Abstract
In this study, control samples of pine (Pinus slyvestris L.), beech (Fagus orientalis L.) and oak (Quercus petreae L.) species were obtained by using fi ber reinforced finger corner joints. Teknobont 200 epoxy and polyvinyl (PVAc) adhesives were used as glue. Bearing in mind the critical loads that may affect their use, experimental samples were tested under diagonal loads. Experimental samples were also analyzed by a computer program using the finite element method (FEM). Finally, experimental data were compared with the results of FEM. The comparisons clearly showed that experimental results and finite element solutions (SAP2000 V17) including semi-rigid connections are in good agreement. As a structural analysis program in furniture engineering designs, FEM can be preferred in terms of reliability and cost.
Highlights
When combined with epoxy glue, the diagonal tension loading of oak species increases by about 8 % in CTPs
With respect to the control samples, the diagonal shrinkage value of yellow pine species combined with polivinilacetatno ljepilo (PVAc) glue decreases by approximately 9 %
When the connection with epoxy glue is provided, the maximum fracture load in diagonal tension loading of yellow pine species shows a decrease of about 32 % in CTPs
Summary
In today’s wooden structure design, the use of solid wood material, as one-piece in large-sized elements, is not feasible - both economically and technically. The use of single piece solid wood is limited in the production of load bearing elements. Complete removal of defects is not possible This situation greatly affects the safety of the wooden structure. The use of solid single piece wood in the production of load bearing elements increases the rate of waste making it economically not viable. For this reason, in the design of wooden structures, it is possible to obtain the structural elements by joining the wood in the desired dimensions. In order to eliminate this negative effect, studies on strengthening the joint regions should be carried out (Akgül, 2007)
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