Peculiarities of calculation of wooden beams for oblique bending using the deformation model
Andrii Pavluk, Svyatoslav Gomon, M. M. Khoruzhyi, Sviatoslav Homon, O. Dejneka, Mariia Smal, Oksana Dziubynska
Abstract
The method of calculating wooden obliquely bent beams using the deformation model has been developed. This technique considers the distribution of stresses in the compressed and stretched zones of the calculated section of the beam, including the formation of folds in the compressed zone of pure bending. It was established that the current norms for calculating wooden structures provide a significant margin of strength compared with the calculation based on the deformation model: for the angle of inclination 10 0 - by 2.49 times, for the angle of inclination 25 0 - by 2.15 times. the maximum bending moment that the beam can absorb, determined by the deformation model at the angle of inclination 10 0 , is M=18.72 kNm, for the angle of inclination 25 0 – M=17.1 kNm, which differs by 8.2% and 3.3% from the experimental data for similar beams at the corresponding angles of inclination. An example of calculating a wooden glulam beam under oblique bending according to the newly developed method is given.