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http://dx.doi.org/10.12989/scs.2016.20.1.057

Distortional buckling of I-steel concrete composite beams in negative moment area  

Zhou, Wangbao (School of Civil Engineering and Architecture, Wuhan University of Technology)
Li, Shujin (School of Civil Engineering and Architecture, Wuhan University of Technology)
Huang, Zhi (School of Civil Engineering, Central South University)
Jiang, Lizhong (School of Civil Engineering, Central South University)
Publication Information
Steel and Composite Structures / v.20, no.1, 2016 , pp. 57-70 More about this Journal
Abstract
The predominant type of buckling that I-steel concrete composite beams experience in the negative moment area is distortional buckling. The key factors that affect distortional buckling are the torsional and lateral restraints by the bottom flange. This study thoroughly investigates the equivalent lateral and torsional restraint stiffnesses of the bottom flange of an I-steel concrete composite beam under negative moments. The results show a coupling effect between the applied forces and the lateral and torsional restraint stiffnesses of the bottom flange. A formula is proposed to calculate the critical buckling stress of the I-steel concrete composite beams under negative moments by considering the lateral and torsional restraint stiffnesses of the bottom flange. The proposed method is shown to better predict the critical bending moment of the I-steel composite beams. This article introduces an improved method to calculate the elastic foundation beams, which takes into account the lateral and torsional restraint stiffnesses of the bottom flange and considers the coupling effect between them. The results show a close match in results from the calculation method proposed in this paper and the ANSYS finite element method, which validates the proposed calculation method. The proposed calculation method provides a theoretical basis for further research on distortional buckling and the ultimate resistance of I-steel concrete composite beams under a variable axial force.
Keywords
steel concrete composite beams; distortional buckling; rotational restraint stiffness; lateral restraint stiffness; elastic foundation beam method;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 Atanackovic, T.M. and Ardeshir, G. (2012), Theory of Elasticity for Scientists and Engineers, Springer-Verlag New York Inc., New York, NY, USA.
2 Bi, C. and Ginting, V. (2011), "Two-grid discontinuous Galerkin method for quasi-linear elliptic problems", J. Sci. Comput., 49(3), 311-331.   DOI
3 Bradford, M.A. (1988), "Buckling of elastically restrained beams with web distortions", Thin-Wall. Struct., 6(4), 287-304.   DOI
4 Bradford, M.A. (1992), "Lateral-Distortional buckling of steel I - Section members", J. Constr. Steel. Res., 23(1-3), 97-116.   DOI
5 Bradford, M.A. (1998), "Distortional buckling of elastically restrained cantilevers", J. Constr. Steel. Res., 47(1-2), 3-18.   DOI
6 Bradford, M.A. (2000), "Strength of compact steel beams with partial restraint", J. Constr. Steel. Res., 53(2), 183-200.   DOI
7 Bradford, M.A. and Gao, Z. (1992), "Distortional buckling solutions for continuous composite beams", J. Struct. Eng., 118(1), 73-89.   DOI
8 Bradford, M.A. and Johnson, R.P. (1987), "Inelastic buckling of composite bridge girders near internal supports", Proceedings of the ICE-Structures and Buildings, 83(1), 143-159.
9 Bradford, M.A. and Kemp, A.R. (2000), "Buckling in continuous composite beams", Progress Struct. Eng. Mater., 2(2), 169-178.   DOI
10 British Standards Institution (1982), Code of Practice for Design of Steel Bridge, BS5400: Part 3, London, UK.
11 Champenoy, D., Corfdir, A. and Corfdir, P. (2014), "Calculating the critical buckling force in compressed bottom flanges of steel-concrete composite bridges", Eur. J. Environ. Civil En., 18(3), 271-292.   DOI
12 Chen, W. and Ye, J. (2010), "Elastic lateral and restrained distortional buckling of doubly symmetric I - beams", Int.J. Struct. Stab. Dy., 10(5), 983-1016.   DOI
13 Dekker, N.W., Kemp, A.R. and Trinchero, P. (1995), "Factors influencing the strength of continuous composite beams in negative bending", J. Constr. Steel Res., 34(2-3), 161-185.   DOI
14 Fu, Y., Wang, J. and Hu, S. (2013), "Analytical solutions of thermal buckling and postbuckling of symmetric laminated composite beams with various boundary conditions", Acta. Mech., 225(1), 13-29.   DOI
15 Goltermann, P. and Svensson, S. (1988), "Lateral distortional buckling: Predicting elastic critical stress", J. Struct. Eng., 114(7), 1606-1625.   DOI
16 Jiang, L., Qi, J., Scanlon, A. and Sun, L. (2013), "Distortional and local buckling of steel-concrete composite box-beam", Steel Compos. Struct., Int. J., 14(3), 243-265.   DOI
17 Johnson, P.R. and Fan, C.K.R. (1991), "Distortional lateral buckling of continuous composite beams", Proceedings of the ICE-Structures and Buildings, 91(1), 131-161.
18 Johnson, R.P. and Bradford, M.A. (1983), "Distortional lateral buckling of unstiffened composite bridge girders", International Conference on Stability and Plastic Collapse of Steel Structures, Granada, Spain, February.
19 Johnson, R.P. and Chen, S. (1993a), "Stability of continuous composite plate girders with U-frame action", Proceedings of the ICE-Structures and Buildings, 99(2), 187-197.   DOI
20 Johnson, R.P. and Chen, S. (1993b), "Strength and stiffness of discrete U-frames in composite plate girders", Proceedings of the ICE-Structures and Buildings, 99(2), 199-209.   DOI
21 Kalkan, I. and Buyukkaragoz, A. (2012), "A numerical and analytical study on distortional buckling of doubly-symmetric steel I-beams", J.Construct. Steel Res., 70, 289-297.   DOI
22 Lawson, M.R. and Rackham, W.J. (1989), Design of Haunched Composit e Beams in Buildings, Steel Construction Institution, Ascot.
23 Li, J., Huo, Q., Li, X., Kong, X. and Wu, W. (2014), "Dynamic stiffness analysis of steel-concrete composite beams", Steel Compos. Struct., Int. J., 16(6), 577-593.   DOI
24 Ronagh, H.R. (2001), "Progress in the methods of analysis of restricted distortional buckling of composite bridge girders", Progress in Structural Engineering and Materials, 3(2), 141-148.   DOI
25 Svensson, S.E. (1985), "Lateral buckling of beams analysed as elastically supported columns subject to a varying axial force", J. Construct. Steel Res., 5(3), 179-193.   DOI
26 Weston, G., Nethercot, D.A. and Crisfield, M.A. (1991), "Lateral buckling in continuous composite bridge girders", The Struct. Eng., 69(5), 79-87.
27 Tinh, Q.B. and Minh, N.N. (2013), "Meshfree Galerkin Kriging model for bending and buckling analysis of simply supported laminated composite plates", Int. J. Compos. Meth.-Sing., 10(3), 1350011.   DOI
28 Vrcelj, Z. and Bradford, M.A. (2009), "Inelastic restrained distortional buckling of continuous composite T-beams", J. Construct. Steel Res., 65(4), 850-859.   DOI
29 Wang, D. and Peng, H. (2013), "A Hermite reproducing kernel Galerkin meshfree approach for buckling analysis of thin plates", Comput. Mech., 51(6), 1013-1029.   DOI
30 Williams, F.W. and Jemah, A.K. (1987), "Buckling curves for elastically supported columns with varying axial force, to predict lateral buckling of beams", J. Construct. Steel Res., 7(2), 133-147.   DOI
31 Ye, J. and Chen, W. (2013), "Elastic restrained distortional buckling of steel-concrete composite beams based on elastically supported column method", Int. J. Struct. Stab. Dy., 13(1), 1-29.   DOI
32 Zhou, W., Jiang, L. and Yu, Z. (2012), "The distortional buckling calculation formula of the steel-concrete composite beams in the negative moment region", Chinese J. Computat. Mech., 29(3), 446-450.
33 Zhou, W., Jiang, L., Kang, J. and Bao, M. (2014), "Distortional buckling analysis of steel-concrete composite girders in negative moment area", Math. Probl. Eng., 2014(1), 1-10.