Wood Engineering Special Issue (Paper)
NUMERICAL MODELIZATION OF TIMBER CONSTRUCTION MATERIALS CONSIDERING EFFECT OF KNOTS
2021 Volume 77 Issue 5 Pages I_1-I_7
Details
2021 Volume 77 Issue 5 Pages I_1-I_7
Recently, ”reduction of CO2 emission” has been raised as a most important topic needed to be solved immediately all over the world and each country has declared its reduction target. It is known that construction industry shared the highly CO2 emissions. Thus the new sustainable materials and/or construction methods must be developed as soon as possible. In this research, it is a final target to develop a new timbersteel hybrid beam as a new sustainable material. It is expected to use timbers for the construction site to reduce CO2 emissions than the ordinal materials such as concrete and steel, so that timbers are now one of the most recognized as a sustainable material. In order to replace the concrete to timbers, the timber beam should have the same or even stronger strength than concrete. Thus, in this research timber and steel are combined to improve the beam engineering characteristics.
In this paper, as a first step to develop such a sustainable beam, knots are presented in the timber beam, because it is found that knots on the beam showed significant reduction of the strength of the beam according to experimental researches. It is shown that knots on the beam have unique material properties and linearly analyzed using FEM. The results of beams are presented in this paper.
