サブマージアーク溶接金属の靱性と先組みビルトH梁の塑性変形能力 先組みビルトH梁を用いた鋼構造梁端接合部の力学性能その2

摘要

In this paper, focusing on the toughness of the submerged arc weld (SAW) metal in pre-built-up H-shaped beams, the structural characteristics of the beam-end connection were investigated by the loading test. From test results, in case that υE_0 of SAW metal is 15J, the plastic deformation capacity of the beam-end connection was about 40% of the required performance. On the other hand, in cases that υE_0 is 48J and 59J, the required performance was satisfied. According to the welding construction test carried out before the loading test, the toughness of both the fillet weld metal by one-pass in the built-up H-shaped beam and the weld metal by multi-layer and multi-pass conforming to JIS was largely dependent on the basicity of the flux. The toughness of the fillet weld metal was lower than that of the JIS weld metal.