Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Empirical Equations for Checking Validity of Access Hole Parameters for WUF-W Connections

WUF-W 접합부의 액세스 홀 형상변수 타당성 평가를 위한 경험식 제안

  • Han, Sang Whan (Dept. of Architectural Engineering, Hanyang University) ;
  • Yoon, Yong (Dept. of Architectural Engineering, Hanyang University) ;
  • Kim, Y. Debbie (Texas A&M University at Commerce, Department of Engineering and Technology)
  • 한상환 (한양대학교, 건축공학과) ;
  • 윤용 (한양대학교, 건축공학과) ;
  • Received : 2017.02.14
  • Accepted : 2017.07.24
  • Published : 2017.08.27
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Abstract

The welded unreinforced flange-welded web(WUF-W) connection is an all-welded moment connection, which is qualified for special moment frame(SMF) connections. However, previous studies reported that some WUF-W connections did not meet the drift requirement specified for SMF connections and such unexpected connection performance was resulted from weld access hole geometry. The objective of this study is to determine the permissible ranges of major access hole parameters such as access hole slope and the length of flat portion that lead to the satisfactory performance of WUF-W connections using Nonlinear finite element analyses are conducted. This study also proposes simple empirical equations to check the validity of access hole parameters to be selected in design process.

WUF-W 접합부는 부재의 접합이 모두 용접으로 이루어진 접합부이며, 특수모멘트골조(SMF) 인증접합부 중 하나이다. 하지만 선행 연구들을 통해 일부 WUF-W 접합부 실험체가 4% 층간변위비의 특수모멘트골조(SMF) 요구성능을 만족하지 못하였으며, 이는 액세스 홀 형상과 연관이 있음이 보고되었다. 본 연구에서는 비선형 유한요소 해석을 이용하여 WUF-W 접합부의 요구성능을 만족하기 위한 주요 액세스홀 형상변수의 허용범위를 결정하였다. 또한 WUF-W 접합부 설계과정에서 주요 액세스 홀 형상변수의 타당성을 평가할 수 있는 간단한 경험식을 제안하였다.

Keywords

References

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