高強度鋼用の複半月充填ボルト接合に関する基礎的研究その5 支圧による降伏耐力評価式

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The authors have presented the half-moon shaped bearing bolt joint for the weld-free built-up member made of H-SA700 high-strength steel. It is desired that the design formula for new fastener using the bearing bolt is established to build the innovative structures made of H-SA700 high-strength steel. In this paper, we focused the yield strength evaluation expression of the joint. To judge the yield strength of the joint, precise load vs deformation relation is required. Hence non-linear properties due to large plastic deformation caused by bearing must be solved. The Non-linear finite element analyses were performed on bearing joints with various bolt hole size, grade of steel and end distance of plate. Influence of bolt hole size, grade of steel and end distance of plate on yield strength of the joint was clarified.