In this study, the flexural member experiment was conducted by a sleep section type of storied tower furniture warped by a structural cause in a traditional wood building. Then, the characteristics of flexural behavior and reinforcement effect were identified.
1) As the result of the flexural member experiment, there was the flexural crack in the lower end of the non-reinforced specimen from the early stage of forced load, so that it was destroyed. But, the specimen reinforced with a carbon fiber rod was condensedly destroyed as the top part of the experiment is condensed by the reinforcement effect or was destroyed by ruptured reinforcement. Therefore, it is considered that the reinforcement effect is shown after the early load after the reinforcement.
2) Compared to the basic specimen, reinforced specimen had the high intensity in a yield strength and the maximum strength.
3) Compared to the basic specimen, the reinforced specimen showed the bending resistance as the initial stress and bending's slope was increased. Therefore, it is considered that the specimen reinforced with the carbon fiber rob can expect the effect of deflection control.
4) Wood's bending member was the obstructive factor of bending strength by the position of the wood knot and the heart wood's cross section in terms of the characteristics of the natural wood. Therefore, when the wood's member is selected, the heart wood's cross section and the wood knot's position must be considered.
5) Compared to the basic specimen, the reinforced specimen's ductility factor was increased by average 1.52 times in Type I and by average 2.34 times in Type II. There was the clear difference by carbon fiber rob and member's cross section. Therefore, it is considered that the structural ductile behavior can be expected as the ductile behavior of the specimen enforced by carbon rod is increased.
6) Compared to the basic specimen, the reinforced specimen's plastic region stiffness was reduced by average 0.44 times in Type I and by average 0.51 times in Type II. Therefore, it is considered that the increase of stiffness tends to be relatively small compared to the increment of deflection after the yield strength.
After considering the above results of the sleep flexural member experiment, the yield strength, maximum strength and ductility factor of the specimen reinforced by a carbon fiber rod are increased compared to the basic specimen. Therefore, it is considered that there is the possibility of applying the new material method to the traditional wood structure according to the structural characteristics because the bending reinforcement effect is clear.