JOINT STRUCTURE OF COLUMN AND BEAM AND CONSTRUCTION METHOD OF JOINT STRUCTURE BETWEEN COLUMN AND BEAM: Fid-Bau Portal

JOINT STRUCTURE OF COLUMN AND BEAM AND CONSTRUCTION METHOD OF JOINT STRUCTURE BETWEEN COLUMN AND BEAM

SAGAWA TAKAYUKI / NISHITANI TAKAYUKI

To provide a joint structure between a column and a beam having good workability while ensuring the shear transmission performance and the axial force transmission performance of the column in the event of a fire.SOLUTION: There is provided a joint structure 100 of a column and a beam. An upper joint reinforcing bar 42A has an upper vertical portion 43A and an upper inclined portion 44. An lower joint reinforcing bar 42B has a lower vertical portion 43B and a lower inclined portion 45. A lower end portion 44b of the upper inclined portion 44 is arranged below an upper end portion 45u of the lower inclined portion 45. When viewed from the vertical direction, the plurality of upper vertical portions 43A and the plurality of lower vertical portions 43B are dispersedly arranged in a plurality of vertical portion arrangement regions. The lower end 44b of the upper inclined portion 44 is arranged in a first aggregation region between the adjacent vertical portion arrangement regions. The upper end portion 45u of the lower inclined portion 45 is arranged in a second aggregation region different from the first aggregation region between adjacent vertical portion arrangement regions.SELECTED DRAWING: Figure 1

【課題】火災時の柱のせん断伝達性能及び軸力伝達性能を確保しつつ、施工性が良い柱と梁との接合構造を提供する。【解決手段】柱と梁との接合構造１００では、上側接合鉄筋４２Ａは、上側鉛直部４３Ａと、上側傾斜部４４と、を有し、下側接合鉄筋４２Ｂは、下側鉛直部４３Ｂと、下側傾斜部４５と、を有し、上側傾斜部４４の下端部４４ｂは、下側傾斜部４５の上端部４５ｕよりも下方に配置され、鉛直方向から見て、複数の上側鉛直部４３Ａ及び複数の下側鉛直部４３Ｂは複数の鉛直部配置領域に分散して配置され、上側傾斜部４４の下端部４４ｂは隣り合う鉛直部配置領域の間の第一集約領域に配置され、下側傾斜部４５の上端部４５ｕは隣り合う鉛直部配置領域の間の第一集約領域とは異なる第二集約領域に配置されていることを特徴とする。【選択図】図１

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