Analysis Study on Fracture of Beam-to-Column Welded Connection with non-scallop methods by nonlinear fracture mechanics

梁柱焊接连接非扇贝形断裂非线性断裂力学分析研究

• 批准号: 06650621
• 负责人: NAKAGOMI Tadao
• 金额: $ 1.54万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650621/
• 关键词: nonlinear fracture mechanics; non-scallop method; J integraiion; safety to the earthquake; toughness of steel; charpy value; J積分; シャルピー値

Scallops of the beam-web at welded beam-to-column connections of steel frames bring partial loss of cross sections at the part subjected to large bending moments when a severe earthquake occurs. Therefore, they are not desirable from the point of view of mechanical behavior.This report presents the bending tests performed using specimens of beam-to-column joints on shop assembling carried out to investigate the effect of non-scallop methods and beam-scallops on fracture behavior, ultimate strength and deformation capacity of the steel beam-ends. It is concluded that a beam without scallops has earlier brittle fracture and higher strength, and larger deformation capacity than a conventional beam with scallops. Finally, it recommends the details of the end of the beam of the non-scallop method of construction with the cost performance being based from the view point of the design, the building.

钢框架梁柱焊接节点的梁腹板在强震作用下，在弯矩较大的部位会造成部分截面损失。因此，从力学性能的角度来看，它们是不可取的。本文介绍了采用车间组装的梁柱节点试件进行的弯曲试验，以研究无扇形和梁扇形方法对钢梁端的断裂行为、极限强度和变形能力的影响。结果表明，与常规的有扇形梁相比，无扇形梁的脆性断裂更早，强度更高，变形能力更大。最后，从设计的角度，从建筑的角度，提出了无扇形法施工的梁端细部设计方案，并提出了性价比的建议。

项目成果

中込忠男,藤田哲也,南圭祐,村井正敏,佐々木康彰: "ノンスカラップ工法が柱梁接合部の変形能力に及ぼす影響に関する実験的研究 その1 圧延H形鋼梁(SM490A)を用いた場合" 日本建築学会大会学術講演梗概集 C-1 構造III. 631-632 (1996)

Tadao Nakagomi、Tetsuya Fujita、Keisuke Minami、Masatoshi Murai、Yasuaki Sasaki：《无扇形工法对柱梁节点变形能力影响的实验研究第1部分：使用轧制H型钢梁时（SM490A） ” Nippon Kenchiku. 学术会议学术讲座摘要 C-1 Structure III. 631-632 (1996)

中込忠男,藤田哲也,南圭祐,村井正敏,佐々木康彰: "ノンスカラップ工法が柱梁接合部の変形能力に及ぼす影響に関する実験的研究 その2 溶接組立H形鋼梁(SM490A)を用いた場合" 日本建築学会大会学術講演梗概集、C-1構造III. 633-634 (1996)

中込忠雄、藤田哲也、南圭介、村井正敏、佐佐木康明：《无扇形工法对梁柱节点变形能力影响的实验研究第2部分使用焊接装配式H型钢梁（SM490A）时” 日本建筑学会会议学术讲座摘要，C-1 结构 III. 633-634 (1996)

Tadao Nakagomi, Tetsuya Fujita, Keisuke Minami, Masatoshi Murai, Yasuaki Sasaki.: "Experimental Study on Effect of NON-SCALLOPS on Deformation Capacities of Beam-to-Column Welded Joints Part 1.Using H-Rolled Beam with SM490A Class Steel" SUMMARIES OF TECH

Tadao Nakagomi、Tetsuya Fujita、Keisuke Minami、Masatoshi Murai、Yasuaki Sasaki.：“非扇贝对梁柱焊接接头变形能力影响的实验研究第 1 部分：使用 SM490A 级钢的 H 型轧制梁”摘要

Tadao Nakagomi, Tetsuya Fujita, Keisuke Minami, Masatoshi Murai, Yasuaki Sasaki.: "Experimental Study on Effect of NON-SCALLOPS on Deformation Capacities of Beam-to-Column Welded Joints Part 2.Using H-Built-Up Beam with SM490A Class Steel" SUMMARIES OF TE

Tadao Nakagomi、Tetsuya Fujita、Keisuke Minami、Masatoshi Murai、Yasuaki Sasaki.：“非扇贝对梁柱焊接接头变形能力影响的实验研究第 2 部分：使用 SM490A 级钢的 H 型组合梁