Stiffness decrease for steel end-plate beam-to-column joint when exposed to fire

Deformations of steel end‐plate beam‐to‐column joint when subject to simulated steady‐state and transient‐state fire heating regimes

“…7 the results obtained by the authors after simulating the impact of fire on this joint with a development scenario corresponding to the steady-state heating regime are summarised. These results were also partially reported in [3]. This juxtaposition yields the opportunity to compare the joint destruction mode changing with the temperature affecting the considered joint, and associated with reaching the ultimate limit state.…”

“…6. Those figures, obtained and reported by the authors in [5], depict the limit deformations of a joint analogous to the one considered here, but loaded only statically, without any fire action. In the Fig.…”

“…In our oppinion, the procedures of numerical assessment of joint pliability related to fire conditions, described in this paper, lead to estimates much more reliable than those which can be obtained after application of only the generalized analytical equations conforming to the component method standard. This has been shown in detail in [3], proving that both the rigidity and load bearing capacity of the joint related to the fire situation and obtained after using the conventional standard model are quantitatively underestimated. As a result, however, both these estimates remain safe for the user, as they do not overstate the actual, guaranteed level of safety, quantified in the event of a potential fire with a complex characteristic.…”