Abstract
The chapter discusses the finite element analysis of concrete filled steel columns in fire. Concrete filled steel columns are widely used all over the world due to their advantages in construction speed and high fire resistance. The chapter presents the results of a finite element study to simulate the fire performance of concrete filled steel columns exposed to a standard fire condition. The current structural fire resistant design standards, such as EC 4 Part 1.2 and BS 5950 Part 8 provides simplified and approximate methods to calculate fire resistance of these members, but their range of application is limited and there is still a lot of uncertainty over their accuracy. The finite element analysis offers the possibility of accurately simulating the behavior of this type of columns, including nonuniform temperature distributions and geometric and material non-linearity in fire.
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