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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

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.

Acknowledgement

Supported by : 한국연구재단

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