FIREPROOF STRUCTURE OF COLUMN-BEAM JOINT PART

To provide a fireproof structure of a column-beam joint part capable of securing fireproof performance equivalent to a column beam.SOLUTION: A fireproof structure 100 of a column-beam joint part is formed by joining a fireproof wooden column 12 and a fireproof wooden beam 14 via a joint metal 16 having a T-shaped cross section which comprises a gusset plate 50 fixed to a plate 36 protruding toward the fireproof wooden column 12 from a side end part of a core material 26 of the fireproof wooden beam 14 and a base plate 52 mounted on a side surface of a core material 20 of the fireproof wooden column 12. The fireproof structure of the column-beam joint part includes a cement-based solidification material 18 filled in a region around the joint metal 16 between the side end part of the fireproof wooden beam 14 and the side surface of the fire proof wooden column 12. Outside the cement-based solidification material 18, a fireproof covering material or a wooden covering material may be provided. The fireproof covering material may be provided at a beam header surface.SELECTED DRAWING: Figure 1 【課題】柱梁と同等の耐火性能を確保することができる柱梁接合部の耐火構造を提供する。【解決手段】耐火木質柱１２と、耐火木質梁１４とを、前記耐火木質梁１４の前記芯材２６の側端部から前記耐火木質柱１２に向けて突出するプレート３６に固定されるガセットプレート５０と、前記耐火木質柱１２の前記芯材２０の側面に取り付けられるベースプレート５２とからなるＴ字状断面の接合金物１６を介して接合してなる柱梁接合部の耐火構造１００であって、前記耐火木質梁１４の側端部と、前記耐火木質柱１２の側面の間の前記接合金物１６の周囲の領域に充填されたセメント系固化材１８を備えるようにする。セメント系固化材１８の外側に耐火被覆材または木質被覆材を設けてもよい。梁小口面に耐火被覆材を設けてもよい。【選択図】図１