence. But fauna and flora are present in cities. The paper asks whether it is possible to use the relationship with this ordinary nature to have people living in cities more interested in conservation. [less ▲]

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See detailA systematic procedure to predict flows induced by major dysfunctions on complexes or cascades of dams
Dewals, Benjamin ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 3rd IAHR-International Symposium on Hydraulic Structures (2008)

Hazard analysis of dams arranged in complex or in cascade may involve the assessment of a large number of different scenarios of combined failures. However, a tremendous computation time would be needed ... [more ▼]

Hazard analysis of dams arranged in complex or in cascade may involve the assessment of a large number of different scenarios of combined failures. However, a tremendous computation time would be needed to perform a detailed modeling of the flows generated by all possible scenarios. Therefore, the present paper describes a rational methodology for analyzing the flows induced by the most relevant incidents occurring on a complex or in a cascade of dams and reservoirs. The methodology combines several hydrodynamic models, including the twodimensional flow solver WOLF 2D and a simplified lumped hydrodynamic model, to simulate (i) the flows induced on the dams complex, (ii) the potential breaching in cascade of other dams, as well as (iii) the propagation of the flood wave in the whole downstream valley. The application of the methodology to a practical case study involving a complex of five dams is also described. [less ▲]

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See detailAn explicit projection method for solving incompressible Navier-Stokes equations
Detrembleur, Sylvain ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 2nd International Junior Researcher and Engineer Workshop on Hydraulic Structures (2008)

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See detailAutomatic shape optimization with GAs and a 2D free surface flow solver
Erpicum, Sébastien ULg; Dewals, Benjamin ULg; Pirotton, Michel ULg

in Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering (2008)

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See detailDam-break flow computation using high resolution DEM
Erpicum, Sébastien ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in Hogge, Michel; Van Keer, R.; Noels, L. (Eds.) et al Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering (2008)

Dam-break flow computation is a task of prime interest in the scope of risk analysis processes related to dams and reservoirs. High resolution Digital Elevation Models (DEMs) available today provide ... [more ▼]

Dam-break flow computation is a task of prime interest in the scope of risk analysis processes related to dams and reservoirs. High resolution Digital Elevation Models (DEMs) available today provide extremely dense and accurate topography information in the valley downstream of these structures, even in urban area. In this paper, a 2D finite volume flow solver, able to deal with these DEMs, is presented in details. Validation examples are comprehensively described. [less ▲]

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See detailDetailed 2D numerical modeling for flood extension forecasting
Erpicum, Sébastien ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in Proceedings of the 4th International Conference on Fluvial Hydraulics: River Flow 2008 (2008)

In the global framework of recurrent large flood events all over the world and in Europein particular, relevant and detailed inundation maps represent a tool of prime interest fordecision makers ... [more ▼]

In the global framework of recurrent large flood events all over the world and in Europein particular, relevant and detailed inundation maps represent a tool of prime interest fordecision makers, emergency services or insurance companies. In 2003 in Belgium, following a Regional Government decision, hydraulic 2D numerical modelling has been chosen to compute inundation maps on 800 km of the main rivers of the Walloon Region, using high resolution Digital Elevation Models. The present paper covers a detailed description of the state-of-the-art 2D finite volume model used to fulfil this task. As a part of this project, the model has been extensively validated by comparisons with observations during recent real flood events. It shows a very good agreement with observations, in particular regarding free surface elevations. Following this first step toward flood management, the Belgian National project “ADAPT” is presented. It aims to develop an efficient decision support tool for the integrated assessment ofadaptation measures against climate change induced flooding. In this scope, the model has been applied to predict inundations induced by floods, taking into account different climate change scenarios. The results of these simulations serve as input for a subsequent economic, social and ecological analysis by other scientific research teams. [less ▲]

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See detailModelling the vertical spincasting of large bimettalic rolling mill rolls
Studer, Léo ULg; Detrembleur, Sylvain ULg; Habraken, Anne ULg et al

in Proceedings of the Second International Conference on Advances in Solidification Processes (ICASP-2) (2008)

In order to take into account the dynamic effects of molten metal during solidification, a methodology is presented to interface a metal solidification solver with a specifically developped flow dynamics ... [more ▼]

In order to take into account the dynamic effects of molten metal during solidification, a methodology is presented to interface a metal solidification solver with a specifically developped flow dynamics solver. [less ▲]

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See detailNumerical analysis of coupled mechanical and hydraulic effects induced by a blood pressure meter
Paulus, Raphaël ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering (2008)

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See detailNumerical modelling and theoretical analysis of geometrically-controlled flow instabilities in rectangular basins
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Pirotton, Michel ULg

in Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering (2008)

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See detailAudio-visuel et Apprentissage
Leclercq, Dieudonné ULg

Learning material (2008)

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See detailLandslide Detection Methods, Inventory Analysis and Susceptibility Mapping Applied to the Tien Shan, Kyrgyz Republic.
Danneels, Gaëlle; Havenith, Hans-Balder ULg; Strom, A. et al

in Proc. of the First World Landslide Forum (2008)

This paper presents results of the last five years of landslide detection and landslide susceptibility mapping in the Central and Southern Tien Shan. Landslide inventories have been compiled for areas of ... [more ▼]

This paper presents results of the last five years of landslide detection and landslide susceptibility mapping in the Central and Southern Tien Shan. Landslide inventories have been compiled for areas of major interest in the Kyrgyz Republic. For those areas, landslides were first mapped manually using KFA satellite images and aerial photographs. Recently, a landslide detection method has been developed in order to map landslides automatically. This method is based on a neural network scheme applied to detect particular slope failure features from remote sensing data. Multi-spectral and/or panchromatic ASTER and SPOT images as well as digital elevation models (DEMs) are used as inputs. This automatic method is designed to map medium-size mass movements (105-107 m3). This approach supplements the manual mapping of large slope failures and helps to complete the inventory of mass movements and related landslide susceptibility/hazard maps for large areas within the Tien Shan. Size-frequency analyses have been applied to the two existing regional landslide inventories. These size-frequency analyses revealed the incompleteness of the respective inventories (in the low-size domain) as well as regional and local differences due to natural and anthropogenic influences. To be able to perform reliable susceptibility and size-frequency analyses, the completed inventories need to be verified. At present, we perform local verification by manual mapping and control, but automatic verification methods are being developed. They will also allow us to determine the level of uncertainties. Ongoing research is focused on the propagation of uncertainties throughout the chain of processing. [less ▲]

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See detailFinite element modelling of thermo-elasto-plastic water saturated porous materials
Luison, Loris; François, Bertrand ULg; Bortolotto, Roberto et al

Poster (2008)

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See detailThermo-plasticity of soils at various saturation states: a constitutive model
François, Bertrand ULg; Laloui, Lyesse

in 3rd International Workshop of Young Doctors in Geomechanics (2008)

This paper presents a highly-coupled thermo-plasticity model for unsaturated soils. The effect of temperature on the mechanics of unsaturated soils is briefly addressed. Then the equations of the ... [more ▼]

This paper presents a highly-coupled thermo-plasticity model for unsaturated soils. The effect of temperature on the mechanics of unsaturated soils is briefly addressed. Then the equations of the developed model, so-called ACMEG-TS, are detailed. Finally, the model is validated by the means of comparisons with experiments. This constitutive model constitutes an effective tool for modelling the thermo-hydro-mechanical (THM) behaviour of geomaterials involved in the confinement of nuclear waste disposal. [less ▲]

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See detailUn modèle de comportement thermo-plastique pour les sols-non-saturés: Application aux stockages de déchets nucléaires.
François, Bertrand ULg

in 26eme Rencontres Universitaires de Génie Civil (2008)

Un modèle constitutif thermo-hydro-mécanique dédié aux sols fins a été développé afin de prédire le comportement des géomatériaux intervenant dans la problématique du confinement des déchets nucléaires en ... [more ▼]

Un modèle constitutif thermo-hydro-mécanique dédié aux sols fins a été développé afin de prédire le comportement des géomatériaux intervenant dans la problématique du confinement des déchets nucléaires en couche géologique profonde. Ce modèle considère l’aspect couplé des processus thermique, hydrique et mécanique. Les équations constitutives sont présentées. L’implémentation de cette loi de comportement dans deux logiciels d’éléments finis a permis une étude rigoureuse de plusieurs scénarios rencontrés dans les sols entourant les futurs déchets radioactifs. Les enseignements de chacune de ces études ainsi que l’apport du modèle utilisé sont présentés. [less ▲]

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See detailEffects of systemic versus local gentamicin on the inner ear in the Atlantic cod, Gadus morhua (L.), relevance for fish hearing investigations.
Faucher, Karine ULg; Aas-Hansen, Øyvind; Damsgard, B. et al

in Hearing Research (2008), 240(1-2), 12-21

Fish models are increasingly being used for hearing research investigations. Aminoglycoside antibiotics that are used for damaging the inner ear hair cells can have systemic side effects leading to death ... [more ▼]

Fish models are increasingly being used for hearing research investigations. Aminoglycoside antibiotics that are used for damaging the inner ear hair cells can have systemic side effects leading to death of study animals. This study aimed to compare two methods: (i) systemic (intravenous) and (ii) local (intrasaccular) gentamicin administration for induction of inner ear hair cell damage in the Atlantic cod, Gadus morhua (L.). Hair cell damage was assessed using scanning electron microscopy; hair cell density, prevalence of immature hair cells and kinocilia length were measured. Gentamicin-treated fish were compared with control and sham fish. Intravenous gentamicin led to dose-dependent mortality caused by nephrotoxicity. The only visible effect after treatment was more immature hair cells and shorter kinocilia, the effect on hair cell density was equivocal. Following intrasaccular gentamicin treatment, fish mortality was negligible, and hair cells were damaged regardless of dose. Here, we observed decreased hair cell density, high prevalence of immature hair cells, and significantly shortened kinocilia. Conclusion: intrasaccular injection is preferable to intravenous injection of gentamicin for the study of ototoxicity in the Atlantic cod. [less ▲]

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