Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Effect of Access Hole Configuration Parameters on Cyclic Behavior for WUF-W Connections

액세스 홀 형상변수가 WUF-W 접합부 반복거동에 미치는 영향

  • Received : 2016.10.11
  • Accepted : 2016.12.19
  • Published : 2017.01.30
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Abstract

The welded unreinforced flange-welded web (WUF-W) connection is one of seven prequalified connections for special moment frames (SMF) specified in AISC 358-10 (2010). Previous studies reported that the cyclic behavior of WUF-W connections was strongly affected by weld access hole geometry, and some WUF-W connections did not satisfy the requirements for SMF connections. For investigating in detail the effect of access hole configurations on the cyclic behavior of WUF-W connections, this study conducts three dimensional nonlinear finite element analyses. This study shows that the seismic behavior of WUF-W connections are strongly affected by two configuration parameters, access hole slope and length of flat portion. To satisfy the requirement for SMF connections, this study proposes a range of the access hole slope and length of flat portion for WUF-W connections considering different span-to-depth ratios, beam depths, and material types.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. AISC.(2010). Prequalified connections for special and intermediate steel moment frames for seismic applications (AISC-358). American Institute of Steel Construction Inc.
  2. AISC.(2010). Seismic Provisions for Structural Steel Buildings (AISC-341). American Institute of Steel Construction Inc.
  3. Atashzaban, A., Hajirasouliha, I., Jazany, R,A., & Izadinia, M.(2005). Optimum drilled flange moment resisting connections for seismic regions. Journal of Constructional Steel Research.
  4. AWS.(2009). Structural Welding Code-Seismic Supplement., AWS D1.8/D1.8M.
  5. Chi, W.M., Deierlein, G.G., & Ingraffea, A.R. (1997). Finite element Fracture Mecanics Investigation of Welded Beam-Column Connection. SAC Joint Venture, Report No. SACIBD-97-05, Sacramento, CA.
  6. ABAQUS Analysis User's Manual. (2010). Providence RI. Dassault System
  7. El-Tawil, S., Mikesell, T., Vidarsson, E., & Kunnath, S, K. (1998). Strength And Ductility Of FR Welded-Bolted Connections. SAC Joint Venture
  8. FEMA. (2000). Recommended Seismic Design Criteria For New Steel Moment Frame Buildings. SAC Joint Venture.
  9. Han, S.H., Moon, K.H., & Jung, J. (2014). Cyclic Performance of Welded Unreinforced Flange-Welded Web moment Connections. Earthq. Spectra, 30(4), 1663-1681 https://doi.org/10.1193/080212EQS250M
  10. Hancock, J, W., & Mackenzie, A, C. (1976). On the mechanisms of ductile failure in high-strength steels subjected to multi-axial stress-states. Journal of the Mechanics and Physics of Solids, 24 (2).
  11. Kaufmann, E, J., Metrovich, B., & Pense, A, W. (2001). Characterization of Cyclic Inelastic Strain Behavior on Properties of A572 Gr. 50 and A913 Gr. 50 Rolled Sections. Advanced Technology for Large Structural Systems.
  12. Krawinkler, H., Gupta, A., Medina, R., & Luco, N. (2000). Loading histories for seismic performance testing of SMRF components and assemblies. SAC Joint Venture, Rep. No. SAC/BD-00/10, Sacramento, CA.
  13. Lee, D., Cotton, S, C., Hajjar, J, F., Dexter, R, J., Ye, Y., & Ojard, S, D. (2005). Cyclic behavior of steel moment-resisting connections reinforced by alternative column stiffener details I. Connection performance and continuity plate detailing. Engineering Journal.
  14. Lu, L.W., Ricles, J.M., & Fisher, J.W. (2000). Critical issues in achieving ductile behavior of welded moment connections. Journal of Constructional Steel Research. Jul;55,325-341 https://doi.org/10.1016/S0143-974X(99)00092-9
  15. Mao, C., Ricles, J., Lu, L, W., & Fisher, J. (2001). Effect of local details on ductility of welded moment connections. Journal of Structural engineering, 127(9).
  16. Malley J. (1998). SAC steel project: Summary of phase 1 testing investigation results. Engineering Structures. Apr-Jun; 20(4-6):300-309. https://doi.org/10.1016/S0141-0296(97)00033-3
  17. Ricles, J, M., Mao, C., Lu, L, W., & Fisher, J, W. (2002). Inelastic cyclic testing of welded unreinforced moment connections. Journal of Structural Engineering, 128(4).
  18. Stojadinovic, B., Goel, S., Lee, K., Margarian, A., & Choi, J. (2000). Parametric Tests on Unreinforced Steel Moment Connections. Journal of Structural Engineering, 126:1(40). https://doi.org/10.1061/(ASCE)0733-9445(2000)126:1(40)

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