钢材的防火性能较差。 The thermal expansion for increasing temperature is very high compared to that of other building materials, and might result in effects that were not present in the design at normal temperature due to restraint in the component. As temperature increases, steel ductility increases, whereas its strength decreases. Since steel loses 50% of its strength at temperature of 600 °C, it is important to protect components against fire effects. In the case of protected steel components, the fire resistance duration can be increased due to the improved heating behavior.
该实施例已在技术文献[1]中作为实施例9.5以及在作为实施例8.5的[2]中描述。 该例题主要验算某钢结构平台主梁的弯扭屈曲稳定性。 结构构件的截面形式为等截面。 Der Stabilitätsnachweis kann daher nach Abschnitt 6.3.2 der DIN EN 1993-1-1 erfolgen. 同时由于构件仅受单向受弯荷载的作用,因此也可以按照第 6.3.4 节的规定进行验算。 Ergänzend soll die Ermittlung des Verzweigungslastfaktors am idealisierten Stabmodell im Rahmen der oben genannten Verfahren mit einem FEM-Modell validiert werden.