Chungnam National University
Countries around the world are trying various approaches to using eco-friendly building materials in order to reduce carbon emissions. Among eco-friendly building materials, wood is a sustainable resource that is returned to the ecosystem when discarded, and is particularly a material that absorbs carbon dioxide. Therefore, studies on wooden buildings are continuously being conducted, and the relevant standards for revitalization of wooden buildings are being revised to gradually expand the scope of restrictions such as the height and size of buildings. In many countries around the world, engineering timbers for high-rise wooden buildings such as structural laminated timber (GLT), structural cross-laminated timber (CLT), and laminated veneer lumber (LVL) are being developed. In order to connect these engineering woods, glued-in rod joints with high rigidity and smooth power transmission are mainly used. In this study, a finite element analysis study was conducted by introducing additional variable elements based on previously conducted experimental studies with the embedding direction of rebar (grain direction of wood), embedding depth, and type of adhesive as variables. The variables were set as the embedding depth of the rebar embedded in the wood, the diameter and length of the rebar, and the amount of adhesive. As for the adhesive between wood and reinforcing bars, putty-type adhesive has low workability, so the physical properties of liquid-type adhesive were applied. For wood, the physical properties of larch structural laminate were applied, and seven units of 30x500x200 were laminated to make a part of 210x500x200. SD400 reinforcing bars were used, the diameter variables were set at D10 to D22, and 300mm long reinforcing bars were embedded according to the parameters. The reinforcing bar embedding depth was set to 100~300mm, and the hole was drilled 10mm more than the length of the rebar embedding. The diameter of the reinforcing bar and the space of the hole diameter were determined by the amount of adhesive, so the finite element analysis was conducted by dividing the adhesive volume into two cases of 3 mm and 5 mm. As a result of the study, in the study conducted under the same conditions as the experiment, the experimental results showed similar pulling performance, and the reliability of the experimental results was secured.
Abstract
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Poster
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