Advances in Computational Design

  • 제3권3호
  • /
  • Pages.233-267
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  • 2018
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  • 2383-8477(pISSN)
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  • 2466-0523(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A study on detailing gusset plate and bracing members in concentrically braced frame structures

  • Hassan, M.S. (Civil Engineering, School of Engineering, National University of Ireland Galway) ;
  • Salawdeh, S. (Civil Engineering, School of Engineering, National University of Ireland Galway) ;
  • Hunt, A. (AECOM) ;
  • Broderick, B.M. (Department of Civil, Structural & Environmental Engineering, Trinity College Dublin) ;
  • Goggins, J. (Civil Engineering, School of Engineering, National University of Ireland Galway)
  • 투고 : 2017.06.20
  • 심사 : 2018.07.12
  • 발행 : 2018.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Conventional seismic design of concentrically braced frame (CBF) structures suggests that the gusset plate connecting a steel brace to beams and/or columns should be designed as non-dissipative in earthquakes, while the steel brace members should be designed as dissipative elements. These design intentions lead to thicker and larger gusset plates in design on one hand and a potentially under-rated contribution of gusset plates in design, on the other hand. In contrast, research has shown that compact and thinner gusset plates designed in accordance with the elliptical clearance method rather than the conventional standard linear clearance method can enhance system ductility and energy dissipation capacity in concentrically braced steel frames. In order to assess the two design methods, six cyclic push-over tests on full scale models of concentric braced steel frame structures were conducted. Furthermore, a 3D finite element (FE) shell model, incorporating state-of-the-art tools and techniques in numerical simulation, was developed that successfully replicates the response of gusset plate and bracing members under fully reversed cyclic axial loading. Direct measurements from strain gauges applied to the physical models were used primarily to validate FE models, while comparisons of hysteresis load-displacement loops from physical and numerical models were used to highlight the overall performance of the FE models. The study shows the two design methods attain structural response as per the design intentions; however, the elliptical clearance method has a superiority over the standard linear method as a fact of improving detailing of the gusset plates, enhancing resisting capacity and improving deformability of a CBF structure. Considerations were proposed for improvement of guidelines for detailing gusset plates and bracing members in CBF structures.

키워드

과제정보

연구 과제 주관 기관 : Science Foundation Ireland Marine and Renewable Energy Ireland (MaREI)

참고문헌

  1. ABAQUS (2013), Analysis User's Manual I-V, Version 6.13, ABAQUS, Inc., Dassault Systemes, U.S.A.
  2. Bjorhovde, R. and Chakrabarti, S. (1985), "Tests of full-size gusset plate connections", J. Struct. Eng., 111(3), 667-684. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:3(667)
  3. Broderick, B.M., Goggins, J., Beg, D., Elghazouli, A.Y., Mongabure, P., Le Maoult, A., Hunt, A., Salawdeh, S., Moze, P. and O'Reilly, G. (2015), "Assessment of the seismic response of concentrically-braced steel frames", Exp. Res. Earthq. Eng., Springer, Berlin, Germany.
  4. Brown, V.L.S. (1989), "Stability of gusseted connections in steel structures", Ph.D. Dissertation, University of Delaware, U.S.A.
  5. Eurocode (1993), Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings, European Committee for Standardization (CEN); Brussels, Belgium.
  6. Eurocode (2004), Eurocode 8 : Design of Structures for earthquake resistance Part 1: General rules, seismic actions and rules for buildings, European Committee for Standardization (CEN); Brussels, Belgium.
  7. Chaboche, J.L. (1986), "Time independent constitutive theories for cyclic plasticity", J. Plasticity, 2(2), 149-188. https://doi.org/10.1016/0749-6419(86)90010-0
  8. Cheng, J.J.R., Yam, M.C.H. and Hu, S.Z. (1994), "Elastic buckling strength of gusset plate connections", J. Struct. Eng., 120(2), 538-559. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:2(538)
  9. Coffin, L. (1954), "A study of the effect of cyclic thermal stresses on a ductile metal", Trans. ASME, 76, 931-950.
  10. ECCS (1986), "Recommended testing procedure for assessing the behaviour of structural steel elements under cyclic loads", ECCS Technical Committee 1, Structural Safety and Loadings, Technical Working Group 1.3, Seismic Design, ECCS, Brussels, Belgium.
  11. English, J. and Goggins, J. (2012), "Nonlinear seismic response of concentrically braced frames using frames using finite element models", 15th World Conference on Earthquake Engineering, Lisbon, Portugal, September.
  12. Fell, B.V. (2008), "Large-scale testing and simulation of earthquake-induced ultra low cycle fatigue in bracing members subjected to cyclic inelastic buckling", University of California, Davis, MA, U.S.A.
  13. Gardner, L., Saari, N. and Wang, F. (2010), "Comparative experimental study of hot-rolled and cold -formed square and rectangular hollow sections", Thin-Walled Struct., 48(7), 495-507. https://doi.org/10.1016/j.tws.2010.02.003
  14. Goggins, J. (2004), "Earthquake resistance hollow and filled steel braces", Ph.D. Dissertation, Trinity College, University of Dublin, Ireland.
  15. Goggins, J., Broderick, B.M., Elghazouli, A.Y., Salawdeh, S., Hunt, A., Mongabure, P. and English, J. (2018), "Shake table testing of concentrically braced steel structures with realistic connection details subjected to earthquakes", Structures, 13, 102-118. https://doi.org/10.1016/j.istruc.2017.12.003
  16. Goggins, J. and Salawdeh, S. (2013), "Validation of nonlinear time history analysis models for single-storey concentrically braced frames using full-scale shake table tests", Earthq. Eng. Struct. Dynam., 42(8), 1151-1170. https://doi.org/10.1002/eqe.2264
  17. Goggins, J.M., Broderick, B.M., Elghazouli, A.Y. and Lucas, A.S. (2006), "Behaviour of tubular steel members under cyclic axial loading", J. Construct. Steel Res., 62(1-2), 121-131. https://doi.org/10.1016/j.jcsr.2005.04.012
  18. Haddad, M. (2015), "Concentric tubular steel braces subjected to seismic loading: Finite element modelling", J. Construct. Steel Res., 104, 155-166. https://doi.org/10.1016/j.jcsr.2014.10.013
  19. Haddad, M., Brown, T. and Shrive, N. (2004), "Fintie element modelling of concentriccally braced frames for earthquakes", 13th World Conference on Earthquake Engineering, Vancouver, Canada, August.
  20. Hassan, M.S., Goggins, J. and Salawdeh, S. (2015), "Charactersing the effect of global and local geometric imperfections on the numerical performance of a brace member", J. Physics: Conference Series, 628(1), 012063. https://doi.org/10.1088/1742-6596/628/1/012063
  21. Hassan, M.S., Salawdeh, S. and Goggins, J. (2018), "Determination of geometrical imperfection models in finite element analysis of structural steel hollow sections under cyclic axial loading", J. Construct. Steel Res., 141, 189-203. https://doi.org/10.1016/j.jcsr.2017.11.012
  22. Hu, S. and Cheng, J.J.R. (1987), "Compressive behavior of gusset plate connections", Structural Engineering Rep. No. 153; University of Alberta, Canada.
  23. Hunt, A.D. (2013), "Design and analysis of concentrically braced steel frames under seismic loading". Ph.D. Dissertation, Trinity College Dublin, Dublin, Ireland.
  24. Kavinde, A.M. and Deierlein, G.G. (2004), "Micromechanical simulation of earthquake-induced fracture in steel structures", Report no.145; Stanford University, San Francisco, California.
  25. Lehman, D.E., Roeder, C.W., Herman, D., Johnson, S. and Kotulka, B. (2008), "Improved seismic performance of gusset plate connections", J. Struct. Eng., 134(6), 890-901. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:6(890)
  26. Manson, S.S. (1953), "Behaviour of materials under conditions of thermal stress", Heat Transfer Symposium, University of Michigan Engineering Research Institute, Michigan, U.S.A.
  27. Nip, K.H., Gardner, L., Davies, C.M. and Elghazouli, A.Y. (2010), "Extremely low cycle fatigue tests on structural carbon steel and stainless steel", J. Construct. Steel Res., 66(1), 96-110. https://doi.org/10.1016/j.jcsr.2009.08.004
  28. Nip, K.H., Gardner, L. and Elghazouli, A.Y. (2010), "Cyclic testing and numerical modelling of carbon steel and stainless steel tubular bracing members", Eng. Struct., 32(2), 424-441. https://doi.org/10.1016/j.engstruct.2009.10.005
  29. Nip, K.H., Gardner, L. and Elghazouli, A.Y. (2013), "Ultimate behaviour of steel braces under cyclic loading", Proc. Inst. Civil Eng. - Struct. Build., 166, 219-234. https://doi.org/10.1680/stbu.11.00028
  30. Palmgren, A. (1924), "Die Lebensdauer von Kugellagern (The life of roller bearings)", Zeitschrift des Vereines Deutscher Ingenieure, 68(14), 339-341.
  31. Rudland, D.L. and Brust, F. (1997), "The effect of cyclic loading during ductile tearing on the fracture resistance of nuclear pipe steels", Fatigue Fracture Mech, 27, 406-426.
  32. Ryan, T., Broderick, B.M., Hunt, A., Goggins, J. and Salawdeh, S. (2017), "Recommendations for numerical modelling of concentrically braced steel frames with gusset plate connections subjected to earthquake ground motion", J. Struct. Integrity Maintenance, 2(3), 168-180. https://doi.org/10.1080/24705314.2017.1354154
  33. Salawdeh, S., English, J., Goggins, J., Elghazouli, A.Y., Hunt, A. and Broderick, B.M. (2017), "Shake table assessment of gusset plate connection behaviour in concentrically braced frames", J. Construct. Steel Res., 138, 432-448. https://doi.org/10.1016/j.jcsr.2017.07.022
  34. Salawdeh, S. and Goggins, J. (2013), "Numerical simulation for steel braces incorporating a fatigue model", Eng. Struct., 46, 332-349. https://doi.org/10.1016/j.engstruct.2012.07.036
  35. Tremblay, R. (2002), "Inelastic seismic response of steel bracing members", J. Construct. Steel Res., 58(5-8), 665-701. https://doi.org/10.1016/S0143-974X(01)00104-3