References of "Jaspart, Jean-Pierre"
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See detailProposed design rules for iron columns reinforced by FRP
Ly, Dong Phuong Lam ULg; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg et al

in Mazzolani, F. M. (Ed.) Protection of historical buildings, Prohitech 09 (2009, June 21)

This paper presents design rules for iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. According to experimental and numerical results, it ... [more ▼]

This paper presents design rules for iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. According to experimental and numerical results, it is shown that the resistance and stiffness of iron columns can be significantly increased with the use of longitudinal FRP sheets because of the reduction of the column slenderness, but also that transverse FRP sheets should be used to prevent any local buckling of the longitudinal FRP sheets [less ▲]

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See detailExperimental and analytical investigations on the response of structural building frames further to a column loss
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

(2009, May)

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. Design requirements are proposed in ... [more ▼]

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. Design requirements are proposed in some codes but are generally not satisfactory. In particular, it is not demonstrated that, even if these requirements are respected, a structure subjected to an exceptional event will really behave properly. A European RFCS project called “Robust structures by joint ductility” has been set up in 2004, for three years, with the aim to provide requirements and practical guidelines so as to ensure the structural integrity of steel and composite structures under exceptional events through an appropriate robustness. The investigations performed at the University of Liège, as part of this European project, are mainly dedicated to the exceptional event “loss of a column in a steel or steel-concrete composite building frame”; the main objective is to develop a simplified analytical procedure to predict the frame response further to a column loss. The development of this simplified procedure is detailed in two complementary PhD theses: the thesis of Demonceau J.-F. and the thesis of Luu N.N.H. Present paper describes experimental and analytical studies carried out in [Demonceau, 2008]. In particular, a simplified analytical procedure for the prediction of the global frame response when significant membrane forces develop further to a column loss will be described; it allows: (i) to predict the development of the catenary action in a frame with joints subjected to combined bending moment and tension loads and (ii) to compute the requested rotation capacity at the joint level according to the loads applied on the frame. [less ▲]

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See detailEuropean design recommendations for simple joints in steel structures
Jaspart, Jean-Pierre ULg; Demonceau, Jean-François ULg; Renkin, S. et al

Book published by ECCS (European Convention for Constructional Steelwork) (2009)

This document intends to provide European recommendations for the design of simple joints in steel structures. Eurocode 3 Part 1-8 “Design of Connections” gives precise guidelines for the design of ... [more ▼]

This document intends to provide European recommendations for the design of simple joints in steel structures. Eurocode 3 Part 1-8 “Design of Connections” gives precise guidelines for the design of structural joints aimed at transferring bending moments. But for simple joints, information is only provided in Eurocode 3 for some specific failure modes. The way on how internal forces distribute amongst the various components within the joints is also not explicitly described. The present publication fills this gap by proposing practical guidelines for the design of simple joints commonly used in Europe. The design rules presented in this document are in full agreement with the principles of Eurocode 3, and in particular of Eurocode 3 Part 1-8. This document has been prepared at Liège University, editorially checked by Prof. D. Anderson from Warwick University and approved by the Technical Committee TC10. [less ▲]

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See detailEuropean recommendations for the design of simple joints
Jaspart, Jean-Pierre ULg; Renkin, S.; Guillaume, M. L.

in European recommendations for the design of simple joints (2009)

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See detailExperimental and analytical investigations on the behaviour of building frames further to a column loss
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Mazzolani, F.; Mistakidis, E.; Borg, R. P. (Eds.) et al Urban Habitat Constructions under Catastrophic Events (2008, October 23)

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See detailExperimental and numerical investigations on iron columns reinforced by FRP under axial compression
Ly, Dong Phuong Lam ULg; Jaspart, Jean-Pierre ULg; Demonceau, Jean-François ULg et al

in Camelbeeck, Th.; Degée, Hervé; Degrande, G. (Eds.) et al Seismic risk (2008, September 11)

This paper presents experimental and numerical investigations on iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. It is shown that the ... [more ▼]

This paper presents experimental and numerical investigations on iron columns under axial compression, strengthened with high modulus carbon fibre reinforced polymer (FRP) sheets. It is shown that the resistance and stiffness of iron columns can be increased significantly with the use of longitudinal FRP sheets as a result of the reduction of the column slenderness, but also that transverse FRP sheets should be used to prevent any local buckling of the longitudinal FRP sheets. [less ▲]

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See detailNew simplified analytical method for the prediction of global stability of composite sway frames
Ly, Dong Phuong Lam ULg; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

In the last years, the construction of taller composite buildings and larger composite industrial halls without wind bracing systems is susceptible to make global instability a relevant failure mode. This ... [more ▼]

In the last years, the construction of taller composite buildings and larger composite industrial halls without wind bracing systems is susceptible to make global instability a relevant failure mode. This one is not yet covered by EC4 [2]. This paper reflects investigations carried out of Liege University on this topic. In particular, an innovative simplified analytical method to predict the ultimate loading factor and the associated collapse mode of composite frames is derived. [less ▲]

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See detailEffect of end connection restraints on the stability of steel beams in bending
Amara, S.; Kerdal, D. E.; Jaspart, Jean-Pierre ULg

in Advanced Steel Construction (2008)

The influence of the end restraint conditions on the lateral-torsional buckling of beams is investigated in detail using finite element method. The paper focuses on the limitation of Eurocode 3 regarding ... [more ▼]

The influence of the end restraint conditions on the lateral-torsional buckling of beams is investigated in detail using finite element method. The paper focuses on the limitation of Eurocode 3 regarding the lateral bending and torsional restraint coefficients kz and kθ of the end supports. Theoretical expressions of the coefficients kz and kθ taking into account the minor axis flexural restraint at the support and the end torsional restraint respectively are presented. The introduction of new coefficients zk and kθ representing the actual support conditions in the expression of the elastic critical moment is suggested. A comparison between the elastic critical moments for various beam cross-sections, lengths and various end restraints, obtained from the finite-element method, and those derived from EC3 ENV method, in which the proposed coefficients zk and kθ are introduced, confirms the reliability of these coefficients that model the end support conditions. [less ▲]

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See detailRecent developments on composite connections: behaviour of joints subjected to sagging bending moments and presentation of a free design dedicated software
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg; Klinkhammer, Ralf et al

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

In Eurocode 4, design rules are suggested for the evaluation of the mechanical properties of structural steel-concrete composite joints (rotational stiffness, resistance and ductility). These rules cover ... [more ▼]

In Eurocode 4, design rules are suggested for the evaluation of the mechanical properties of structural steel-concrete composite joints (rotational stiffness, resistance and ductility). These rules cover situations where the joints are subjected to moments and shear forces, but in hogging regions only. Recently, researches have been conducted on the behaviour of composite joints subjected to sagging bending moments and to combined bending moments and axial loads, types of loadings which appear in composite frame further to a column loss. In the present paper, recent developments allowing to extend the EC4 design rules to joints in sagging regions (loading which can occur, for instance, in sway composite frames) are presented and the proposed method is validated through comparisons with experimental test results. Also, an easy-to-apply design software (which will be freely available), applying the rules recommended in Eurocode 4 in a safe and easy way, is described. [less ▲]

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See detailGlobal structural behaviour of a building frame further to its partial destruction by column loss
Luu, Nguyen Nam Hai; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Ofner, Robert; Beg, Darko; Fink, Josef (Eds.) et al EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

In 1969, a catastrophic event occurred in UK at the Ronal Point residential building where the progressive collapse of the building, initiated by a localized gas explosion, was observed. Further to this ... [more ▼]

In 1969, a catastrophic event occurred in UK at the Ronal Point residential building where the progressive collapse of the building, initiated by a localized gas explosion, was observed. Further to this event, some codes and standards, and in particular the British Standards, impose to the designer to ensure the structural integrity of building in order to avoid the progressive collapse of the latter further to an exceptional action. In fact, the progressive collapse of a building is the result of a change in the structural system and of the load path associated to the loss of one or more main structural members. In other words, the existing load path is suddenly modified and the loads supported by the building are reported to the foundation through an alternative load path. Accordingly, the remaining structural members are overloaded by additional loads; the latter have to be able to support these loads and to possess a sufficient ductility. In the last decade, researches on this topic were initiated at the Argenco Department of Liège University. The present paper reflects part of these activities; in particular, some investigations dedicated to the investigation of the behaviour of a frame further to a column loss are presented. In another article presented by J.F Demonceau, H.N.N. Luu and J.P Jaspart within the present conference is devoted to the investigation of the behaviour of the frame when significant membranar forces developed within the structure. In particular, in this paper, a simplified substructure which is able to simulate the behaviour of a structure further to a column loss is defined. The present paper presents the analytical methods requested to define the parameters influencing the response of the simplified substructure. [less ▲]

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See detailDevelopment of membranar effects in frame beams: experimental and analytical investigations
Demonceau, Jean-François ULg; Luu, Nguyen Nam Hai; Jaspart, Jean-Pierre ULg

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. According to Eurocodes and some ... [more ▼]

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. According to Eurocodes and some different other national design codes, the structural integrity of civil engineering structures should be ensured through appropriate measures but, in most of the cases, no precise practical guidelines on how to achieve this goal are provided. A European RFCS project called “Robust structures by joint ductility” has been set up in 2004, for three years, with the aim to provide requirements and practical guidelines allowing to ensure the structural integrity of steel and composite structures under exceptional event through an appropriate robustness. The investigations performed at Liège University, as part of this European project, are mainly dedicated to the exceptional event “Loss of a column in a steel or steel-concrete composite building frame”; the main objective is to develop a simplified analytical procedure to predict the frame response further to a column loss. The development of this simplified procedure is detailed in two complementary PhD theses: the thesis of J.-F. Demonceau and the thesis of H.N.N. Luu. The present paper describes experimental and analytical studies carried out within the first PhD thesis. In particular, a simplified analytical method allowing the prediction of the frame response with account of the membranar effects is described. [less ▲]

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See detailComposite joints in robust building frames
Jaspart, Jean-Pierre ULg; Demonceau, Jean-François ULg

(2008, July)

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional actions. Accordingly, a European RFCS ... [more ▼]

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional actions. Accordingly, a European RFCS project entitled “Robust structures by joint ductility” has been set up in 2004, for three years, with the aim to provide requirements and practical guidelines for the design of steel and composite structures under exceptional actions. In this project, the importance of the structural joints has been shown; as a particular case, these ones experience additional high tying forces after the loss of a column, as a result of the development of membrane forces in the beams located just above the damaged column. Moreover a reversal of moments occurs in some joints. In this paper design models for the evaluation of the mechanical properties of joints in such extreme situations are presented. References are made to recent tests on joints in isolation and joints in frames recently achieved at Stuttgart and at Liège University in the framework of the above-mentioned RFCS project. [less ▲]

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See detailRobustness of structures - behaviour of composite joints
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Sixth International Workshop on Connections in Steel Structures (2008, June 23)

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional loading. Accordingly, a European RFCS ... [more ▼]

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional loading. Accordingly, a European RFCS project entitled “Robust structures by joint ductility” has been set up in 2004, for three years, with the aim to provide requirements and practical guidelines to ensure the structural integrity of steel and composite structures under exceptional loading through an appropriate robustness. In this project, the importance of the structural joints has been shown; indeed, these ones experience additional high tying forces after the loss of a column, as a result of the development of membrane forces in the beams located just above the damaged column. Moreover a reversal of moments occurs in some joints. In this paper design models for the evaluation of the mechanical properties of joints in such extreme situations are presented. References are made to recent tests on joints in isolation recently achieved in the framework of the above-mentioned RFCS project. [less ▲]

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See detailDuctility requirements for the design of bolted shear connections
Henriques, José; Jaspart, Jean-Pierre ULg; Piraprez, E.

in Proceedings of the Sixth International Workshop on Connections (2008, June)

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See detailPlastic capacity of semi-compact steel sections
Lechner, A.; Kettler, M.; Greiner, R. et al

in Proceedings of the CIMS2008 - Coupled Instabilities in Metal Structures (2008, June)

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See detailA new design model for the resistance of steel semi-compact cross-sections
Boissonnade, N.; Jaspart, Jean-Pierre ULg; Oerder, R. et al

in Proceedings of EUROSTEEL 2008 (2008)

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See detailPrefabricated composite beam-to-concrete filled tube or partially reinforced-concrete-encased column connections for severe seismic and fire loadings
Bursi, Oreste; Ferrario, Fabio; Haller, Mike et al

Book published by European Commission (2008)

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See detailOn the modelling of compressed long plates related to sheet-section behaviour
Hofmeyer, H.; Jaspart, Jean-Pierre ULg

in Proceedings of the Fifth International Conference on Thin-Walled Structures (2008)

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See detailApplication of new Eurocode 3 formulae for beam-columns to class 3 hollow section members
Boissonnade, Nicolas; Weynand, K.; Jaspart, Jean-Pierre ULg

in Proceedings of the 12th International Symposium on Tubular Structures (2008)

Detailed reference viewed: 35 (4 ULg)