Earthquake resistant design formula for steel beam-columns with regard to deterioration phenomena under repeated loading

考虑重复荷载劣化现象的钢梁柱抗震设计公式

• 批准号: 03555127
• 负责人: NAKAMURA Tsuneyoshi
• 金额: $ 4.74万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03555127/
• 关键词: beam-column design formula; earthquake resistant design; multistory steel frames; symmetry limit; steady-state limit; unstable behavior; cyclic plastic collapse; combined nonlinear behavior; 鋼構造骨組部材; 繰り返し載荷時挙動; 限界状態設計; 構面内挙動限界; 鋼梁-柱繰り返し曲げ実験

1. The symmetry limit and steady-state limit have been theoretically predicted for a unit sub-frame consisting of one elasto-plastic column and four elastic beams cut out from a multistory multibay planar frames. Beam-column design formulas and diagrams have been proposed based upon these theoretical prediction results.2. Repeated bending tests of steel beam-columns with box and H-shaped cross sections subjected to constant axial compression have been performed to clarify the cyclic growth phenomena of out-of-plane deformation.3. It has been revealed by the symmetry limit theory that an unknown type of overall collapse behavior characterized by a cyclic growth of bow-like-shaped overall deflection mode is possible to occur in multistory multibay weak-beam planar frames subjected to repeated horizontal top displacement. A numerical response analysis of the frames is performed to verify the theoretical predictions.4. A computer analysis program has been developed to predict the symmetry limit and steady-state limit of planar frames with arbitrary shapes. Several new types of critical behavior have been found by means of this program.5. The original symmetry limit theory for beam-columns subjected to repeated lateral displacement has been extended to the problem of beam-columns subjected to repeated lateral force.

1.本文对从多层多跨平面框架中切出的由一根弹塑性柱和四根弹性梁组成的单元子框架的对称极限和稳态极限进行了理论预测。在此基础上，提出了梁柱设计计算公式和设计简图.进行了箱形和H形截面钢压弯构件的反复弯曲试验，研究了平面外变形的循环增长现象.对称极限理论揭示了在顶部重复水平位移作用下，多层多跨弱梁平面框架可能发生以弓形总挠度模态循环增长为特征的未知类型的整体倒塌行为。对框架进行了数值响应分析，验证了理论预测的正确性.本文编制了一个计算任意形状平面刚架对称极限和稳定极限的计算机分析程序。通过该程序发现了几种新的临界行为类型.本文将原来的反复侧向位移下的梁柱对称极限理论推广到反复侧向力下的梁柱问题。

项目成果

上谷宏二: "繰返し水平載荷を受ける多層多スパン平面骨組の塑性崩壊挙動(その1:多層多スパン平面骨組の対称限界理論)" 日本建築学会構造系論文報告集. 435. 61-70 (1992)

Koji Uetani：“重复水平荷载作用下多层、多跨平面框架的塑性倒塌行为（第 1 部分：多层、多跨平面框架的对称极限理论）”日本建筑学会结构学论文集工程。435。61-70（1992）

Koji Uetani: "The Proceedings of this seminar has been published as“Stability and Ductility of Steel Structures under Cyclic Loading"(Cyclic plastic collapse of steel planar frames)" CRC press, 10 (1992)

Koji Uetani：“本次研讨会的论文集已出版为“循环载荷下钢结构的稳定性和延展性”（钢平面框架的循环塑性倒塌）”CRC press，10 (1992)

中村 恒善: "完全両振り横荷重を受ける片持梁-柱の対称限界(その2:実験による対称限界の存在の検証)" 構造工学論文集. 38B. 509-520 (1992)

Tsuneyoshi Nakamura：“承受完全振荡横向荷载的悬臂梁柱的对称性极限（第 2 部分：通过实验验证对称性极限的存在）”《结构工程学报》38B 509-520（1992 年）。

上谷 宏二: "繰り返し水平載荷を受ける梁降伏型多層多スパン平面骨組の崩壊挙動解析" 日本建築学会大会学術講演梗概集.

Koji Uetani：“反复水平荷载作用下的梁屈服多层多跨平面框架的倒塌行为分析”日本建筑学会会议学术讲座摘要。

上谷 宏二: "中実断面梁-柱のねじれを無視した構面内挙動限界理論" 日本建築学会大会学術講演梗概集. (北陸). (1992)

Koji Uetani：“忽略实体截面梁和柱扭转的面内行为的极限理论”日本建筑学会会议（北陆）学术讲座摘要（1992 年）。