Les Eurocodes 2 et 4 – Partie Résistance au feu – Structures en béton et structures mixtes acier-bétonFranssen, Jean-Marc ![]() Conference given outside the academic context (2006) Detailed reference viewed: 29 (0 ULg) A critical view on the parametric fire model of Eurocode 1Franssen, Jean-Marc ![]() Scientific conference (2006, May 31) Detailed reference viewed: 12 (0 ULg) Calculation of temperature in fire-exposed bare steel structures: Comparison between ENV 1993-1-2 and EN 1993-1-2Franssen, Jean-Marc ![]() in Fire Safety Journal (2006), 41(2), 139-143 A comparison is made between the formula presented in ENV 1993-1-2 and EN 1993-1-2 for calculating temperature in bare steel structures subjected to fire. The ratio between the radiative energy considered ... [more ▼] A comparison is made between the formula presented in ENV 1993-1-2 and EN 1993-1-2 for calculating temperature in bare steel structures subjected to fire. The ratio between the radiative energy considered in each formula is first calculated for 377 commercially available sections. The evolution of the steel temperature is then calculated in 4 different representative sections. On the basis of these comparisons and taking into account the fact that the load-bearing capacity has to be ensured in steel members, it does not appear that significant modifications in the safety level have been introduced from the ENV to the EN version of Eurocode 3. (C) 2005 Elsevier Ltd. All rights reserved. [less ▲] Detailed reference viewed: 27 (1 ULg) Some comments on the Parametric Fire Model of Eurocode 1; ; et al Conference (2006) In this paper, the modifications that have been recently introduced in the parametric fire model of Eurocode 1 are presented. The reasons behind these modifications are given. Some Problems that have been ... [more ▼] In this paper, the modifications that have been recently introduced in the parametric fire model of Eurocode 1 are presented. The reasons behind these modifications are given. Some Problems that have been discovered in the present formulation are highlighted, namely the fact that the model is not continuous and the fact that the heat release of wood that has been used for the calibration of the model is not consistent anymore with the value that is now recommended in the Eurocode. A proposal is made that makes the model continuous. A new calibration of this modified model has been made on the base of the now recommended value of the heat release of wood with comparison to the results of some 50 full scale experimental fire tests. [less ▲] Detailed reference viewed: 28 (4 ULg) SiF'06, Proceedings of the 4th international workshop Structures in fire - Vol. 1 & 2; Franssen, Jean-Marc ; Book (2006) Detailed reference viewed: 75 (3 ULg) Proposal to the Eurocode 3 for the lateral-torsional buckling of stainless steel I-beams in case of fire; ; et al in Vila Real, P. M. M. (Ed.) Proceedings of the 4th International Workshop Structures in Fire (2006) Detailed reference viewed: 21 (2 ULg) Numerical validation of an improved proposal to the Eurocode 3 for lateral-torsional buckling of steel beams subjected to fire; ; et al in Vila Real, P. M. M. (Ed.) Proceedings of the 4th International workshop Structures in Fire (2006) Detailed reference viewed: 18 (1 ULg) Numerical analysis of the effect of localised fires on composite steel concrete buildingsFranssen, Jean-Marc ; ; Dotreppe, Jean-Claude ![]() in Vila Real, P. M. M. (Ed.) Proceedings of the 4th International workshop Structures in Fire (2006) Detailed reference viewed: 14 (3 ULg) Numerical modelling of axially loaded stainless steel members under fire conditionsFranssen, Jean-Marc ; ; et alin Camotim, D. (Ed.) Stability and ductility of steel structures (2006) Detailed reference viewed: 10 (1 ULg) Thermal stresses in glazing systems in buildings; ; et al in Vila Real, P. M. M. (Ed.) Proceedings of the 4th International workshop Structures in Fire (2006) Detailed reference viewed: 28 (1 ULg) Design of Steel Structures subjected to Fire. Background and Design Guide to Eurocode 3. 2nd éditionFranssen, Jean-Marc ; Book published by Les édtions de l'Université de Liège (2006) The information that is necessary to perform the fire design of a structure made of a particular material, say a steel structure, is: a) The bases of design, stated in EN 1990. b) The mechanical actions ... [more ▼] The information that is necessary to perform the fire design of a structure made of a particular material, say a steel structure, is: a) The bases of design, stated in EN 1990. b) The mechanical actions, i.e. the forces, acting on the structure in the fire situation. Some information is found in EN 1991-1-2, but explicit reference is also made to EN 1991-1-1 that is therefore also necessary. c) The thermal actions, i.e. the fire and the heat flux induced in the elements by the fire. The information is in EN 1991-1-2. d) The rules for determining the temperatures in the structure during the course of the fire. They are given in the fire part of the relevant material eurocode, e.g. EN 1993-1-2 for a steel structure. e) The rules for determining the structural stability. They are given in the fire part of the relevant material Eurocode, e.g. EN 1993-1-2 for a steel structure, but reference is often made to the cold part of the same material Eurocode, EN 1993-1-1 for a steel structure. This layout is valid in general but some exceptions do exist: the structural stability of timber elements, for example, does not necessarily require the determination of the temperatures in the element and step d) may be omitted; the same holds if the fire resistance is determined from tabulated data, for concrete elements for example. The rest of this book is organised according to this layout, see Fig. 1-2: Chapter 2 deals with bases of design and mechanical loads. Chapter 3 deals with thermal attack from the fire. Chapter 4 deals with thermal analysis by simple calculation model. Chapter 5 deals with mechanical analysis by simple calculation model. Chapter 6 deals with the design of joints. Chapter 7 deals with thermal and mechanical analysis by the advanced calculation model. Chapter 8 gives four design examples showing how a complete and sometimes complex structure can be designed using the concept of element or substructure analysis. [less ▲] Detailed reference viewed: 87 (1 ULg) Fire resistance of timbers from tropical countries and comparison of experimental charring rates with various models; Dotreppe, Jean-Claude ; Franssen, Jean-Marc ![]() in Construction & Building Materials (2005), 19(5), 376-386 Tropical hardwood species are more and more used in the field of construction due to the particular qualities they can offer. Presently it is no longer possible to envisage the development of construction ... [more ▼] Tropical hardwood species are more and more used in the field of construction due to the particular qualities they can offer. Presently it is no longer possible to envisage the development of construction materials and products without taking into consideration the problem of their fire behaviour, and more particularly of their fire resistance. In the case of timber elements, this characteristic is mainly influenced by the charring rate of the external layers of the element. On the other hand this parameter is influenced by the density of the material. Limited information is available on the charring rate of tropical hardwood species. Therefore experimental investigations have been conducted at the University of Liege to study this characteristic. Seven tropical and three timber species from temperate countries have been examined. Two types of test have been used, one on small specimens, the other on a construction element made of one single material. In the first type, 20 specimens have been manufactured by gluing several laminates together. The specimens were instrumented with four thermocouples inserted at various depths in four different laminates. In the second type, a non-loaded wall made of 12 glued-laminated spruce beam profiles was instrumented with thermocouples embedded at different depths in the panel for the evaluation of the charring rate. Experimental charring rates have been compared with the results derived from Eurocode EC5-1.2 recommendation [ENV 1995-1-2. Eurocode 5: Design of timber structures - Part 1-2: General rules - Structural fire design. European prestandard; 1994], Australian standard AS 1720.4 relation [AS 1720.4. Timber structures Part 4: fire resistance of structural timber members. North Sydney, Australia: Standards Australia; 1990] and White's model [Charring rates of different wood species. PhD dissertation. Madison University of Wisconsin, Madison, WI, 1988; White RH, Erik V, Nordheim EV. Charring rate of wood for ASTM El 19 exposure. Fire Technol 1992-28(1)]. This comparison shows that the results obtained from these three models are not entirely satisfactory for tropical hardwood species. Therefore a new model has been proposed. (C) 2004 Elsevier Ltd. All rights reserved. [less ▲] Detailed reference viewed: 72 (6 ULg) Structures in Fire: yesterday, today and tomorrowFranssen, Jean-Marc ![]() in Gottluk, D T; Lattimer, B Y (Eds.) Fire Safety Science - Proceedings of the Eighth International Symposium (2005) This paper presents the author's view on various methods used for the evaluation of the behaviour of structures submitted to fire, namely experimental testing, tabulated data, simple calculation methods ... [more ▼] This paper presents the author's view on various methods used for the evaluation of the behaviour of structures submitted to fire, namely experimental testing, tabulated data, simple calculation methods and numerical simulation. The evolution during the last decades, and the pertinence of these methods in different situations are discussed. The challenges that scientists and researchers are facing now and the problems that will need be addressed in the future are presented. [less ▲] Detailed reference viewed: 30 (3 ULg) Fire safety engineering analysis of a super market structure composed of cambered cellular beamsFranssen, Jean-Marc ; ; et alin Hoffmeister, B.; Hechler, O. (Eds.) Proceedings of the 4th European Conference on Steel and Composite Structures (EUROSTEEL 2005) (2005) Detailed reference viewed: 25 (1 ULg) Effect of localised fires on continuous steel beamsFranssen, Jean-Marc ; ; Dotreppe, Jean-Claude ![]() in Hoffmeister, B.; Hechler, O. (Eds.) Proceedings of the 4th European Conference on Steel and Composite Structures (EUROSTEEL 2005) (2005) Detailed reference viewed: 24 (2 ULg) Design of Structural Fire Protection and Fire Protection SystemsFranssen, Jean-Marc ![]() in Hosser, Dietmar (Ed.) Proceedings of the International Fire protection Symposium (2005) Detailed reference viewed: 13 (1 ULg) Failure of a Tied-Arch Bridge Submitted to a Severe Localized FireDotreppe, Jean-Claude ; ; Franssen, Jean-Marc ![]() in Proceedings of the IABSE Symposium Lisbon (2005) Detailed reference viewed: 79 (2 ULg) Progressive load redistribution in continuous concrete beams and slabs under fire conditionsDotreppe, Jean-Claude ; ; Franssen, Jean-Marc ![]() in Proceedings of the fib Symposium "Keep concrete attractive" Vol.2 (2005) Detailed reference viewed: 15 (3 ULg) Fire resistance of unrestrained welded steel beams submitted to lateral-torsional buckling; ; et al in Hoffmeister, B.; Hechler, O. (Eds.) Proceedings of the 4th European Conference on Steel and Composite Structures (EUROSTEEL 2005) (2005) Detailed reference viewed: 11 (1 ULg) Plastic Analysis of Concrete Structures Subjected to FireFranssen, Jean-Marc ![]() in Gambarova, P. G. (Ed.) Proceedings of the Workshop "Pire Design of Concrete Structures: What now? What next?" (2005) Detailed reference viewed: 40 (7 ULg) |
||