Design of beam-to-column joints under seismic-induced fire
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Design of beam-to-column joints under seismic-induced fire
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Design of beam-to-column joints under seismic-induced fire

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In this paper, a multi-objective advanced design methodology is proposed for steel-concrete
composite moment-resisting frames. The research activity mainly focused on the design of
beam-to-column joints under seismic-induced fire loading together with the definition of
adequate structural details for composite columns. Thermal analyses of cross sections were
performed in order to obtain internal temperature distribution; structural analyses were then
carried out on the whole frame to assess the global behavior under the combined action of
static and fire loadings. Furthermore, results of numerical analyses were used in order to derive
information about the mechanical and numerical behavior of joints. In this paper the
experimental program carried out on four beam-to-column joint specimens under seismic
loading is described and results are presented and discussed together with the outcomes of
numerical simulations owing to seismic and fire actions. Experimental tests demonstrated the
adequacy of the seismic design. Numerical simulations showed a satisfactory performance of
joints under seismic-induced fire loading.



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