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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Bidirectional seismic performance of steel beam to circular tubular column connections with outer diaphragm
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Bidirectional seismic performance of steel beam to circular tubular column connections with outer diaphragm

机译：钢梁到带有外部膜片的圆钢管柱连接的双向抗震性能

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摘要

This paper presents an experimental investigation on the seismic behavior of H-beam to circular tubular column connections stiffened by an outer ring diaphragm. An innovative three-dimensional (3D) connection subassembly testing system was first described. Specimens representative of two-dimensional (2D) interior columns, 3D interior and exterior columns in a steel building frame were then tested to failure under unidirectional or bidirectional cyclic loads. Various specimen parameters are used to evaluate their effects on connection behavior. Test results indicate significantly different failure modes for 2D and 3D weak panel connections, with panel shear buckling and local distortion of outer diaphragm occurring only for 3D connections. The weak beam connections unexceptionally exhibited final fracture at the junction between diaphragm and beam flange. In contrast with weak beam connections, weak panel connections demonstrated better seismic performance and ductility. As a result, a seismic design philosophy considering panel zone yielding before beam flexural yielding is proposed. Based on experiment observations, small diaphragm width and simplified fillet welding are found to be feasible especially for weak beam connections, improving architectural appearance and facilitating construction. Strength evaluations also suggest that current AIJ design provisions may be appropriate when applied to panel zones in 3D connections.
机译：本文对H型钢与由外圈膜片加固的圆形圆柱柱连接的抗震性能进行了实验研究。首先描述了创新的三维（3D）连接子组件测试系统。然后测试了代表钢制建筑框架中的二维（2D）内柱，3D内柱和外柱的标本，使其在单向或双向循环载荷下失效。使用各种样本参数来评估它们对连接行为的影响。测试结果表明，对于2D和3D薄板连接，失效模式存在显着不同，面板剪切屈曲和外膜的局部变形仅发生在3D连接上。薄弱的梁连接在膜片和梁法兰之间的连接处毫无例外地表现出最终的断裂。与弱梁连接相反，弱面板连接具有更好的抗震性能和延展性。结果，提出了在梁弯曲屈服之前考虑板区屈服的抗震设计理念。根据实验观察，发现较小的膜片宽度和简化的角焊是可行的，特别是对于弱梁连接，改善建筑外观并便于施工。强度评估还表明，当前的AIJ设计规定适用于3D连接中的面板区域。

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  • 来源
    《Earthquake Engineering & Structural Dynamics》 |2011年第10期|p.1063-1081|共19页
  • 作者

    Wei Wang; Yiyi Chen; Wanqi Li; Roberto T. Leon;

  • 作者单位

    State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, People's Republic of China,Department of Structural Engineering, Tongji University, Shanghai 200092, People's Republic of China,School of Civil and Environmental Engineering, Georgia Tech, Atlanta, GA 30332-0355, U.S.A;

    State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, People's Republic of China,Department of Structural Engineering, Tongji University, Shanghai 200092, People's Republic of China;

    Department of Structural Engineering, Tongji University, Shanghai 200092, People's Republic of China;

    School of Civil and Environmental Engineering, Georgia Tech, Atlanta, GA 30332-0355, U.S.A;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    connections; cyclic tests; circular hollow sections; three-dimensional tests; seismic design;

    机译：连接;循环测试;圆形空心部分;三维测试;抗震设计;

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