Behaviour of cold-formed steel screwed connections at ambient and elevated temperatures

Dias, Rui Paulo Silva; Parente, Armandino; Mesquita, L.M.R.; Piloto, P.A.G.

Publication

Behaviour of cold-formed steel screwed connections at ambient and elevated temperatures

2016Conference object

dc.contributor.author	Dias, Rui Paulo Silva
dc.contributor.author	Parente, Armandino
dc.contributor.author	Mesquita, L.M.R.
dc.contributor.author	Piloto, P.A.G.
dc.date.accessioned	2018-03-26T10:59:28Z
dc.date.available	2018-03-26T10:59:28Z
dc.date.issued	2016
dc.description.abstract	The application of cold-formed steel structural members in steel construction, and in particular building construction, has a number of advantages that includes its high structural efficiency compared to the member weight. These sections are usually obtained by thin cold-formed sheets and have slender cross-sections. In recent years the increasing safety requirements reflected in the different design standards, boosted the behaviour of materials under extreme conditions, in particular in conditions of high temperatures such as those arising from fires. The design of cold-formed sections and their connection elements must be performed at room temperature and also in an accidental fire situation, for which the connection strength design value must be determined at elevated temperatures. This work presents a study of the behaviour of cold-formed thin steel sheeting screwed connections at room temperature and elevated temperatures. The shear and bearing failure modes are analysed experimentally by means of a parametric analysis, considering: (i) different elevated temperature values; (ii) cold-formed steel grades; (iii) board effect of the screw position; (iv) and different steel sheet thicknesses. The set of experimental results are used for calibration and verification of the numerical model developed by the finite element method in the software Ansys. The experimental tests presented allowed to determine the load resistance of self-drilling screwed connections of thin steel sheets and the influence of the sheet thickness, edge distance (e1) and the connection temperature. The results show that for the same connection, keeping the sheet thickness and edge distance e1, a change on the failure mode with the temperature increase occur. The finite element numerical model presented allow to study the behaviour of self-drilling screwed connections and determine the collapse load. The cases analysed give results close to the characteristic resistance of the screws manufacturer.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Dias, Rui; Parente, Armandino; Mesquita, L.M.R.; Piloto, P.A.G. (2016). Behaviour of cold-formed steel screwed connections at ambient and elevated temperatures. In Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal	pt_PT
dc.identifier.issn	978-989-20-6676-9
dc.identifier.uri	http://hdl.handle.net/10198/16546
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.title	Behaviour of cold-formed steel screwed connections at ambient and elevated temperatures	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal	pt_PT
oaire.citation.title	7th International Conference on Safety And Durability of Structures - ICOSADOS 2016	pt_PT
person.familyName	Mesquita
person.familyName	Piloto
person.givenName	Luís M.R.
person.givenName	Paulo A.G.
person.identifier	1339117
person.identifier.ciencia-id	401E-2FEC-8303
person.identifier.ciencia-id	0519-449D-6F13
person.identifier.orcid	0000-0002-2385-4282
person.identifier.orcid	0000-0003-2834-0501
person.identifier.rid	F-2269-2010
person.identifier.rid	B-4866-2008
person.identifier.scopus-author-id	8585923500
person.identifier.scopus-author-id	6506406159
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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