DOI: 10.5937/jaes12-5818
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions.
Volume 12 article 291 pages: 179 - 186
In steel structures,
the I-beams are in many cases exposed to combination of bending moment and bimoment
actions. In the elastic stage of work, material strength check is based on
maximum normal stresses, which for symmetric I-beams are the sum of moment and
bimoment stresses. The maximum stresses are compared with calculated
resistance. In both European codes and Russian standards for design of steel
structures, calculation of members is performed considering the conditions in
which the plastic deformations over the section are allowed. With the
development of plastic strains, bearing capacity of section is higher than in
the elastic stage. The existing normative documents for the design of steel
structures in Russia do not include design coeficient taking into account
development of plastic deformations in warping torsion. The article examines
combined action of bending moment and bimoment on I-beam proiles throughout the
theoretical and numerical solu- tions. Recommendations for checking their
bearing capacity in accordance to Russian standards are given, taking into
account development plastic deformations.
Aalberg, A., (1995) An experimental study of beam-columns subjected to combined torsion, bending, and axial actions, Dr.ing. thesis, Trondheim: Department of Civil Engineering, Norwegian institute of Technology.
Airumyan, E.I., (2008) Osobennosti rascheta konstruktsiy iz tonkostennykh gnutykh profley, Montazhnye i spetsial’nye raboty v stroitel’stve, (3), 2-7.
Boulton, N.S., (1962) Plastic twisting and bending of an I-section in which warp is restricted, Int. J. Mech. Sci., 4, 491-502.
Bychkov, D.V., (1962) Stroitel’naya mekhanika sterzhnevykh tonkostennykh konstruktsiy [Structural mechanics of bar thin-walled systems], Moscow: Gosstroyizdat Publ., 475.
Code of rules (2011) SP 16.13330.2011 Steel structures, Updated version SNIP II-23-81*, Moscow: Ministry of Regional Development of the Russian Federation, 1.72.
Dinno, K.S., and Gill, S.S., (1964) The plastic torsion of I-sections with warping restraint, Int. J. Mech. Sci., 6, 27-43.
Dinno, K.S., and Merchant, W., (1965) A procedure for calculating the plastic collapse of I-sections under bending and torsion, The Struct. Engr., 43(7.), 219-221.
Farwell Jr., C.R., Galambos, T.L., (1969) Nonuniform torsion of steel beams in elastic range, J. Struct. Div., 95(12), 2813-2829.
Heinisuo, M., Kukkonen, J., (2006) Resistance of cold-formed steel members by new eurostandard, Structural mechanics, 39(2 ), 3-21.
Lalin, V.V., Rybakov, V.A., Morozov, S.A., (2012) The finite Elements Research for Calculation of Thin-Walled Bar Systems, Magazine of Civil Engineering, (1), 53-73.
Nazmeeva, T.L., (2013) Bearing capacity of compressed continuous and perforated thin-walled steel members of C-shaped cold-formed profiles, Magazine of Civil Engineering, (5), 44-51.
Pi, Y.I., and Trahair, N.S., (1995) Inelastic torsion of steel I-beams, Journal of Structural Engineering, 121(4), 609-620.
Rybakov,V.A., Gamayunova, O.S., (2013) The stress-strain state of frame constructions’ elements from thin-walled cores, Internet Journal „Construction of Unique Buildings and Structures“, 7(12), 79-123.
Timoshenko, S.P., Gere, J.M., (1961) Theory of elastic stability, New York: McGraw-Hill, 541.
Trahair, N.S., (2005) Non-linear elastic non-uniform torsion, Journal of Structural Engineering, 131(7), 1135-1142.
Trahair, N.S., (1999) Plastic torsion analysis of monosymmetric and point-symmetric beams, Journal of Structural Engineering, 125(2), 175-182.
Tusnin, A.R., Prokic M., (2014) Resistance of I-beams in warping torsion with account for the development of plastic deformations, Vestni, MGS2 [Proceedings of Moscow State University of Civil Engineering], (1), 75-82.
Vatin, N.I., Nazmeeva, T.V., Guslinscky, R., (2014) Problems of cold-bent notched c-shaped profile members, Advanced Materials Research, Vols. 941-944, 1871-1875.
Vatin, N.I., Havula, J., Marti,ainen, L., Sinelnikov, A., Orlova, A., Salamakhin, S., (2014) Thin-walled cross-sections and their joints: tests and FEM-modelling, Advanced Materials Research, Vols. 945-949, 1211-1215.
Vlasov, V.Z. (1959) Tonkostennye uprugie sterzhni [Thin-walled Elastic Beams], Moskcow: Fizmatgiz Publ, 568.
Wagner, H., (1936) Verdrehung und Knickung von offenen Profilen, NACA Tech. Memo. No. 870, Washington D.C.