Connection structure of beam and column, and connection member
In a beam-connection member 9 , the bottom surface side is a column-connection surface 14 and one side surface is a beam-mounting surface 16 . In other words, the column-connection surface 14 and the beam-mounting surface 16 are formed to be substantially perpendicular. The column-connection surface 14 is the site of connection with a surface of the column. A depression 15 is formed on the column-connection surface 14 . The depth of the depression 15 is preferably at least half of the main body thickness of the beam-connection member 9 . Further, a notch 11 is formed across the width direction on the column-connection surface 14 . The notch 11 is to avoid interference with the diaphragm. Near the notch 11 , a rib 17 is provided in the depression 15 as necessary in the width direction. The rib 17 is for preventing deformation of the beam-connection member and for reinforcing the beam-connection member.
1. A beam-and-column connection structure, comprising:
a connection member having a column-connection surface connected to the column, a beam-mounting surface which is a surface approximately perpendicular to the column-connection surface, and a notch formed on the column-connection surface along the width direction of the body to avoid interference with a diaphragm;
a pair of diaphragms formed on the column;
a first beam of which flange parts are connected to the upper and the lower diaphragms respectively; and
a second beam that has a different height to the first beam and is connected to the column in a different direction to the first beam; wherein,
a flange part of the second beam is connected to one of the diaphragms;
the column-connection surface of the connection member is connected to the peripheral surface of the column between the other flange part of the second beam and the other diaphragm;
the thickness of the connection member at an intersection part of the extended part of the diaphragm and the connection member, in which the interference is avoided at the notch, is provided to be larger than the thickness of the column; and
stress is transmitted between the other flange part of the second beam and the other diaphragm via the connection member.
2. The beam-and-column connection structure according to claim 1 , wherein:
a depression is provided on the column-connection surface, the depth of the depression being half or more of the body thickness of the connection member; and
the thickness of the connection member at an intersection part of the extended part of the diaphragm and the connection member, in which the interference is avoided at the notch, is provided to be larger than the thickness of the column.
3. The beam-and-column connection structure according to claim 2 , wherein:
a rib is formed on the depression in its width direction.
4. The beam-and column connection structure according to claim 1 , wherein:
the lower surface of the other flange surface of the second beam is in contact with the beam-mounting surface of the connection member.
5. The beam-and-column connection structure according to claim 1 , further comprising:
a reinforcing member having a convex part protruding along the thickness direction of the edge part of the body in a direction that is perpendicular to its width direction; wherein,
the column has an approximately rectangular shaped cross-sectional outline and a curved surface part at a corner part;
at least one of the edge part of the second beam in its width direction protrudes over the curved surface part of the column;
the reinforcing member is connected to the column and the second beam with the convex part being inserted to a gap between the curved surface part and the other flange part of the second beam at the height of the other flange part of the second beam; and
stress is transmitted between the other flange part of the second beam and the column via the reinforcing member.
6. The beam-and-column connection structure according to claim 5 , wherein:
the inner surface of the convex part of the reinforcing member is a concave curved surface part which approximately corresponds to the shape of the curved surface, and the radius of curvature of the concave surface part is less than the radius of curvature of the curved surface part.
7. The beam-and-column connection structure according to claim 5 , wherein:
the width of the second beam is less than the width of the column; and
the second beam is connected to the column decentered in its width direction.
8. The beam-and-column connection structure according to claim 5 , wherein:
the length of the reinforcing member is half or less of the width of the column.