Eurocode structural fire design and its application for composite circular hollow section columns

the tabular structural fire design method for centrally loaded composite columns consisting of concrete filled steel circular hollow sections proposed in en 1994-1-2:2005 (eurocode 4: design of composite steel and concrete structures - structural fire design) is described here. a design procedure is then discussed, based on the determination of the temperature distribution in the cross sectional area and along the column length. a finite element based computer program is developed to implement the three-dimensional thermal analysis of different materials and geometries for given time versus temperature fire data. an example problem is shown, comparing the tabular method proposed in en 1994-1-2:2005 and the method presented in this work.