Experimental study on retrofitted steel beam-to-column connections of high-rise buildings

Yu-Lin Chung, Tomohiro Matsumiya, Takuya Nagae, Kunio Fukuyama, Masayoshi Nakashima

研究成果: Conference contribution

摘要

The seismic capacity of beam-to-column connections in steel high-rise frames is a matter of concern, particularly when they are subjected to long-period ground motions. A previous full-scale shaking table test conducted at E-Defense disclosed cracks and fractures in such beam-to-column connections. This paper examines the effects of three types of beam-to-column connection retrofit: supplemental welds, wing plates, and a haunch. The performance of a total of twenty-eight connections tested by the shaking table tests is evaluated. When the supplement welds are further applied to the web-to-column connection, the cumulative plastic rotation capacity is increased to eight times that of the connection without retrofit. For the wing plate and haunch connections, the critical section is moved from the beam end to the beam cross-section corresponding to the tip of the wing plates or the haunch, resulting in significant improvement of ductility by eight times that of the un-retrofitted connection.

原文English
主出版物標題the 8th International Conference on Structural Dynamics, EURODYN 2011
編輯G. Lombaert, G. Muller, G. De Roeck, G. Degrande
出版地Leuven, Belgium
發行者University of Southampton, Institute of Sound Vibration and Research
頁面440-445
頁數6
ISBN(電子)9789076019314
出版狀態Published - 2011 七月
事件8th International Conference on Structural Dynamics, EURODYN 2011 - Leuven, Belgium
持續時間: 2011 七月 42011 七月 6

出版系列

名字Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011

Other

Other8th International Conference on Structural Dynamics, EURODYN 2011
國家/地區Belgium
城市Leuven
期間11-07-0411-07-06

All Science Journal Classification (ASJC) codes

  • 硬體和架構
  • 電腦網路與通信
  • 控制與系統工程
  • 電氣與電子工程

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