A multi-objective design methodology dealing with seismic-induced fire on steel-concretecomposite moment resisting frames endowed with concrete filled tubes (CFT) full strength jointsis presented in this paper. In order to achieve these goals analytical and FE simulationsincluding thermal analyses were carried out to design the proposed joints: this was followed byexperimental tests under monotonic and cyclic loadings. Preliminary, seismic and fire analysesprovided valuable information on the performance of moment resisting frames endowed with thechosen joint typology. A total of six specimens was designed and subjected to lateral loads. Thespecimens were subassemblages of interior beam-to-column joints connected by means ofwelded connections. Relevant experimental results are presented and commented.Furthermore, since the scope of the project was to promote joint typologies able to survive aseismic-induced fire, specimens were damaged by imposing monotonic loads equivalent todamage induced by seismic excitations, before being subjected to fire loadings. Thus, valuableinformation was obtained about the endurance of the proposed joint typology.
SEISMIC-INDUCED FIRE ANALYSIS OF STEEL-CONCRETE COMPOSITE BEAM-TO-COLUMN JOINTS: WELDED SOLUTIONS
PUCINOTTI, RAFFAELE
2011-01-01
Abstract
A multi-objective design methodology dealing with seismic-induced fire on steel-concretecomposite moment resisting frames endowed with concrete filled tubes (CFT) full strength jointsis presented in this paper. In order to achieve these goals analytical and FE simulationsincluding thermal analyses were carried out to design the proposed joints: this was followed byexperimental tests under monotonic and cyclic loadings. Preliminary, seismic and fire analysesprovided valuable information on the performance of moment resisting frames endowed with thechosen joint typology. A total of six specimens was designed and subjected to lateral loads. Thespecimens were subassemblages of interior beam-to-column joints connected by means ofwelded connections. Relevant experimental results are presented and commented.Furthermore, since the scope of the project was to promote joint typologies able to survive aseismic-induced fire, specimens were damaged by imposing monotonic loads equivalent todamage induced by seismic excitations, before being subjected to fire loadings. Thus, valuableinformation was obtained about the endurance of the proposed joint typology.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
