WG1 Fire Resistance. Introduction. COST C26 Workshop Prague. Ime avtorja František Wald Czech Technical University in Prague. Maribor, mesec 2004

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1 WG1 Fire Resistance Introduction COST C26 Workshop Prague Ime avtorja František Wald Czech Technical University in Prague Maribor, mesec 2004

2 List of Contents Introduction of WG Fire resistance Quality of today prediction Fire test Ostrava 2006 Local fire Compartment fire WG1 Session at Praha Workshop WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

3 Introduction WG 1 Fire Resistance Cooperation of national projects in the field of structural fire research Structural Integrity sufficient resistance, stiffness and deformation capacity of the structure under accidental actions and to enhance structural safety under extreme conditions. WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

4 Fire Design Fire engineering approach performance based design Fire scenario Heat released from the fire and the resulting atmospheric temperatures within the building Transfer of heat into structure Conduction, convection and radiation the rise in temperature of the structural materials Mechanical loading Differs from the maximum mechanical loading for ambient temperature design Structural response At elevated temperature Integration of models WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

5 WG1 Delft Meeting Presentations of national projects 1. Ian Burgess, UK: Robustness of connections in fire 2. Ulf Wickström, Sweden: Heat transfer from fires to structures 3. Milan Veljkovic, Sweden: Behaviour of of thin-walled steel columns in fire 4. Aldina Santiago, Portugal: 3D behaviour of steel joints under a natural fire and its influence on structural response 5. Nuno Lopes, Portugal: Behaviour of stainless steel structural elements in case of fire 6. Beatrice Faggiano, Italy: Post-earthquake Fire Resistance of Moment Resisting Steel Frames 7. Gordon Geißler, Germany: Aspects of material modelling of wood and concrete 8. Raul Zaharia, Romania: Fire design of composite steel-concrete columns 9. Kimon Thomopoulos, Greece: Aluminium structures 10. Zenon Drabowicz, Poland: Pre-stressed bolted steel connections under high temperature loading 11. Arnoud Breunese, The Netherland: Presentation of Efectis Nederland 12. Martin Gillie, UK: The Fire Safety Engineering Group in University of Edinburgh 13. Roland Abspoel, The Netherland: Sensibility of Plate Girders in relation to fire 14. František Wald, Czech Republic: Fire test on structure in Ostrava, May 2006 WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

6 Main Research Topics of National Projects from WG1 Delft Meeting Fire modeling Connection modelling Member behaviour Material simulation Fire after earthquake Global analyse WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

7 List of Contents Introduction of WG Fire resistance Quality of today prediction Fire test Ostrava 2006 Local fire Compartment fire WG1 Session at Praha Workshop WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

8 Fire Test Ostrava 2006 Local fire Column temperature Compartment fire Connections temperature Internal forces Temperature of external steelwork Sandwich panel connection Composite timber-concrete beam Timber light panel WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

9 Plan Local Fire Column temperature Window Section WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

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47 Plan Local fire Window Section Temperature of beams Temperature of secondary beam, C Temperature of primary beam, C 600 Prediction MeasuredTC2 TC2 TC3 400 TC1 400 Predicted Measured TC Measured TC Time, min Time, min WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

48 Compartment Fire Prediction of Gass Temperature 1000 Gas temperature, C Parametric curve Measured in front of fire comp. Measured back of fire comp. Zone model Time, min WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

49 270 M Q Compartment Fire Horizontal forces ST14 ST16 ST10 ST12 ST13 ST ST9 ST rd floor 270 Horizontal force (kn) 2nd floor ST6 ST8 ST5 ST st floor 1st floor rd floor ST2 ST4 ST1 ST Time (min) nd floor -300 WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

50 Compartment Fire Temperature of beam to beam connection from gas temperature Connection C TC12 P10-70 x x M20 TC11 IPN 180 IPN TC11 and TC Temperature, C Average gas temp. TG2, TG3 Calculated by section factor of connected element Measured temperature, in bolt, TC Calculated from the lower flange at the mid span of the beam, eq. (2) Calculated from the lower flange at the mid span of the beam, eq. (3) Time, min WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

51 List of Contents Introduction of WG Fire resistance Quality of today prediction Fire test Ostrava 2006 Local fire Compartment fire WG1 Praha Workshop Session WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

52 WG1 Praha Workshop Session Composite steel to concrete structures, Tan Kang Hai Connection modelling, I. Burgess Members behaviour, N. Lopes Fire after earthquake, B. Faggiano Global analyses, M. Gillie State of the art and invitation to poster session, Y. Wang Poster session WG1 Fire Resistance, Introduction, COST C26 Praha Workshop, 2007 / František Wald

53 Thank you for your attention František Wald Ime avtorja Czech Technical University in Prague Maribor, mesec 2004