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On the issue of the joints strength for wooden glued structures

Abstract

On the issue of the joints strength for wooden glued structures

Linkov V.I.

Incoming article date: 04.02.2020

The results of testing a series of 18 samples of joints for chipping along wood fibers are considered. The samples are made of glued wooden beam, intended for use as a supporting structure of the floor. To assess the strength of the adhesive joint in accordance with standard 33120-2014 “Wooden glued structures. Methods for determining the strength of joints”, statistical processing of test results was carried out, temporary shear resistance, coefficient of variation, range of variation series and the minimum probabilistic value of tensile strength were determined. Indicators are given to standard wood moisture content W = 12%. It was determined that the strength of the adhesive joint is less than the value established by current standards, by 18.5%.

Keywords: glued wood, wooden glued beams, adhesive strength, temporary chipping resistance, tensile strength, minimum probabilistic value of tensile strength, coefficient of variation, chipping during bending, standard wood wetness