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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Kuznetsov I.L. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Gimranov L.R. – candidate of technical sciences, senior lecturer E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kraynov I.V. – magistrate Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleDevelopment and research of glue-laminated plywood I-beam
Abstract.This article reviews the design methods of laminated I-beam. The design approach included theoretical, experimental research and engineering simulation on software. The laminated I-beam consists of the following parts: top and bottom chord made from timber, dam made from plywood and tubular nogs that join dam with chords. The dam of the beam has prepared slots for nogs installing, and top and bottom chords have holes in their faces. Nog is a short cut of the polypropylene pipe with length about 25 mm. The seam that fixing dam and chords together also has additionally glue layer. As long as the nog and layer of glue can transfer the shear force between chords and dam beam would be as it one solid body. When the stress inside the nog reaches the critical values some sort of sleep can occur and chord and web would be carrying load separately from each other. The experiment has shown that the maximum sag of the beam was around 17 mm that relates the maximum load 40 kH. But nonlinear dependence between load and deformation occurred when the load reach 22 kH. The total deformations of the beam that calculated theoretically were significantly less than experimental (4,5 times less) simultaneously the engineering simulation has shown appropriate results with difference relatively to experiment around 38 %.
Keywords.Glue laminated, I-beam, nogs, timber chords, plywood dam.
For citations:Kuznetsov I.L., Gimranov L.R., Kraynov I.V. Development and research of glue-laminated plywood I-beam // Izvestiya KGASU. 2013. №2(24) P.108-112.


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