Beam joint structure and method for calculating rotational rigidity of beam joint structure

摘要

Provided is a beam joint structure in which even if an end of a beam is negatively bent, the end of the beam is prevented from being damaged. A support member provided with a shear plate; a beam having a web and a flange, and arranged to extend from the shear plate; and an end of the web of the beam and the shear plate. In a beam joining structure 2 including a bolt 41 for friction joining; and a transmitting member 51 provided on a flange of the beam and transmitting a bending moment acting on the beam to a supporting member, bending generated at an end of the beam in the axial direction of the beam. When the beam joint structure in which the absolute value of the moment is equal to the absolute value of the bending moment generated in the center of the beam in the axial direction of the beam is defined as the first reference structure, the rotational rigidity of the beam end of the beam joint structure is The rotational rigidity of the end of the beam of the first reference structure is equal to or less than the rotational rigidity upper limit value. [Selection diagram] FIG.