Thickness of zero-strength layer in timber beam exposed to fuel-controlled parametric fires
نویسندگان
چکیده
Abstract Fire resistance is one of the essential requirements to be fulfilled in design timber structures. For this purpose, a reduced cross-section method given European standards, Eurocodes. The based on assumption that an initial, rectangular exposed fire conditions reduces effective cross-section, which has material properties as at room temperature. part with no determined by sum two parameters, namely charring depth and thickness zero-strength layer. Eurocodes give value latter only for standard exposure, curves proposed same standards. Therefore, present paper examines layer case 46 different fuel-controlled parametric exposures applied beam from three sides. A four-phase numerical analysis purpose includes use hygro-thermal model mechanical determine temperatures over conditions, respectively. results show takes values between 7.9 18.4 mm exposures. Since it clearly dependent parameters describing curve, five equations are can used determination
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ژورنال
عنوان ژورنال: Wood Science and Technology
سال: 2023
ISSN: ['0043-7719', '1432-5225']
DOI: https://doi.org/10.1007/s00226-023-01480-8