エレクトロスラグ溶接により施工した鋼構造柱梁接合部内ダイアフラム溶接部のスリット先端部の開口挙動

概要

論文の詳細を見る
There has been a concern on fracture from weld zones between interior diaphragms and a built-up box column at a beam-column connection. The concern may become increased when high heat input welding such as electro-slag welding is employed. From this background, detailed 3D finite element analyses were conducted to study the fracture toughness requirements. The toughness demands were quantified in terms of inelastic crack tip opening displacement (CTOD). It was shown through the analyses that the CTOD was larger for weak-beam cases than for week-panel cases, and the CTOD increase in week-beam cases was associated with outside-ward deformation of the column plate. In addition, a parametric study showed that the CTOD was significantly influenced by the thickness of column plate, the beam web thickness, the beam height, the existence of weld access hole at the beam end, the size of electro-slag weld zone, etc.
社団法人日本建築学会の論文
2003-11-30