STUDIES ON BEHAVIOR OF PRECAST CONCRETE MEMBERS JOINTUSING CONNECTING BARS UNDER INCLINED ARRANGEMENT

摘要

On the seismic design of the joint of precast concrete structure, design method based on the conceptabout maximum shear strength of the joint has been used. But establishment of the seismic design methodbased on the concept about ductility of the precast joint is required recently.On this study, for example of the ductile precast joint between shear wall and beam, the authorsthought the joint which had connecting bars under inclined arrangement. And the authors purposed tomake clear the shear characteristics of that ductile precast joint.To attain that purpose, the authors performed shear experiments and analytical calculations about theductile joint.From shear loading test and finite element analysis, the authors were obtained the following results,1) The joint which had 30 degree of the inclined connecting bars arrangement had well characteristicsabout maximum shear force and about ductility.2) The shear resistant mechanism of the inclined connecting joint bar was constituted by its axial stress.3) The shear strength of the joint which had inclined connecting bar could be measured by the formula ledby the past studies about precast joint with partly amendment.