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.

1. 서 론
2. 컬럼-트리형 모멘트 접합부에 대한 실험 연구
3. 컬럼-트리형 모멘트접합부의 모델링
    3.1 모멘트-슬립 요소
    3.2 패널존 요소
    3.3 기둥 및 보 부재
4. 제안모델을 활용한 비선형 해석 및 결과분석
    4.1 보-기둥 접합부 실험체의 비선형 해석
    4.2 슬립 거동의 영향 분석
5. 결 론
감사의 글
REFERENCES

• 안희태(한양대학교 건축공학과 석사과정) | An Heetae (Graduate Student, Department of Architecture Engineering, Hanyang University)
• 김태완(강원대학교 건축공학과 교수) | Kim Taewan (Professor, Department of Architecture Engineering, Kangwon National University)
• 유은종(한양대학교 건축공학과 교수) | Yu Eunjong (Professor, Department of Architecture Engineering, Hanyang University) Corresponding author