Column stability during welding

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dc.contributor.authorVild, Martincs
dc.contributor.authorBajer, Miroslavcs
dc.contributor.authorBarnat, Jancs
dc.coverage.issue2019cs
dc.coverage.volume471cs
dc.date.accessioned2019-06-20T06:10:37Z
dc.date.available2019-06-20T06:10:37Z
dc.date.issued2019-02-24cs
dc.description.abstractThis research is part of the project of strengthening of steel members under load using plates welded parallel to the member axis. Buckling load resistance of columns has to be checked during welding under compressive load. A part of a cross-section is ineffective due to high temperature near the weld. The centre of gravity is shifted and the decisive cross-section is loaded by additional bending moment. Moreover, the weld causes deformations which are higher than in case of regular welding. This paper presents authors’ method determining the buckling load resistance of the compressed member during welding. The method takes into account the column cross-section, slenderness, and effective intensity of the welding heat source. The column is treated as a stepped member and its Euler’s critical load is decreased. The deformation of the column and the stress are determined with regards to second order effects. The method is validated by experiments performed in the laboratory of Department of Metal and Timber Structures at Brno University of Technology in November 2017. Columns with cross-sections HEA 100 and SHS 100×5 with the length of 3 m were loaded by the maximal force determined using the analytical method and under this constant load the weld bead was being laid from the bottom of the column to 15 cm above the mid-height. Then, still during welding, the force was gradually increased until the column failed via flexural buckling. Measured values of load resistance, deformations and temperatures are compared with the authors’ analytical method. All six specimens resisted the maximum calculated load and failed at slightly higher loads.en
dc.formattextcs
dc.format.extent1-7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationIOP Conference Series: Materials Science and Engineering. 2019, vol. 471, issue 2019, p. 1-7.en
dc.identifier.doi10.1088/1757-899X/471/5/052019cs
dc.identifier.issn1757-8981cs
dc.identifier.other155856cs
dc.identifier.urihttp://hdl.handle.net/11012/178377
dc.language.isoencs
dc.publisherIOP Publishing Ltd.cs
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringcs
dc.relation.urihttps://iopscience.iop.org/article/10.1088/1757-899X/471/5/052019cs
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1757-8981/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/cs
dc.subjectSteelen
dc.subjectcolumnen
dc.subjectbucklingen
dc.subjectweldingen
dc.titleColumn stability during weldingen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-155856en
sync.item.dbtypeVAVen
sync.item.insts2020.04.01 11:00:33en
sync.item.modts2020.04.01 05:57:25en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Fakulta stavebnícs
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