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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationthe 8th International Conference on Structural Dynamics, EURODYN 2011
EditorsG. Lombaert, G. Muller, G. De Roeck, G. Degrande
Place of PublicationLeuven, Belgium
PublisherUniversity of Southampton, Institute of Sound Vibration and Research
Pages440-445
Number of pages6
ISBN (Electronic)9789076019314
Publication statusPublished - 2011 Jul
Event8th International Conference on Structural Dynamics, EURODYN 2011 - Leuven, Belgium
Duration: 2011 Jul 42011 Jul 6

Publication series

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

Other

Other8th International Conference on Structural Dynamics, EURODYN 2011
Country/TerritoryBelgium
CityLeuven
Period11-07-0411-07-06

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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