Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Evaluation of Gusset Plate Connection Stiffness in Braced Frames

가새 골조에서 거싯 플레이트 연결부의 강성 평가

  • 유정한 (대한주택공사 도시재생사업단)
  • Received : 2008.11.28
  • Accepted : 2009.03.30
  • Published : 2009.04.27
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Abstract

To improve braced frame performance, the connection strength, stiffness, and ductility must be directly considered in the frame design. The resistance of the connection must be designed to resist seismic loads and to help provide the required system ductility. In addition, the connection stiffness affects the dynamic response and the deformation demands on the structural members and connections. In this paper, current design models for gusset plate connections are reviewed and evaluated usingthe results of past experiments. Current models are still not sufficient to provide adequate connection design guidelines and the actual stress and strain states in the gusset plate are very nonlinear and highly complex. Design engineers want simple models with beam and column elements to make an approximate estimation of system and connection performance. The simplified design models are developed and evaluated to predict connection stiffness and system behavior. These models produce reasonably accurate and reliable estimation of connection stiffness.

가새골조 성능을 개선하기 위해 연결부 (거싯 플레이트) 강도, 강성, 연성이 골조 디자인에 직접적으로 고려되어야 한다. 연결부의 강도는 지진력에 저항하도록 디자인 되어야하고 필요한 골조시스템의 연성을 확보하는데 기여해야한다. 그리고 연결부의 강성은 구조요소와 연결부의 동적 반응과 변위 요구에 영향을 준다. 이 논문에서 지난 실험 결과를 이용하여 거싯 플레이트 연결부에 대한 현 디자인 모델을 검토하고 평가한다. 현 디자인 모델은 연결부 디자인 가이드라인을 주기엔 적절하지 못하고 실제 거싯 플레이트의 응력과 변위 상태는 비선형이고 굉장히 복잡하다. 구조 디자이너들은 시스템과 연결부의 성능을 대략적으로 예측하기 위해 보와 기둥을 포함한 단순한 모델을 원한다. 이를 위해 단순화한 디자인 모델이 개발되고 평가된다. 이 모델은 비교적 정확하고 신뢰성 있는 연결부 강성 평가를 제공한다.

Keywords

References

  1. AISC(2001) Manual of Steel Construction Load and Resistance Factor Design, 3rd Edition, American Institute of Steel Construction, Chicago, IL
  2. AISC(2005) Seismic Provisions for Structural Steel Buildings, American Institute of Steel Construction, Chicago, IL
  3. ANSYS(2005) ANSYS Theory Reference, ANSYS Inc., Southpointe, 275 Technology Drive, Canonsburg, PA
  4. Aslani, F. and Goel, S. C.(1989) Experimental and Analytical Study of the Inelastic Behavior of Double Angle Bracing Members under Severe Cyclic Loading, Research report UMCE 89-5, Departmentof Civil Engineering, University of Michigan, Ann Arbor, MI
  5. Astaneh-Asl, A(1989) Simple Methods for Design of Gusset Plates, Proceedings ASCE Structures Conference, San Francisco, CA, pp.345-354
  6. Astaneh-Asl, A, Goel, S. C, and Hanson, R. D.(1982) Cyclic Behavior of Double Angle Bracing Members with End Gusset Plates, Research report UMCE 82R7, Department of Civil Engineering, University of Michigan, Ann Arbor, MI
  7. Brown, V. L. S.(1988) Stability of Gusseted Connections in Steel Structures, Doctorial Dissertation, University of Delaware
  8. El-Tayem, A. A., and Goel, S. C.(1985) Cyclic Behavior of Angle X-Bracing with Welded Connections, Research report UMCE 85-4, Department of Civil Engineering, University of Michigan, Ann Arbor, MI
  9. Grondin, G.Y., Nast, T.E., and Cheng, J. J. R.(2000) Strength and Stability of Corner Gusset Plates under Cyclic Loading, Proceeding of Annual Technical Session and Meeting, Structural Stability Research Council
  10. Gross, J. L., and Cheok, G.(1988) Experimental Study of Gusseted Connections for Laterally Braced Steel Buildings, National Institute of Standards and Technology, NISTIR 88-3849, Gaithersburg, MD
  11. Hu, S. Z., and Cheng, J. J. R.(1987) Compressive Behavior of Gusset Plate Connections Structural Engineering Report NO 153, University of Alberta
  12. Johnson, S.(2005) Improved Seismic Performance of Special Concentrially Braced Frames, M.S. Thesis, University of Washington
  13. Po-Chien(2009) Analytical Investigation of Special Concentrically Braced Frames, dissertation in preparation, Department of Civil Engineering, University of Washington, Seattle, Washington
  14. Rabinovitch, J. S. and Cheng, J. J. R.(1993) Cyclic Behavior of Steel Gusset Plate Connections, Structural Engineering Report No. 191, University of Alberta
  15. Roeder, C. W.(2001) State of Art Report – Connection Performance, FEMA 355D, Federal Emergency Management Agency, Washington, D.C
  16. Roeder, C., Lehman, D., and Yoo, J. H.(2005) Improved Seismic Design of Steel frame Connections. International Journal of Steel Structures, KSSC, vol. 5, No 2, pp.141-153 https://doi.org/10.12989/scs.2005.5.2_3.141
  17. Thornton, W. A.(1984) Bracing Connections for Heavy Construction, AISC, Engineering Journal, Vol. 21, No 3, pp.139-148
  18. Whitmore, R. E.(1952) Experimental Investigation of Stresses in Gusset Plates, Bulletin NO. 16, Engineering experiment station, University of Tennessee
  19. Yam, M. C. H, and Cheng, J. J. R.(2002) Behavior and Design of Gusset Plate Connections in Compression, Journal of Constructional Steel Research, v 58, n 5-8, pp.1143-1159 https://doi.org/10.1016/S0143-974X(01)00103-1
  20. Yam, M. C. H.(1994) Compressive Behavior and Strength of Steel Gusset Plate Connections, Doctorial Dissertation, University of Alberta
  21. Yoo, J. H.(2006) Analytical Investigation on the Seismic Performance of Special Concentrically Braced Frames, dissertation, Department of Civil Engineering, University of Washington, Seattle, Washington