Dziurka Dorota, Derkowski Adam, Wieruszewski Marek, Kuliński Marcin, Mirski Radosław
Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland.
Materials (Basel). 2022 Jun 2;15(11):3976. doi: 10.3390/ma15113976.
Glulam beams are increasingly used in the construction industry because of their high strength and the possibility of using round timber with smaller cross-sections. The load-bearing capacity of beams is strongly related to the quality of the outer layers and, in the case of wood, especially the tension zones. For these reasons, this study decided to replace the outer lamella with tensile plywood. The produced beams were subjected to static bending strength and modulus of elasticity evaluation. It was shown that the best static bending strength values were obtained for beams containing plywood in the tension layer. However, the change in structure in the tension zone of beams made of glued laminated timber results not only in an increase in the load capacity of elements produced in this way but also in a decrease in the range/range of the obtained results of bending strength. This way of modifying the construction of glued laminated beams allows a more rational use of available pine timber.
胶合木梁因其高强度以及能够使用较小横截面的圆木而在建筑行业中越来越多地被使用。梁的承载能力与外层质量密切相关，对于木材而言，尤其与受拉区相关。基于这些原因，本研究决定用抗拉胶合板替换外层薄板。对制作出的梁进行了静态抗弯强度和弹性模量评估。结果表明，在受拉层含有胶合板的梁获得了最佳的静态抗弯强度值。然而，胶合木梁受拉区结构的改变不仅导致以此方式制作的构件承载能力增加，还导致抗弯强度所得结果的范围减小。这种修改胶合木梁结构的方式能够更合理地利用现有的松木。
