| abstract |
(57) [abstract] (with correction) [PROBLEM] To have a practical joint strength in a joint or a joint structure, not to damage a joint due to a difference in thermal expansion, to be lightweight and easily cut with a saw or the like. It is possible to reduce the amount of carbon dioxide that contributes to global warming by using plant-based materials, reduce carbon dioxide in the air, and fix carbon dioxide. Provided are a joining tool which can be mass-produced at a low cost, a joining structure between structural members, and a joining method between joining members. SOLUTION: The cross section is substantially circular, substantially elliptical, or substantially polygonal, and wood such as cedar, bamboo such as magaki, glued laminated material, laminated material, or paper material, or a straight line or a combination thereof. A rod-shaped member 2 formed into a bent shape or the like; A hollow portion 4 formed in the longitudinal direction in the axial direction of the rod-shaped member and opened at both ends 3 or one end 3 of the rod-shaped member 2. |