Fire resistance; hollow steel section; column; Composite steel-concrete
Abstract :
[en] Hollow steel columns filled with bar-reinforced concrete are used extensively in the construction of
high-rise buildings. Many research works devoted to the fire resistance of these profiles have been
performed in Europe and in North America. Though calculation methods are now proposed in codes,
more practical tools are needed by the design engineers. It is not easy to develop such methods due to
the large scatter of experimental results. In this article three methods based on quite different
procedures are examined. Comparisons have been made between the results obtained by the three
methods and test results. The potentialities of each method are examined, but also the domains in
which they should be used with care, or even they should not be used.
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