変厚鋼板を梁フランジに用いた梁端溶接接合部の塑性変形能力と破断防止設計法

• Published in: Kou kouzou rombunshuu Vol. 19; no. 75; pp. 75_27 - 75_39
• Main Authors: 多賀, 謙蔵, 坂井, 悠佑, 吹田, 啓一郎, 井川, 大裕, 塚越, 治夫, 田邉, 義和
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本鋼構造協会 28.09.2012; Japanese Society of Steel Construction
• Subjects: beam-to-column connection; cyclic loading test; plastic deformation capacity; variable thickness plate; 塑性変形能力; 変厚鋼板; 柱梁接合部; 繰返し加力実験
• ISSN: 1880-9928; 1884-0329
• DOI: 10.11273/jssc.19.75_27

This paper presents the results of full-scale loading tests of beam-to-column subassmblages strengthened by TF (Thick-Flange) connection. TF connection is a moment frame connection with the thickness of the beam flange increased near the connection region to prevent fracture of the welded moment connection and effective to improve workability and quality of the welding. From test results, TF connection successfully avoid fracture initiated from welds and exhibited sufficient deformation capacity. The design method of the tapered thick flange is proposed to prevent a crack at the toe of the weld access hole and to keep the plastic region of the beam away form the welds.