Cold-formed steel beams as an alternative option to support steel grating floor panels in industrial buildings
No Thumbnail Available
URL
Journal Title
Journal ISSN
Volume Title
Insinööritieteiden korkeakoulu |
Master's thesis
Authors
Date
2023-12-11
Department
Major/Subject
Mcode
Degree programme
Master's Programme in Building Technology (CIV)
Language
en
Pages
64+4
Series
Abstract
The work studies the possibility to utilize cold-formed thin-walled steel beams as the supporting beams for the grating floor in industrial building. The expected benefits of the cold-formed profiles are formulated. The current design procedures for the cold-formed members are researched. The possibility of their application to the bars supporting the floor panels is addressed. The key aspects that differentiate the grating supports from the traditional application of cold-formed purlins are researched and explained. The new design method that accounts for those aspects is proposed and its integration into the current design procedure is described. The design method is based on the Principle of Minimum Potential Energy in structural mechanics. The comparison between the exact computer-aided analysis and the new method is presented. The factors affecting optimal cross section shape are addressed. Typical industrial building conditions are studied for the possible benefits of the usage of the cold-formed profiles. Cold-formed beams demonstrated sufficient material savings for relatively small spans under the typical conditions used in industrial buildings. Depending on the type of cross section, the material savings declined or disappeared when the beam span approached 3m.Description
Supervisor
Niiranen, JarkkoThesis advisor
Khakalo, SergeiNiinimäki, Tero
Keywords
cold-formed, purlins, structural steel design, energy method, distortional buckling, lateral-torsional buckling