Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Modeling Parameters for Column-Tree Type Steel Beam-Column Connections

컬럼-트리 형식 철골모멘트 접합부의 모델링 변수제안

  • An, Heetae (Department of Architecture Engineering, Hanyang University) ;
  • Kim, Taewan (Department of Architecture Engineering, Kangwon National University) ;
  • Yu, Eunjong (Department of Architecture Engineering, Hanyang University)
  • 안희태 (한양대학교 건축공학과) ;
  • 김태완 (강원대학교 건축공학과) ;
  • 유은종 (한양대학교 건축공학과)
  • Received : 2022.11.09
  • Accepted : 2022.11.17
  • Published : 2023.01.01
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Abstract

The column-tree type steel beam-column connections are commonly used in East Asian countries, including Korea. The welding detail between the stub beam and column is similar to the WUF-W connection; thus, it can be expected to have sufficient seismic performance. However, previous experimental studies indicate that premature slip occurs at the friction joints between the stub and link beams. In this study, for the accurate seismic performance evaluation of column-tree type moment connections, a moment-slip model was proposed by investigating the previous test results. As a result, it was found that the initial slip occurred at about 25% of the design slip moment strength, and the amount of slip was about 0.15%. Also, by comparing the analysis results from models with and without the slip element, the influence of slip on the performance of overall beam-column connections was examined. As the panel zone became weaker, the contribution of slip on overall deformation became greater, and the shear demand for the panel zone was reduced.

Keywords

Acknowledgement

본 논문은 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호RS-2021-KA163162).

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