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A fire resistance design method for thin-walled steel studs in wall panel constructions exposed to parametric fires |
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| Affiliation: | 1. TNO, Lange Kleiweg 137, 2288 GJ, Rijswijk, The Netherlands;2. University of Technology Delft, Faculty of Civil Engineering, The Netherlands;3. Munitions Safety Information Analysis Center (NATO), B 1550, BZ S054, B-1110, Brussels, Belgium;1. Department of Mechanical Engineering, Instituto Superior Técnico, Technical University of Lisbon (TULisbon), Av. Rovisco Pais, 1049-001 Lisboa, Portugal;2. Department of Civil Engineering, Architecture and Georesources, Centro de Petrologia e Geoquímica, Instituto Superior Técnico, Technical University of Lisbon (TULisbon), Av. Rovisco Pais, 1049-001 Lisboa, Portugal;1. Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining & Technology Xuzhou 221116, China;2. Xuzhou Key Laboratory for Fire Safety of Engineering Structures, China University of Mining & Technology, Xuzhou 221116, China;3. Shanghai EcoBuildings Engineering & Construction Co. Ltd., Shanghai 201199, China |
| Abstract: | This paper investigates the applicability of a simple fire resistance design method for axially loaded thin-walled steel studs in wall panel assemblies when exposed to parametric fires from one side. The simple method includes calculations of cross-section temperatures and ultimate load carrying capacities at elevated temperatures. The simplified calculation method for heat transfer in the cross-section is based on dividing the cross-section into a number of segments. The thermal properties of these layers are based on weighted averages of the thermal properties of the components contained within. The structural capacity calculation method is based on the Direct Strength Method. Results from the design method are compared with the results from Finite Element simulations for heat transfer and structural analysis (236 models). The calculation results are in good agreement with the simulation results and the proposed method may be used in performance-based fire engineering design of such construction. |
| Keywords: | Thin-walled steel studs Wall panel Parametric fire Design method Fire resistance Performance-based fire engineering |
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