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Critical review of the EC8 design provisions for buildings with eccentric braces

  • Bosco, Melina (Department of Civil Engineering and Architecture, University of Catania) ;
  • Marino, Edoardo M. (Department of Civil Engineering and Architecture, University of Catania) ;
  • Rossi, Pier Paolo (Department of Civil Engineering and Architecture, University of Catania)
  • Received : 2014.06.09
  • Accepted : 2014.12.08
  • Published : 2015.06.25

Abstract

The objections raised by researchers to the design provisions reported in Eurocode 8 make the efficient seismic performance of the eccentrically braced structures designed according to this code unlikely. Given the rationality and the number of the objections, this paper aims to summarize the criticism of researchers and report the opinion of the Authors. The objections raised to the design procedure of eccentrically braced structures regard aspects common to the design of steel structures and aspects specifically related to the design of eccentrically braced structures. The significance of these objections is also shown by means of exemplary cases.

Keywords

References

  1. AISC (2010), Seismic Provisions for Structural Steel Buildings, American Institute of Steel Construction, Chicago, IL.
  2. Amara, F., Bosco, M., Marino, E.M. and Rossi, P.P. (2014), "An accurate strength amplification factor for the design of SDOF systems with P-$\Delta$ effects", Earthq. Eng. Struct. Dyn., 43(4), 589-611. https://doi.org/10.1002/eqe.2361
  3. ASCE/SEI (2010), Minimum design loads for buildings and other structures, ASCE 7-10, American Society of Civil Engineers/Structural Engineering Institute, Reston, VA.
  4. Badalassi, M., Braconi, A., Caprili, S. and Salvatore, W. (2013), "Influence of steel mechanical properties on EBF seismic behavior", Bull. Earthq. Eng., 11(6), 2249-2285. https://doi.org/10.1007/s10518-013-9498-4
  5. Bernal, D. (1987), "Amplification factors for inelastic dynamic P-$\Delta$ effects in earthquake analysis", Earthq. Eng. Struct. Dyn., 15(5), 635-651. https://doi.org/10.1002/eqe.4290150508
  6. Bosco, M. and Rossi, P.P. (2009), "Seismic behaviour of eccentrically braced frames", Eng. Struct., 31(3), 664-674. https://doi.org/10.1016/j.engstruct.2008.11.002
  7. Bosco, M. and Rossi, P.P. (2013a), "A design procedure for dual eccentrically braced systems: theoretical formulation", J. Constr. Steel Res., 80, 440-452. https://doi.org/10.1016/j.jcsr.2012.09.019
  8. Bosco, M. and Rossi, P.P. (2013b), "A design procedure for dual eccentrically braced systems: numerical investigation", J. Constr. Steel Res., 80, 453-464. https://doi.org/10.1016/j.jcsr.2012.08.003
  9. Bosco, M. and Marino, E.M. (2013), "Design method and behavior factor for steel frames with buckling restrained braces", Earthq. Eng. Struct. Dyn., 42(8), 1243-1263. https://doi.org/10.1002/eqe.2269
  10. Bosco, M., Marino, E.M. and Rossi, P.P. (2014), "Proposal of modifications to the design provisions of Eurocode 8 for buildings with split K eccentric braces", Eng. Struct., 61, 209-223. https://doi.org/10.1016/j.engstruct.2013.07.022
  11. Chao, S.H., Khandelwal, K. and El-Tawil, S. (2006), "Ductile web fracture initiation in steel shear links", J. Struct. Eng., ASCE, 132(8), 1192-1200. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:8(1192)
  12. Decreto Ministeriale 14 gennaio (2008), Nuove norme tecniche per le costruzioni, Exeo edizioni. (in Italian)
  13. Della Corte, G., D'Aniello, M. and Mazzolani, F.M. (2007), "Inelastic response of shear links with axial restraints: numerical vs analytical results", Proceeding of the 5th International conference on Advances in Steel Struct., ICASS, 3, 651-656.
  14. Della Corte, G., D'Aniello, M. and Landolfo, R. (2013), "Analytical and numerical study of plastic overstrength of shear links", J. Constr. Steel Res., 82, 19-32. https://doi.org/10.1016/j.jcsr.2012.11.013
  15. Dusicka, P., Itani, A.M. and Buckle, I.G. (2010), "Cyclic behavior of shear links of various grades of plate steel", J. Struct. Eng., ASCE, 136(4), 370-378. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000131
  16. ECCS (1991), European Recommendations for Steel Structures in Seismic Zones, European Convention for Constructional Steelwork, Technical Committee, TWG 1.3 - Seismic Design, No. 54.
  17. ECCS (1994), Manual on Design of Steel Structures in Seismic Zones, European Convention for Constructional Steelwork, Technical Committee, TC 13 - Seismic Design, No. 76.
  18. Elghazouli, A.Y. (2007), "Seismic design of steel structures to Eurocode 8", Struct. Eng., 85(12), 26-31.
  19. Elghazouli, A.Y. (2010), "Assessment of European seismic design procedures", Bull. Earthq. Eng., 8(1), 65-89. https://doi.org/10.1007/s10518-009-9125-6
  20. Engelhardt, M.D. and Popov, E.P. (1989a), "Behavior of long links in eccentrically braced frames", Earthquake Engineering Research Center, Report No. UCB/EERC-89/01, University of California, Berkeley.
  21. Engelhardt, M.D. and Popov, E.P. (1989b), "On design of eccentrically braced frames", Earthq. Spectra, 5(3), 495-511. https://doi.org/10.1193/1.1585537
  22. Eurocode 3 (2003), Design of steel structures - Part 1-1: General rules and rules for buildings, UNI prEN 1993.
  23. Eurocode 8 (2003), Design of structures for earthquake resistance, European Committee for Standardisation, prEN 1998-1-1/2/3.
  24. Eurocode 8 (2005), Design of structures for earthquake resistance, Part 3: Assessment and retrofitting of buildings, European Committee for Standardisation, EN 1998-3.
  25. FEMA 450 (2003), NEHRP recommended provisions for seismic regulations for new buildings and other structures, Building Seismic Safety Council- National Institute of Building Sciences, Washington, D.C.
  26. Fenwick, R.C, Davidson, B.J. and Chung, B.T. (1992), "P-delta actions in seismic resistant structures", Bull. NZ. Natl. Soc. Earthq. Eng., 25(1), 56-72.
  27. Foutch, D.A. (1989), "Seismic behaviour of eccentrically braced steel building", J. Struct. Eng., ASCE, 115(8), 1857-1876. https://doi.org/10.1061/(ASCE)0733-9445(1989)115:8(1857)
  28. Hjelmstad, K.D. and Popov, E.P. (1984), "Characteristics of eccentrically braced frames", J. Struct. Eng., ASCE, 110(2), 340-353. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:2(340)
  29. Humar, J., Mahgoub, M. and Ghorbanie-Asl, M. (2006), "Effect of second-order forces on seismic response", Can. J. Civ. Eng., 33(6), 692-706. https://doi.org/10.1139/l05-119
  30. Itani, A.M., Lanaud, C. and Dusicka, P. (2003), "Analytical evaluation of built-up shear links under large deformations", Comput. Struct., 81(8), 681-696. https://doi.org/10.1016/S0045-7949(03)00006-3
  31. Kasai, K. and Popov, E.P. (1986a), "General behavior of WF steel shear link beams", J. Struct. Eng., ASCE, 112(2), 362-382. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:2(362)
  32. Kasai, K. and Popov, E.P. (1986b), "Cyclic web buckling control for shear link beams", J. Struct. Eng., ASCE, 112(3), 505-521. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:3(505)
  33. Kasai, K. and Popov, E.P. (1986c), "A study of seismically resistant eccentrically braced steel frames systems", Report No. UCB/EERC-86/01, Earthquake Engineering Research Center, University of California, Berkeley.
  34. Kasai, K. and Han, X. (1997), "New EBF design method and application: redesign and analysis of US-Japan EBF", Proceedings of the International Workshop and Seminar on Behaviour of Steel Structures in Seismic Areas, Kyoto, Japan.
  35. Lu, L.W., Ricles, J.M. and Kasai K. (1997), "Global performance: general report", Proceedings of the International Workshop and Seminar on Behaviour of Steel Structures in Seismic Areas, Kyoto, Japan.
  36. MacRae, G.A. (1994), "P-$\Delta$ effects on single-degree-of-freedom structures in earthquakes", Earthq. Spectra, 10(3), 539-568. https://doi.org/10.1193/1.1585788
  37. Malley, J.O. and Popov, E.P. (1983), "Design consideration for shear links in eccentrically braced frames", Report No. UCB/EERC-83/24, Earthquake Engineering Research Center, University of California, Berkeley.
  38. Malley, J.O. and Popov, E.P. (1984), "Shear links in eccentrically braced frames", J. Struct. Eng., ASCE, 110(9), 2275-2295. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:9(2275)
  39. Marino, E.M., Nakashima, M. and Mosalam, K.M. (2005), "Comparison of European and Japanese seismic design of steel building structures", Eng. Struct., 27(6), 827-840. https://doi.org/10.1016/j.engstruct.2005.01.004
  40. Marino, E.M. (2014), "A unified approach for the design of high ductility steel frames with concentric braces in the framework of Eurocode 8", Earthq. Eng. Struct. Dyn., 43(1), 97-118. https://doi.org/10.1002/eqe.2334
  41. Mastandrea, L., Montuori, R. and Piluso, V. (2001), "Comparative analysis of different design procedures for seismic resistant EF-frames", Proceedings of the XVIII Congress CTA, Venice, Italy.
  42. Mazzolani, F.M., Della Corte, G. and D'Aniello, M. (2009a), "Experimental analysis of steel dissipative bracing systems for seismic upgrading", J. Civ. Eng. Manage., 15(1), 7-19. https://doi.org/10.3846/1392-3730.2009.15.7-19
  43. Mazzolani, F., Landolfo, R. and Della Corte, G. (2009b), "Eurocode 8 provisions for steel and steel-concrete Composite structures: comments, critiques, improvement proposals and research needs", Proccedings of the Eurocode 8 Perspectives from the Italian Standpoint Workshop, Naples, Italy.
  44. McDaniel, C., Uang, M.C. and Seible, F. (2003), "Cyclic testing of built-up steel shear links for the New Bay Bridge", J. Struct. Eng., ASCE, 129(6), 801-809. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:6(801)
  45. Okazaki, T., Engelhardt, M.D., Nakashima, M. and Suita, K. (2006a), "Experimental performance of link-tocolumn connections in eccentrically braced frames", J. Struct. Eng., ASCE, 132(8), 1201-1211. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:8(1201)
  46. Okazaki, T., Arce, G., Ryu, H.C. and Engelhardt, M.D. (2006b), "Experimental study of local buckling, overstrength and fracture of links in eccentrically braced frames", J. Struct. Eng., ASCE, 131(10), 1526-1535.
  47. Okazaki, T. and Engelhardt, M.D. (2007), "Cyclic loading behavior of EBF links constructed of ASTM A992 steel", J. Constr. Steel Res., 63(6), 751-765. https://doi.org/10.1016/j.jcsr.2006.08.004
  48. Okazaki, T., Engelhardt, M.D., Drolias, A., Schell, E., Honge, J.K. and Uang, C.M. (2009), "Experimental investigation of link-to-column connections in eccentrically braced frames", J. Constr. Steel Res., 65(7), 1401-1412. https://doi.org/10.1016/j.jcsr.2009.02.003
  49. Panchia, N.M.B. (1989), "Influence of P-delta effects on an inelastic single degree of freedom systems", Master of Engineering Report, Department of Civil Engineering, University of Auckland.
  50. Peres, R. and Castro, J.M. (2010), "Comparison of European and American approaches for consideration of P-Delta effects in seismic design", Proceedings of the 14th European Conference on Earthquake Engineering, Ohrid.
  51. Peres, R. (2010), "Comparison of European and American approaches for consideration of P-$\Delta$ effects in seismic design", MSc., Dissertation, ROSE School, Pavia, Italy.
  52. Perretti, A. (1999), "Comportamento sismico di telai in acciaio con controventi eccentrici", Ph.D., Dissertation, University of Naples, Italy. (in Italian)
  53. Popov, E.P., Ricles, J.M. and Kasai, K. (1992), "Methodology for optimum EBF link design", Proceedings of the 10th World Conference on Earthquake Engineering, Madrid, Spain.
  54. Ramadan, T. and Ghobarah, A. (1995), "Analytical model for shear-link behavior", J. Struct. Eng., 121(11), 1574-1580. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:11(1574)
  55. Richards, P. and Uang, C.M. (2002), "Evaluation of rotation capacity and overstrength of links in eccentrically braced frames", Report No. SSRP-2002/18, Structural Systems research Project, Department of Structural Engineering, University of California, San Diego.
  56. Richards, P.W. and Uang, C.M. (2005), "Effect of flange width-thickness ratio on eccentrically braced frames link cyclic rotation capacity", J. Struct. Eng., ASCE, 131(10), 1546-1552. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:10(1546)
  57. Ricles, J.M. and Popov, E.P. (1989), "Composite action in eccentrically braced steel frames", J. Struct. Eng., ASCE, 115(8), 2046-2066. https://doi.org/10.1061/(ASCE)0733-9445(1989)115:8(2046)
  58. Roeder, C.W. and Popov, E.P. (1978), "Eccentrically braced steel frames for earthquakes", J. Struct. Div., ASCE, 104(ST3), 391-412.
  59. Rossi, P.P. and Lombardo, A. (2007), "Influence of the link overstrength factor on the seismic behaviour of eccentrically braced frames", J. Constr. Steel Res., 63(11), 1529-1545. https://doi.org/10.1016/j.jcsr.2007.01.006
  60. Rossi, P.P. (2007), "A design procedure for tied braced frames", Earthq. Eng. Struct. Dyn., 36(14), 2227-2248. https://doi.org/10.1002/eqe.734
  61. Tremblay, R., Duval, C. and Leger, P. (1998), "Effects of viscous damping models, hysteretic models and ground motion characteristics on seismic P-Delta strength amplification factors", Stabil. Ductil. Steel Struct., Eds. T. Usami and Y. Itoh, Elsevier, Oxford, UK.
  62. Villani, A. (2009), "Critical assessment of seismic design procedures for steel MRF", MSc., Dissertation, ROSE School, Pavia, Italy.
  63. Whittaker, A.S., Uang, C.M. and Bertero, V.V. (1987), "Earthquake simulation tests and associated studies of a 0.3-scale model of a six-story eccentrically braced steel structure", Report No. UCB/EERC-87/02, Earthquake Engineering Research Center, University of California, Berkeley.
  64. Whittaker, A.S., Uang, C.M. and Bertero, V.V. (1988), "An experimental study of the behaviour of dual steel systems", Report No. UCB/EERC-88/14, Earthquake Engineering Research Center, University of California, Berkeley.
  65. Xie, Q. (2005), "State of the art of buckling-restrained braces in Asia", J. Constr. Steel Res., 61(6), 727-748. https://doi.org/10.1016/j.jcsr.2004.11.005
  66. Zona, A., Ragni, L. and Dall'Asta, A. (2012), "Sensitivity-based study of the influence of brace overstrength distributions on the seismic response of steel frames with BRBs", Eng. Struct., 37, 179-192. https://doi.org/10.1016/j.engstruct.2011.12.026

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