THE DEVELOPMENT OF THE RIGID FRAME WOODEN HOUSE STRUCTURE JOINTED WITH GLUED-IN HARDWOOD DOWELS: MOMENT-RESISTING TEST ON JOINT AND ANALYSIS OF THE RIGID FRAME

摘要

In wooden structure, it is difficult to join structural members rigidly since there is no method of unifying material like welding of steel structures. The joint with glued-in hardwood dowels is the method of inserting hardwood dowels between structural members, and hardening with glue. We developed the joint combined with glued-in hardwood dowels and bolts. Dowels of 12mm in diameter made of hard maple are glued into column and beam members of sugi glulam with polyurethane adhesives to make joint specimens. The diameter of a bolt is 16mm, and the section of a column and a beam is 120×360mm. Moment-resisting tests about 3 type joint parts in a two-story portal frame using this joint were carried out. As a result of the test about the beam-column joint of 2nd story, the maximum moment was approximately 35kN·m and the rotational stiffness was approximately 5,500 kN·m/rad. The rotational stiffness of the beam-column joint of 1st story was almost equal to that of 2nd story. However, since the beam had failed, its maximum moment value was 70%. As a result of the test about the sill-column joint, the maximum moment was approximately 20kN·m and the rotational stiffness was approximately 6,500 kN·m/rad.The structural performance of a two-story portal frame was analyzed from these test results. As a result of analysis, the ultimate horizontal resistant force was estimated.