Metal joint, damping structure, and architectural construction

1. A metal joint, configured to connect a first subject member and a second subject member, wherein the first subject member and the second subject member are relatively displaceable in a direction of a relative displacement, the first subject member includes a first attachment plane which is parallel to the direction of the relative displacement, and the second subject member includes a second attachment plane which is opposite to the first attachment plane, the metal joint comprising:

a steel sheet which is arranged between the first attachment plane and the second attachment plane, and is folded to contact to the first attachment plane and the second attachment plane alternately while reciprocating more than one time between the first attachment plane and the second attachment plane along a direction which is orthogonal to the direction of the relative displacement and is parallel to the first attachment plane; wherein the steel sheet includes:

more than one rectangular first attachment portions which are attached to the first attachment plane in a manner that its surface contacts the first attachment plane;

more than one rectangular second attachment portions which are attached to the second attachment plane in a manner that its surface contacts the second attachment plane; and

more than one rectangular plate portions which connect the first attachment portion to the adjacent second attachment portion, wherein the plate portion is connected in a right angle to the first attachment portion and the second attachment portion, and

wherein an attachment direction of each of the first attachment portions with respect to the first attachment plane and an attachment direction of each of the second attachment portions with respect to the second attachment plane are set so that surfaces of the plate portions follow the direction of the relative displacement.

2. The metal joint according to claim 1 , wherein the plate portions have a total yield stress smaller than that of any of the first subject member and the second subject member.

3. The metal joint according to claim 1 , wherein each of the plate portions comprises a penetration hole in a direction of the plate thickness.

4. The metal joint according to claim 3 , wherein a plurality of the holes is formed in the direction of the relative displacement, and wherein a region is provided between the adjacent holes with the minimal width in the direction of the relative displacement.

5. A damping structure comprising:

a first subject member and a second subject member forming a part of an architectural construction, wherein the first subject member and the second subject member are relatively displaceable in one direction; and

a metal joint, according to any one of claims 1 to 4 , connecting the first subject member and the second subject member.

6. The damping structure according to claim 5 , wherein one of the first subject member and the second subject member is an H-section steel, the other of the first subject member and the second subject member is a steel pipe or a light channel steel, each of the first attachment portions is attached to a web member of the H-section steel, and each of the second attachment portions is attached to the steel pipe or the light channel steel.

7. The damping structure according to claim 6 , wherein a lower end of the steel pipe or the light channel steel is fixed to a ground, and the H-section steel is a pillar.

8. An architectural construction comprising the damping structure according to claim 5 .

9. The architectural construction according to claim 8 , wherein the architectural construction is a lightweight structure.