References of "Plumier, André"
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See detailConception parasismique dans le contexte de l’Eurocode 8
Plumier, André ULg; Degée, Hervé ULg

Learning material (2011)

Le texte qui suit rassemble des éléments nécessaires à la maîtrise du projet de construction en zone sismique : conception d'ensemble des structures, définition des données nécessaires au calcul, choix de ... [more ▼]

Le texte qui suit rassemble des éléments nécessaires à la maîtrise du projet de construction en zone sismique : conception d'ensemble des structures, définition des données nécessaires au calcul, choix de la méthode de calcul, vérifications des éléments structurels. Il contient aussi un rappel synthétique de dynamique des structures, mais ce sujet, comme d’autres, requiert la lecture d’autres ouvrages. Pour cette raison on s’est efforcé de donner aussi les références d’ouvrages de la littérature et de sites Internet qui tous apportent des informations utiles. Des mises à jour sont prévues. L’édition 2011 est la 5e version du cours de conception parasismique de l’Université de Liège. C’est une évolution de la version de 1992, consécutive à la parution en 2004 de l’Eurocode 8, Norme Parasismique Européenne, dans sa première version Euronorme ou « EN » (« EN1998-1 : 2004 »). Il est opportun qu’un cours de conception parasismique soit en phase avec les concepts et notations du document qui est un code accepté comme référence des projets dans toute l’Europe en 2011. L’édition 2011 s’appuie sur le développement des connaissances acquises au sein du Groupe Sismique de l’Université de Liège par son travail dans 15 projets de recherche européens et belges, sa contribution à des projets de construction et une participation intense au développement des règlements parasismiques Européens et nationaux : CECM, Eurocode 8, Annexes Nationales, Guide pour maisons individuelles. [less ▲]

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See detailSEISMICALLY RETROFITTING AND UPGRADING RC-MRF BY USING EXPANDED METAL PANELS
Phung Ngoc, Dung ULg; Degée, Hervé ULg; Plumier, André ULg

Scientific conference (2011, January 15)

Expanded Metal is a second product made from metal sheet by first cuttings, cold-drawing, and finally by being flattened. A research is under way at University of Liege with the aims at determining the ... [more ▼]

Expanded Metal is a second product made from metal sheet by first cuttings, cold-drawing, and finally by being flattened. A research is under way at University of Liege with the aims at determining the mechanical properties of this type of material under seismic excitations. In view of their application to building seismic retrofitting and upgrading, three approaches: analytical models, numerical simulations and experimental investigations, have been used to characterize the mechanic behavior of expanded metal sheets which are monotonically and cyclically loaded in shear. Nonlinear numerical simulations and experimental tests are used to determine the hysteretic behavior of expanded metal shear panels (EMSP), and an analytical model is then proposed, with the aims of using that to study the influence of such EMSP when they are used to retrofit and upgrade reinforced concrete moment resisting frames (RC-MRF). Many RC-MRF are then designed in two cases: (1) in accordance with only Eurocode 2 and (2) in accordance with both Eurocode 2 and Eurocode 8. Capacities of such designed structures are evaluated by using nonlinear static analysis (Pushover) and nonlinear time history analysis under different types of soils and ground motions. The efficiency of using EMSP is evaluated in terms of strength, stiffness and energy dissipation. Additionally, with the presence of EMSP, some unfavorable behavior of RC-MRF under seismic action such as soft story mechanism can be prevented. [less ▲]

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See detailPathologies et réparations structurales des constructions
Plumier, André ULg

Learning material (2011)

Le document est le support powerpoint du cours. On y met en évidence des actions sous estimée et des conceptions défectueuses; il décrit des techniques et problèmes de calcul spécifiques aux réparations ... [more ▼]

Le document est le support powerpoint du cours. On y met en évidence des actions sous estimée et des conceptions défectueuses; il décrit des techniques et problèmes de calcul spécifiques aux réparations, puis présente des techniques de renforcement structural pour les constructions en béton armé, en maçonnerie, en bois, en acier, ainsi que dans le cas de problèmes de fondation. [less ▲]

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See detailBehaviour of EMP under shear loadings
Phung Ngoc, Dung ULg; Degée, Hervé ULg; Plumier, André ULg

in Behaviour of EMP under shear loadings- SDSS 2010 (2010)

Experimental and theoretical study of expanded metal panels (EMP) has shown that they are useful for seismically retrofitting reinforced concrete moment resisting frames (RC-MRF). Although this product ... [more ▼]

Experimental and theoretical study of expanded metal panels (EMP) has shown that they are useful for seismically retrofitting reinforced concrete moment resisting frames (RC-MRF). Although this product has merit of strength and ductility, it is at present only used for non-structural applications. There is no guidance existing to help the engineers determine the mechanical properties or to indicate in which field of the structures this product can be used. With the aims at providing quantitative data for these purposes and at introducing a simplified model of EMP working in shear, description and comparison of the results of 22 monotonic and cyclic experiments of 4 profiles of EMP in small and large scale is presented. Numerical approach with FINELG, a nonlinear finite element code developed at University of Liege, is used to calibrate and simulate the tests. A good correlation between tests and numerical simulations is observed. [less ▲]

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See detailSeismic retrofitting and upgrading reinforced concrete moment resisting frames by using expanded metal shear panels
Phung Ngoc, Dung ULg; Degée, Hervé ULg; Plumier, André ULg

in Seismic retrofitting and upgrading reinforced concrete moment resisting frames by using expanded metal shear panels (2010)

Expanded Metal is a second product made from metal sheet by first cuttings, cold-drawing, and finally by being flattened. A research is under way at University of Liege with the aims at determining the ... [more ▼]

Expanded Metal is a second product made from metal sheet by first cuttings, cold-drawing, and finally by being flattened. A research is under way at University of Liege with the aims at determining the mechanical properties of this type of material under seismic excitations. In view of their application to building seismic retrofitting and upgrading, three approaches: analytical models, numerical simulations and experimental investigations, have been used to characterize the mechanic behavior of expanded metal sheets which are monotonically and cyclically loaded in shear. Nonlinear numerical simulations and experimental tests are used to determine the hysteretic behavior of expanded metal shear panels (EMSP), and an analytical model is then proposed, with the aims of using that to study the influence of such EMSP when they are used to retrofit and upgrade reinforced concrete moment resisting frames (RC-MRF). Many RC-MRF are then designed in two cases: (1) in accordance with only Eurocode 2 and (2) in accordance with both Eurocode 2 and Eurocode 8. Capacities of such designed structures are evaluated by using nonlinear static analysis (Pushover) and nonlinear time history analysis under different types of soils and ground motions. The efficiency of using EMSP is evaluated in terms of strength, stiffness and energy dissipation. Additionally, with the presence of EMSP, some unfavorable behavior of RC-MRF under seismic action such as soft story mechanism can be prevented. [less ▲]

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See detailModeling of Crack Propagation in Weld Beam-to-Column Connection Submitted to Cyclic Loading with Cohesive Zone Model
Lequesne, Cédric ULg; Plumier, André ULg; Duchene, Laurent ULg et al

in Journal of ASTM International (2010), 7(5),

During the earthquakes in Japan and California in the 1990s, cracks appeared in some weld beam-to-column connections of heavy rigid frame steel buildings. This prompted the necessary assessment of the ... [more ▼]

During the earthquakes in Japan and California in the 1990s, cracks appeared in some weld beam-to-column connections of heavy rigid frame steel buildings. This prompted the necessary assessment of the performance of weld connections in terms of rotation capacity and crack propagation. In the present study, experimental tests were performed where weld connections were submitted to cyclic loadings with increasing amplitude until a macro crack event was reached. However the crack phenomenon depends on many parameters: the geometry, the material, the welding process…. For this reason, it was interesting to develop a finite element modeling of these connections in order to complete these experiments and perform a parametric study. This paper describes the finite element model development, its material parameter identification and its comparison with experimental results. The weld connections were modeled by using three-dimensional mixed solid elements. The constitutive laws applied were elastoplastic with isotropic hardening identified for the base metal and the weld metal. Crack propagation was modeled by a cohesive zone model. The parameters of this cohesive zone model were identified by an inverse method with the modeling of three point bending tests of precracked samples performed on the base and weld metals. The fatigue damage generated by the cyclic loading was computed by the fatigue continuum damage model of Lemaitre and Chaboche, which was coupled with the cohesive zone model. [less ▲]

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See detailEtude expérimentale de la résistance de panneaux de metal déployé soumis à des solicitations cycliques de cisaillement.
Phung Ngoc, Dung ULg; Degée, Hervé ULg; Plumier, André ULg

in Experimental Study of the Resistance of Expanded Metal Panels Submitted to Cyclic Shear Tests (2010)

Experimental and theoretical study of expanded metal panels (EMP) has shown that they are useful for seismically retrofitting reinforced concrete moment resisting frames (RC-MRF). Although this product ... [more ▼]

Experimental and theoretical study of expanded metal panels (EMP) has shown that they are useful for seismically retrofitting reinforced concrete moment resisting frames (RC-MRF). Although this product has merit of strength and ductility, it is at present only used for non-structural applications. There is no guidance existing to help the engineers determine the mechanical properties or to indicate in which field of the structures this product can be used. With the aims at providing quantitative data for these purposes and at introducing a simplified model of EMP working in shear, description and comparison of the results of 22 monotonic and cyclic experiments of 4 profiles of EMP in small and large scale is presented. Numerical approach with FINELG, a nonlinear finite element code developed at University of Liege, is used to calibrate and simulate the tests. A good correlation between tests and numerical simulations is observed. [less ▲]

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See detailContributions to the knowledge about the seismic behaviour of typical Belgian masonry houses
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the 8th International Masonry Conference (2010)

Detailed reference viewed: 66 (8 ULg)
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See detailOn the use of locally composite columns to improve the seismic robustness of reinforced concrete frames
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the 8th Sismica Conference (2010)

Detailed reference viewed: 22 (6 ULg)
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See detailINERD software: a new design tool to improve the robustness of RCMRF under Earthquake loading
Zanon, R.; Sommavilla, M.; Labory, F. et al

in Proceedings of the COST Action C26 Final Conference - Urban Habitat constructions under catastrophic events (2010)

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See detailAn innovative solution to improve the seismic robustness of reinforced concrete frames
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the 14ECEE Conference (2010)

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See detailTesting of Expanded Metal Sheets under Cyclic Shear Loadings
Phung Ngoc, Dung ULg; Degée, Hervé ULg; Plumier, André ULg

in 8th National Conference of Theoretical and Applied Mechanics NCTAM 2009 (2009)

Abstract: With the aims at determining the mechanical properties of Expanded Metal Sheet under seismic excitations, the research on Expanded Metal Sheet has been implementing at University of Liege ... [more ▼]

Abstract: With the aims at determining the mechanical properties of Expanded Metal Sheet under seismic excitations, the research on Expanded Metal Sheet has been implementing at University of Liege. Firstly, the square and rectangular sheets worked in monotonic shear loading was thoroughly studied by E.Pecquet[1]. In his study, there are three approaches used to determine the mechanic behavior of expanded metal sheets monotonically loaded in shear, that is, analytical models, numerical simulations and experimental investigations were performed and compared simultaneously. Secondly, the same dimensions of the sheets will be studied under cyclic shear loading. In this research, non-linear numerical stimulations and experimental investigation will be used to determine the properties of expanded metal sheets under cyclic shear loads. The analytical models will be proposed with the aims at modeling the sheets in Reinforced Concrete Frames, the next step of this study. Numerical stimulations are implemented with FINELG, a non linear finite element code. Expanded Metal Sheet Experiments under reverse loading are to be carried out at Laboratory of University of Liege. Experimental Investigations will be compared with numerical stimulations to propose an analytical model, hysteric loop for this type of material under cyclic loading. [less ▲]

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See detailBehavior of heavy sections welded moment connections
Plumier, André ULg; Lequesne, Cédric ULg; Degée, Hervé ULg et al

in Proceedings of the STESSA 2009 Conference (2009)

Test results on moment connections of heavy sections are presented. Flange thickness are up to 32 mm in beams and up to 97 mm in columns. Different beam to column moment ratios, shear panel design, method ... [more ▼]

Test results on moment connections of heavy sections are presented. Flange thickness are up to 32 mm in beams and up to 97 mm in columns. Different beam to column moment ratios, shear panel design, method of connecting shear tab, welding methods and consumables are considered. Fracture of the welds, cracking of the shear tab weld, ductile tearing from weld access holes and buckling of the beam flange are ob-served. Practical conclusions are derived. [less ▲]

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See detailEtude pilote relative à l'évaluation du risque sismique pour la ville de Liège
Plumier, André ULg; Degée, Hervé ULg

in Actes des journées APS-AFPS 2008 (2009)

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See detailImproving the seismic robustness of reinforced concrete frames by using locally hybrid steel-concrete columns
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the STESSA 2009 Conference (2009)

The proposed concept consists in placing a steel profile with limited size inside the reinforced concrete column of the first level of the building. This profile is not considered for the design and is ... [more ▼]

The proposed concept consists in placing a steel profile with limited size inside the reinforced concrete column of the first level of the building. This profile is not considered for the design and is essen-tially assumed to act as a safety belt activated only in case of deficiencies of the concrete under earthquake action, providing thus the requested robustness and limiting the risk of soft-storey mechanisms even in the most unfavorable conditions. Theoretical, experimental and numerical investigations summarized in the pre-sent contribution are aiming at demonstrating the efficiency of the concept. [less ▲]

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See detailParametric study of ductile moment resisting frames. First step for Eurocode 8 calibration.
Sanchez-Ricart, L.; Plumier, André ULg

in Earthquake Engineering & Structural Dynamics (2008)

A parametric study of 13,608 ductile Moment-Resisting Steel Frames (MRSF) designed according to Eurocode 3 and Eurocode 8 is performed. A flowchart for the evaluation of the seismic-resistant capacity of ... [more ▼]

A parametric study of 13,608 ductile Moment-Resisting Steel Frames (MRSF) designed according to Eurocode 3 and Eurocode 8 is performed. A flowchart for the evaluation of the seismic-resistant capacity of the designed frames is developed based on the N2 method. The design structural overstrength, the ductility supply, the plastic redistribution parameter, the supply reduction factor and the performance ratio of the frames under study are analysed. The 13,608 designed frames under study have performance ratios higher than one mostly due to the high values of design structural overstrength, showing that the seismic supply produced by Eurocode 3 and Eurocode 8 restrains are always higher than the seismic demand. [less ▲]

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See detailBackground considerations on masonry structures for the preparation of the Belgian national annex to Eurocode 8
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the Conference "Seismic Risk - Earthquake in North-Western Europe" (2008)

This contribution summarizes considerations developed to allow a reasonable and consistent definition of the national parameters to be introduced in the Belgian national annex to chapter 9 of Eurocode 8 ... [more ▼]

This contribution summarizes considerations developed to allow a reasonable and consistent definition of the national parameters to be introduced in the Belgian national annex to chapter 9 of Eurocode 8 dealing with seismic design of masonry structures. The different aspects considered are material properties (resistance and ductility), detailing of wall-wall and wall-floor connections and rules for simple masonry buildings. The result is a set of rules consistent with the national practice and defining (i) what is allowed in Belgium for the different seismic zones, (ii) minimal requirements for simple non-engineered buildings and (iii) a procedure that can be followed to improve these rules for materials and structural systems exhibiting better properties than the minimal requirements of Eurocode 8. [less ▲]

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See detailGuidelines for Seismic Vulnerability Reduction in the Urban Environment
Plumier, André ULg

Book published by IUSS Press (2007)

Detailed reference viewed: 46 (4 ULg)