Keynote lecture: ROBUSTNESS OF STEEL FRAMED STRUCTURES IN FIRE

Ian W. Burgess

Abstract


Progressive collapse of a structure occurs when an initial local failure causes a sequence of failures in other elements, eventually resulting in collapse of a disproportionately large part of the structure, or even the entire building. It has been an important structural issue in the UK since the collapse of a large part of the Ronan Point apartment building in London in 1968 (The Institution of Structural
Engineers 1969). The collapse of the World Trade Center towers (Shyam Sunder et al. 2005) has attracted attention to the robustness of steel structures in fire, within which the need to evaluate the performance of the steel connections at elevated temperature has become a key topic.

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