Design of thin-walled steel column with partially closed cross-section
2006 (English)In: Proceedings of SDSS 2006: International Colloquium on Stability and Ductility of Steel Structures : [Lisbon, Instituto Superior Técnico, 06 - 08 September 2006] / [ed] Dinar Camotim, Lisboa: Instituto Superior Técnico , 2006, 639-647 p.Conference paper (Refereed)
Cold formed sections can be optimized for different purposes and they are fairly inexpensive to produce in small series. They have an inherent weakness in their small torsional stiffness, which is unfavourable for columns. The solution presented here is to make closed section by adding a thin cover plate connected with self-tapping screws. It is here called a partially closed cross-section because it is not continuously and rigidly connected. The aim of this paper is to evaluate the efficiency of this solution by comparing the behaviour of partially closed and open cross-section. Four columns were tested within the project, two of them with centric axial load and two with eccentricities. Numerical analysis was performed using ABAQUS for establishing the influence of the cover plate on the critical load and the resistance. A good agreement between non-linear FEM and experiments were found. After this verification of the FE model a parametric study was carried out. Results of experiments and numerical analysis were compared with the predicted resistance by Eurocode 3, Part 1-3, and the Direct Strength Method.
Place, publisher, year, edition, pages
Lisboa: Instituto Superior Técnico , 2006. 639-647 p.
Research subject Steel Structures
IdentifiersURN: urn:nbn:se:ltu:diva-34434Local ID: 8a197900-9773-11db-8975-000ea68e967bISBN: 972-846961-6 (PDF)OAI: oai:DiVA.org:ltu-34434DiVA: diva2:1007685
International Colloquium on Stability and Ductility of Steel Structures : 06/09/2006 - 08/09/2006
Godkänd; 2006; Bibliografisk uppgift: CD-ROM; 20061229 (ysko)2016-09-302016-09-30Bibliographically approved