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Fire exposed light-frame timber walls: A study on the effect of geometrical reduction of a vertically loaded I-section stud
RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
2009 (Engelska)Rapport (Refereegranskat)
Abstract [en]

A wooden I-stud as a member of a light-frame timber wall is modelled with reducing flange width to simulate fire exposure. The stud is loaded with a vertical load and the effect of restraints from one gypsum board and the top and bottom rail is considered. Geometry and material values are chosen to correspond to a stud with flanges of solid wood and web of OSB (oriented strand board). A model with shell and beam elements is implemented in Abaqus. A buckling analysis is performed on a perfectly straight stud and then a geometrically nonlinear analysis is performed on a stud with an initial curvature. Both the buckling analysis and the geometrically nonlinear analysis show that even a large reduction of the flange width results only in moderate changes of the load-carrying capacity of the structure. In the report diagrams are presented from the geometrically nonlinear analysis where the critical load is easy to read once a failure stress is determined, but an estimate of the the failure stress is not given here.

Ort, förlag, år, upplaga, sidor
2009. , s. 41
Serie
Reports (School of Technology and Design, Växjö University) ; 51
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-5498Lokalt ID: 10801ISBN: 9789176366585 (tryckt)OAI: oai:DiVA.org:ri-5498DiVA, id: diva2:963323
Tillgänglig från: 2016-09-08 Skapad: 2016-09-08 Senast uppdaterad: 2020-12-01Bibliografiskt granskad

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