Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Evalutation of the Seismic Performance of WUF-W Moment Connections with a Modified Access Hole

개선된 엑세스 홀 형상을 갖는 WUF-W접합부의 실험을 통한 내진성능평가

  • Han, Sang Whan (Architectural Engineering, Hanyang University) ;
  • Jung, Jin (Architectural Engineering, Hanyang University) ;
  • Moon, Ki-Hoon (Architectural Engineering, Hanyang University) ;
  • Kim, Jin Won (Steel Structure Research Division, RIST)
  • 한상환 (한양대학교 건축공학과) ;
  • 정진 (한양대학교 건축공학과) ;
  • 문기훈 (한양대학교 건축공학과) ;
  • 김진원 (포항산업과학연구원 강구조연구소)
  • Received : 2012.09.28
  • Accepted : 2012.11.16
  • Published : 2012.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Welded Unreinforced Flange-Welded Web (WUF-W) connection is one of Special Moment Frame (SMF) specified in ANSI/AISC-358. From the experimental test of WUF-W connection specimens conducted by the previous study, fracture occurred in the beam flange before achieving total inter-story drift angle of 0.04radian required for Special Moment Frames (SMF) system even though the specimens satisfied the design and detailing requirement specified in ANSI/AISC-358. These results are estimated as problem of the access hole geometry. In this study, a full-scale WUF-W connection specimen was made with a modified access hole geometry, and tested with the same test setting and loading as the previous test. From test results, the deformation capacity of the tested WUF-W connection specimen exceeded 4%, which is required for connections in SMF system. Comparing with the WUF-W specimens of the previous study, the strain demand of the beam flange in the tested specimen was decreased and energy dissipation capacity of the specimen was improved.

Keywords

References

  1. Youssef NFG, Bonowitz D, Gross JL. A survey of steel momnet resisting frame buildings affected by the 1994 Northridge earthquake. National Institute of Standard and Technology. 1995; Rep. No. NISTIR 5625.
  2. Ricles JM, Mao C, Lu LW, Fisher JW. Development and evaluation of improved ductile welded unreinforced flange connections. SAC Joint Venture, Sacramento, Calif. 2000;Rep. No. SAC/BD-00/24.
  3. Lee D, Cotton SC, Hajjar JF, Dexter RJ, Yee. Cyclic connections Reinforced by Alternative Column Stiffner Details I., Panel Zone Behavior and Doubler Plate Detailing. Engineering Journal. 2005a;42(4):189-214.
  4. Lee D, Cotton SC, Hajjar JF, Dexter RJ, Yee. Cyclic connections Reinforced by Alternative Column Stiffner Details II., Panel Zone Behavior and Doubler Plate Detailing. Engineering Journal. 2005b; 42(4):215-238.
  5. AISC. Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications. ANSI/AISC 358-05. American Institute of Steel Construction. Chicago. III. 2005.
  6. Hwang SH, Moon KH, Han SW, Lee JY. Inelastic Cyclec Loading Test on Welded Unreinforced Flange-Welded Web(WUF-W) Moment Connections. Journal of Architectural Institute of Korea. 2010; 26(10):61-68.
  7. Lu LW, Ricles JM, Fisher JW. Critical issues in achieving ductile behaviour of welded moment connections. Journal of Constructional Steel Research. 2000;55:325-341. https://doi.org/10.1016/S0143-974X(99)00092-9
  8. Mao C, Ricles J, Lu LW, Fisher J. Effect of local details on ductility of welded momnet connections. Journal of Structural Engineering. 2001;127(9):1036-1044. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:9(1036)
  9. AWS. Structural Welding Code-Seismic Supplement. AWS D1.8/D1.8M, American Welding Society. Miami. FL. 2009.
  10. AISC. Seismic provisions for structural steel buildings. ANSI/AISC 341-05. American Institute of Steel Construction. Chicago. Ill. 2005.
  11. AISC. Specification for Structural Steel Buildings. ANSI /AISC 360-05. American Institute of Steel Construction. Chicago. Ill. 2005.
  12. Krawinkler H, Gupta A, Medina R, Luco N. Loading histories for seismic performance testing of SMRF components and assemblies. SAC Joint Venture. Sacramento. Calif. 2000;Report No. SAC/BD-00/10.
  13. Ricles JM, Mao C, Lu LW, Fisher JW. Inelastic Cyclic Testing of Welded Unreinforced Moment Connections. Journal of Structural Engineering. 2002;128(4):429-440. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(429)
  14. El-Tawil S, Mikesell T, Vidarsson E, Kunnath SK. Strength and Ductility of FR Welded-Bolted Connections. SAC Joint Venture. 1998;Report No. SAC/BD-98/01.
  15. Han SW, Kwon, Moon KH. Cyclic behaviour of post-Northrdge WUF-B connections. Jounal of Constructional Steel Research. 2000;63(3):365-374.
  16. Ricles JM, Fisher JW, Lu LW, Kaufmann EJ. Development of improved welded moment connections for earthquake-resistant design. Journal of Structural Engineering. 2000; 58(19):565-604.