000K  utf8
1100  2017$c2017-03-31
1500  eng
2050  urn:nbn:de:gbv:wim2-20170331-30929
2051  10.1016/j.firesaf.2016.12.003
3000  Achenbach, Marcus
3010  Lahmer, Tom
3010  Morgenthal, Guido
4000  Identification of the thermal properties of concrete for the temperature calculation of concrete slabs and columns subjected to a standard fire—Methodology and proposal for simplified formulations  [Achenbach, Marcus]
4209  The fire resistance of concrete members is controlled by the temperature distribution of the considered cross section. The thermal analysis can be performed with the advanced temperature dependent physical properties provided by 5EN6 1992-1-2. But the recalculation of laboratory tests on columns from 5TU6 Braunschweig shows, that there are deviations between the calculated and measured temperatures. Therefore it can be assumed, that the mathematical formulation of these thermal properties could be improved. A sensitivity analysis is performed to identify the governing parameters of the temperature calculation and a nonlinear optimization method is used to enhance the formulation of the thermal properties. The proposed simplified properties are partly validated by the recalculation of measured temperatures of concrete columns. These first results show, that the scatter of the differences from the calculated to the measured temperatures can be reduced by the proposed simple model for the thermal analysis of concrete.
4950  https://doi.org/10.1016/j.firesaf.2016.12.003$xR$3Volltext$534
4950  https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20170331-30929$xR$3Volltext$534
4961  https://www.db-thueringen.de/receive/dbt_mods_00037320
5051  620
5550  Sensitivitätsanalyse
5550  Thermodynamische Eigenschaft