PSI - Issue 36

Svyatoslav S. Gomon et al. / Procedia Structural Integrity 36 (2022) 217–222 Gomon S. et al./ Structural Integrity Procedia 00 (2021) 000 – 000

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1. Introduction In buildings and structures, the most common load-bearing wood elements are bending elements. A large number of works are devoted to solving the problem of bending strength of a wood element, De la Rosa et al. (2013), Subramanian (2010), Betts et al. (2010), Soriano et al. (2016), Anshari et al. (2017), Gomon et al. (2017), Roshchina et al. (2017), Vahedian at al. (2019), Gomon et al. (2020), Sobczak-Piastka et al. (2020), Wdowiak-Postulak (2020), Donadon et al. (2020). This research is of particular interest from the point of view of a practicing engineer. As practice shows, the strength (bearing capacity at normal stresses at the first group of limit states) of wood beams can be increased, either by increasing the cross-section of the element, or by reinforcing materials with higher mechanical properties. Enlarge of the height of the beams is not promising, especially when installing the floor, because it increases its volume. The aim of the research is to study the behaviour of reinforced and non-reinforced glued wood beams under the action of short-term load for their behaviour on the first group of limit states and to determine the construction of the beam with the best strength characteristics. 2. Methods of experimental research Reinforced and non-reinforced glued beams were made with a length of 3000 mm and cross-sectional dimensions of 100 x 150 mm. These wooden elements were tested for transverse bending according to the scheme of the experimental unit shown in Fig. 1.

Fig. 1. The scheme of testing of beams.

A general view of the beam GRB-12B under load is shown in Fig. 2.

Fig. 2. General view of the GRB-12B beam under load.