Steel and Composite Structures

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Predicting the stiffness of shear diaphragm panels composed of bridge metal deck forms

  • Egilmez, Oguz O. (Department of Civil Engineering, Izmir University of Economics)
  • Received : 2016.09.09
  • Accepted : 2017.03.21
  • Published : 2017.06.10
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Abstract

The behavior of building industry metal sheeting under shear forces has been extensively studied and equations have been developed to predict its shear stiffness. Building design engineers can make use of these equations to design a metal deck form bracing system. Bridge metal deck forms differ from building industry forms by both shape and connection detail. These two factors have implications for using these equations to predict the shear stiffness of deck form systems used in the bridge industry. The conventional eccentric connection of bridge metal deck forms reduces their shear stiffness dramatically. However, recent studies have shown that a simple modification to the connection detail can significantly increase the shear stiffness of bridge metal deck form panels. To the best of the author's knowledge currently there is not a design aid that can be used by bridge engineers to estimate the stiffness of bridge metal deck forms. Therefore, bridge engineers rely on previous test results to predict the stiffness of bridge metal deck forms in bracing applications. In an effort to provide a design aid for bridge design engineers to rely on bridge metal deck forms as a bracing source during construction, cantilever shear frame test results of bridge metal deck forms with and without edge stiffened panels have been compared with the SDI Diaphragm Design Manual and ECCS Diaphragm Stressed Skin Design Manual stiffness expressions used for building industry deck forms. The bridge metal deck form systems utilized in the tests consisted of sheets with thicknesses of 0.75 mm to 1.90 mm, heights of 50 mm to 75 mm and lengths of up to 2.7 m; which are representative of bridge metal deck forms frequently employed in steel bridge constructions. The results indicate that expressions provided in these manuals to predict the shear stiffness of building metal deck form panels can be used to estimate the shear stiffness of bridge metal deck form bracing systems with certain limitations. The SDI Diaphragm Design Manual expressions result in reasonable estimates for sheet thicknesses of 0.75 mm, 0.91 mm, and 1.21 mm and underestimate the shear stiffness of 1.52 and 1.90 mm thick bridge metal deck forms. Whereas, the ECCS Diaphragm Stressed Skin Design Manual expressions significantly underestimate the shear stiffness of bridge metal deck form systems for above mentioned deck thicknesses.

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References

  1. AISC 360 (2010), Specification for structural steel buildings; American Institute of Steel Construction, Chicago, IL, USA.
  2. Alenius, M. (2002), "Finite element modeling of composite bridge stability", M.Sc. Thesis; KTH Royal Institute of Technology, Stockholm, Sweden.
  3. AASHTO (1994), Load and Resistance Factor Design (LRFD) Bridge Design Specifications; (1st Ed.), American Association of State Highway and Transportation Officials, Washington, D.C., USA.
  4. AASHTO (2014), Load and Resistance Factor Design (LRFD) Bridge Design Specifications; (7th Ed.), American Association of State Highway and Transportation Officials, Washington, D.C., USA.
  5. Bryan, E.R. (1973), The Stressed Skin Design of Steel Buildings, CONSTRADO Monograph, Crosby Lockwood Staples.
  6. CANAM (2006), Steel Deck Diaphragm Catalogue; Boucherville, Canada.
  7. Cao, P., Lu, Y.F. and Wu, K. (2013), "Experimental research on sagging bending resistance of steel sheeting-styrofoam-concrete composite sandwich slabs", Steel Compos. Struct., Int. J., 15(4), 425-438. https://doi.org/10.12989/scs.2013.15.4.425
  8. Cao, P., Feng, N. and Wu, K. (2014), "Experimental study on infilled frames strengthened by profiled steel sheet bracing", Steel Compos. Struct., Int. J., 17(6), 777-790. https://doi.org/10.12989/scs.2014.17.6.777
  9. Currah, R.M. (1993), "Shear strength and shear stiffness of permanent steel bridge deck forms", M.S. Thesis; The University of Texas at Austin, Austin, TX, USA.
  10. Davies, J.M. (1976), "Calculation of steel diaphragm behavior", J. Struct. Div., 102(ST7), 1411-1430.
  11. Davies, J.M. and Bryan, E.R. (1982), Manual of Stressed Skin Diaphragm Design, JW&S, NY, USA.
  12. ECCS (1995), European Recommendations for the Application of Metal Sheeting acting as a Diaphragm-Stressed Skin Design; No. 88.
  13. Egilmez, O., Helwig, T., Jetann, C. and Lowery, R. (2007), "Stiffness and strength of metal bridge deck forms", J. Bridge Eng., 12(4), 429-437. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:4(429)
  14. Egilmez, O., Helwig, T. and Herman, R. (2012), "Buckling behavior of steel bridge I-girders braced by permanent metal deck forms", J. Bridge Eng., 17(4), 624-633. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000276
  15. Egilmez, O., Helwig, T. and Herman, R. (2016a), "Using metal deck forms for construction bracing in steel bridges", J. Bridge Eng., 21(5), 04015085. DOI: 10.1061/(ASCE)BE.1943-5592.0000864
  16. Egilmez, O., Vardaroglu, M. and Akbaba, A. (2016b), "Strength requirements for shear diaphragms used for stability bracing of steel beams", J. Struct. Eng., 04016214. DOI: 10.1061/(ASCE)ST.1943-541X.0001706
  17. Errera, S. and Apparao, T. (1976), "Design of I-shaped beams with diaphragm bracing", J. Struct. Div., 102(4), 769-781.
  18. Galanes, O.R. and Godoy, L.A. (2014), "Modeling of windinduced fatigue of cold-formed steel sheet panels", Struct. Eng. Mech., Int. J., 49(2), 237-259. https://doi.org/10.12989/sem.2014.49.2.237
  19. Helwig, T.A. and Frank, K.H. (1999), "Stiffness requirements for diaphragm bracing of beams", J. Struct. Eng., 125(11), 1249-1256. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:11(1249)
  20. Helwig, T.A. and Yura, J.A. (2008a), "Shear diaphragm bracing of beams. I: Stiffness requirements", J. Struct. Eng., 134(3), 348-356. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:3(348)
  21. Helwig, T.A. and Yura, J.A. (2008b), "Shear diaphragm bracing of beams. II: Design requirements", J. Struct. Eng., 134(3), 357-363. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:3(357)
  22. Luttrell, L.D. (1981), Steel Deck Institute Diaphragm Design Manual, (1st Ed.), MO, USA.
  23. Luttrell, L.D. (2004), Steel Deck Institute Diaphragm Design Manual, (3rd Ed.), Canton, OH, USA.
  24. Massarelli, R., Franquet, J.E., Shrestha, K., Tremblay, R. and Rogers, C.A. (2012), "Seismic testing and retrofit of steel deck roof diaphragms for building structures", Thin-Wall. Struct., 61, 239-247. https://doi.org/10.1016/j.tws.2012.05.013
  25. Seres, N. and Dunai, L. (2011), "Experimental and numerical studies on concrete encased embossments of steel strips under shear action for composite slabs with profiled steel decking", Steel Compos. Struct., Int. J., 11(1), 39-58.
  26. Winter, G. (1960), "Lateral bracing of columns and beams", Trans. Am. Soc. Civ. Eng., 125(1), 807-826.
  27. Ziemian, R.D. (Ed.) (2010), Guide to Stability Design Criteria for Metal Structures, (6th Ed.), JW & S, USA.