木材の材料強度を考慮したGIR継手接合部の耐力算定法の提案

概要

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The Glued-in Rod (GIR) connection system has some advantages such as easy connection work, beautiful construction. Usually the GIR connection system is adapted for the large scale glulam structures and timber truss system and so on. Many kinds of design manual are used for each GIR connection system. And in most cases, it is necessary that the strength properties of the GJR joint are evaluated by the experiment. Therefore, the establishment of the comprehensive structural design method of the joint is required. In this paper, the pull-out tests of single rod to evaluate the influence of species of the glulam and edge distance of metal rod on the strength property of joint were carried out. And the failure mode of each edge distance was investigated to propose the calculating method. Then it was found that the failure mode has three types, such as the tensile failure mode from the tensile strength of the parallel to the grain, the split failure mode from the tensile strength of the perpendicular to the train, and the shear failure mode from the shear strength of the glued area around the rod. Therefore, the basic wooden material strength performance was researched using same materials of the single pull-out test specimens. As a result, the proposed calculation method for this GIR joint system showed the acceptable results.
一般社団法人日本建築学会の論文
2010-03-27