The evaluation of actual fire resistance limits of steel structures exposed to real fire loading
نویسندگان
چکیده
Introduction . The fire resistance limits of load-bearing and enclosing structures can be identified using the method heat-and-mass transfer calculation in case fire. multifactorial nature nonlinearity problem makes application this complicated. If necessary, temperature regime, demonstrating conditions real fire, applied. In work, actual metal a thermal power station are calculated.Goals objectives. co-authors attempt to identify bearing most dangerous development scenario. Methods Taking into account complexity space-planning solutions building, field-focused was selected. This is applicable premises, featuring complex geometric shape, where one dimension much larger than others. Non-stationary three-dimensional differential equations mass, momentum energy conservation solved for gas medium inside room (the Reynolds type Navier–Stokes equations), as well components optical density smoke. A heat equation determine distribution building structure one-dimensional case. limit moment time following start when in, at least, point reaches critical value. Results discussion Calculation results show that scenario, within 15 minutes maximum temperatures far below 500 °C. Conclusions Load-bearing an engine room, has steam turbines, don’t need protection.
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ژورنال
عنوان ژورنال: ????????????????????????
سال: 2022
ISSN: ['0869-7493', '2587-6201']
DOI: https://doi.org/10.22227/0869-7493.2021.30.06.61-72