柱梁接合部の脆性破壊に及ぼす柱軸力の影響に関する破壊力学的検討

抄録

The present paper aims to clarify effect of column axial force on possibility of brittle fracture of the beam to column welded joint quantitatively by using the local fracture criteria. In respect to steel plates consisting the joint, stress state of brittle fracture is also clarified in this paper. As the result, consequently, it is comorehended that column axial force, crack length, or position of crack initiation much influences possibility of brittle fracture of the joint. Specially, effect of column axial force is considered to be large when tensile force applies the column.