Study on the cumulative out-of-plane deformation of steel beam-culumn subjected to cyclic horizontal and torsional loads

水平扭转荷载作用下钢梁柱累积面外变形研究

• 批准号: 09650632
• 负责人: SHUGYO Minoru
• 金额: $ 2.37万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650632/
• 关键词: steel beam-column; steel pipe; cyclic behavior; lateral load; out-of-plane deformation; elastoplastic instability; torsion; 鋼管柱; 繰返し載荷; 崩壊

Elastoplastic unstable behavior divergence of cumulative out-of-plane deformation, of a beam-column with hollow circular section subjected to proportional cyclic loading of horizontal and torsional loads under constant. axial force was investigated. Since it. had been clarified by the authors that the lateral force caused by the horizontal displacement of the column top and torsional load is the cause of the unstable behavior the experiments were done by replacing the torsional load with a small constant lateral load.The experiments were performed using 6 test specimens under the condition tha.t constant lateral force H_2 is 0.1H_y_2 and constant axial force is 0 or 0.3F_y_x or 0.4F_y_x or O.5F_y_x, where H_y_x is the initial yield lateral force and F_y_x is the initial yield axial force of the beam-column.The results showed that. a remarkable cumulative out-of-plane deformation occures in the beam-column subjected to cyclic horizontal load under a constant lateral load and a constant axial force and it has a tendency to diverge. The numerical method proposed by the authors can predict. the unstable behavior with good accuracy.

空心圆截面梁柱在恒定水平和扭转荷载比例循环荷载作用下累积面外变形的弹塑性不稳定行为散度。研究了轴向力。自从它。作者已经澄清，由柱顶水平位移和扭转载荷引起的侧向力是不稳定行为的原因，实验是通过用小的恒定侧向载荷代替扭转载荷来完成的。实验使用恒定侧向力H_2为0.1H_y_2、恒定轴向力为0或0.3F_y_x或0.4F_y_x或的情况下的6个试样O.5F_y_x，其中H_y_x为梁柱初始屈服侧向力，F_y_x为梁柱初始屈服轴力。在恒定侧向荷载和恒定轴力作用下，承受水平循环荷载的梁柱会出现显着的累积面外变形，并有发散的趋势。作者提出的数值方法可以预测。具有良好准确性的不稳定行为。

项目成果

Shugyo, M and Li, Jian Ping: ""Inelastic Instability of Steel Pipe Beam-Column subjected to Cyclic Horizontal and Torsional Loads"" Proc.of the 5th International Colloquium on Stability and Ductility of Steel Structures. 553-560 (1997)

Shugyo，M，李建平：“循环水平和扭转荷载作用下钢管梁柱的非弹性失稳”，第五届国际钢结构稳定性与延性学术研讨会论文集。

M.Shugyo and J.P.Li: "Inelastic Instability of Steel Pipe Beam-Column subjected to Cyclic Horizontal and Torsional Loads" Proceedings of the 5-th international colloquium on stability and ductility of steel structures.

M.Shugyo 和 J.P.Li：“循环水平和扭转载荷下钢管梁柱的非弹性失稳”第五届国际钢结构稳定性和延性学术研讨会论文集。

修行 稔、李 剣平、前田将範: "小さな横荷重の下で繰返し水平力を受ける円形鋼管柱の構面外変形" 日本建築学会九州支部研究報告. 第38号. 521-524 (1999)

Minoru Shugyo、Kenpei Lee、Masanori Maeda：“在小横向荷载下承受重复水平力的圆形钢管柱的面外变形”日本建筑学会九州分会研究报告第 38. 521-524 号（1999 年）。 ）

修行稔: "小さな横荷重の下で繰返し水平力を受ける円形鋼管柱の構面外変形" 日本建築学会九州支部研究報告. 第38号. 521-524 (1999)

Minoru Shugyo：“在小横向荷载下承受重复水平力的圆形钢管柱的面外变形”日本建筑学会九州分会研究报告第38. 521-524号（1999）。

M.Shugyo and J.P.Li: "Inelastic Instability of Steel Pipe Beam-Column subjected to Cyclic Horizontal and Torsional Loads" Proceedings of the 5-th international colloquium on stability and ductility of steel structures. 553-560 (1997)

M.Shugyo 和 J.P.Li：“循环水平和扭转载荷下钢管梁柱的非弹性失稳”第五届国际钢结构稳定性和延性学术研讨会论文集。