JUNCTION STRUCTURE AND STRUCTURE BODY

To achieve a highly rigid and highly strong structure body while reducing amount of wood.SOLUTION: A junction structure comprises: a first member 10 having a pair of first junctions on lateral faces on both sides in a width direction; a second member 20 having a second junction connected to one first junction; and a third member 30 having a third junction connected to the other first junction. The first junction has a first convex part 11 having a first recess and a first concave part. The second junction has a second convex part 31 fitting to the first concave part and having a second recess and a second concave part fitting to the first convex part 11. The third junction has a third convex part fitting to the first concave part and having a third recess and a third concave part fitting to the first convex part 11. The junction structure has a first engaging member to be disposed in a first hole formed of the first recess and the second recess and a second engaging member to be disposed in a second hole formed of the first recess and the third recess. The second member and the third member are connected respectively at an angle with the first member.SELECTED DRAWING: Figure 1 【課題】木材量の低減を図りつつ、高剛性・高強度の構造体を実現する。【解決手段】幅方向の両側の側面に一対の第１接合部を有する第１部材１０と一方の第１接合部に接合される第２接合部を有する第２部材２０と他方の第１接合部に接合される第３接合部を有する第３部材３０とを備え、第１接合部は第１窪み部を備える第１凸部１１と第１凹部とを有し、第２接合部は第１凹部と篏合し第２窪み部を備える第２凸部３１と第１凸部１１と篏合する第２凹部とを有し、第３接合部は第１凹部と篏合し第３窪み部を備える第３凸部と第１凸部１１と篏合する第３凹部とを有し、第１窪み部と第２窪み部とによって形成される第１孔に配置される第１係合部材と第１窪み部と第３窪み部とによって形成される第２孔に配置される第２係合部材とを備え、第２部材及び第３部材が、それぞれ、第１部材に対して、角度を持って接合されている。【選択図】図１