Bending resistance of partially encased beams at high temperatures: three dimensional numerical simulation

Piloto, P.A.G.; Almeida, David; Ramos Gavilán, Ana Belén; Mesquita, L.M.R.

Publication

Bending resistance of partially encased beams at high temperatures: three dimensional numerical simulation

2015Conference object

dc.contributor.author	Piloto, P.A.G.
dc.contributor.author	Almeida, David
dc.contributor.author	Ramos Gavilán, Ana Belén
dc.contributor.author	Mesquita, L.M.R.
dc.date.accessioned	2018-04-06T09:13:50Z
dc.date.available	2018-04-06T09:13:50Z
dc.date.issued	2015
dc.description.abstract	Partially Encased Beams (PEB) are composite steel and concrete elements in which the web of the steel section is encased by reinforced concrete. The experimental investigation was already developed under fire and under elevated temperatures by Paulo Piloto et al. The bending resistance of partially encased beams submitted to three bending point loading condition, at four temperature levels (20, 200, 400 and 600 ºC) is determined, based on the three dimensional finite element model (steel profile, reinforcement, stirrups and concrete). An incremental and iterative (arc length) solution method is defined to solve a geometric and material non-linear analysis (ANSYS), using a reduced integration method. The model considers perfect contact between steel and concrete. The material model assumes plasticity. The initial imperfection mode is based on the elastic stability solution (ANSYS). Two types of stirrups were considered: welded to the web (PEBA) and welded to the flanges (PEBB), three different lengths (2.5, 4.0 and 5.5 m) and three types of cross section dimensions were simulated, based on the dimensions of different classes of steel profiles (IPE100, IPE200 and IPE300). A total of 72 models were simulated, showing conservative results with respect to the simple calculation method of EN1994-1-2. The bending resistance of the numerical results was determined for multiple force events, The proportional limit force (Fp) with respect to the vertical displacement, the force (Fy) resulting from the intersection method between two straight lines drawn from linear and non-linear interaction of the vertical displacement; the load event for the vertical displacement limit of L/30 (FL/30); and the maximum load level for the asymptotic behaviour of lateral displacement (Fu). Results are in accordance to the new formula presented by Vila Real et al. and adapted to composite section.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Piloto, P.A.G.; Almeida, David; Ramos, A.; Mesquita, L.M.R (2015). Bending resistance of partially encased beams at high temperatures: three dimensional numerical simulation. In 3rd Ibero-Latin-American Congress on Fire Safety (CILASCI). Porto Alegre; Brasil	pt_PT
dc.identifier.uri	http://hdl.handle.net/10198/16716
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Elevated temperatures	pt_PT
dc.subject	Partially encased beams	pt_PT
dc.subject	Composite steel and concrete	pt_PT
dc.subject	Numerical simulation	pt_PT
dc.title	Bending resistance of partially encased beams at high temperatures: three dimensional numerical simulation	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Porto Alegre; Brasil	pt_PT
oaire.citation.title	3rd Ibero-Latin-American Congress on Fire Safety (CILASCI)	pt_PT
person.familyName	Piloto
person.familyName	Mesquita
person.givenName	Paulo A.G.
person.givenName	Luís M.R.
person.identifier	1339117
person.identifier.ciencia-id	0519-449D-6F13
person.identifier.ciencia-id	401E-2FEC-8303
person.identifier.orcid	0000-0003-2834-0501
person.identifier.orcid	0000-0002-2385-4282
person.identifier.rid	B-4866-2008
person.identifier.rid	F-2269-2010
person.identifier.scopus-author-id	6506406159
person.identifier.scopus-author-id	8585923500
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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