Rational Dimensions of Transverse Stiffenning Ribs in Girders with a Slender Web

Abstract:

In thin-walled structures, to which girders with slender web (GSW) are related, one of the weak links is their local stability. Girders with slender web are still buckling in elastic stage of loading under shear deformation. Increasing of their stability is possible to reach with installation of Analysis carried out in the work show that demands to appointment of optimum sizes of transverse stiffening ribs in Russian structural standard differ essentially from those of the foreign standards. The goal of the work is to find out the demands by which the standards are more well grounded and bring in suggestion on improving the Russian structural rules. The determined goal has been reached with GSW panels calculations FEM using the program complex ANSYS. The critical loads were determined in the shear of rectangular plates supported by transverse stiffening ribs of different sizes. The results of the FEM were compared with the calculations performed on the empirical dependencies of different standards. The result of the research was to make recommendations on the rational dimensions of the stiffening ribs, determined from the ratio of flexural stiffnesses of the reinforced plate and rib. It is noted that the presence of stiffening ribs can increase the stability of the beam wall by 15-30%. The results of the research can be used in design organisations.

• Periodical: Materials Science Forum (Volume 931)
• Pages: 100-106
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.931.100
• Online since: September 2018
• Authors: Alexej I. Pritykin*, Ilja E. Kirillov
• Keywords: Critical Loads, Finite Element Method (FEM), Girders with Slender Web, Shear Buckling, Transverse Stiffening Ribs

References

[1] AASHTO LRFD Bridge Design Specification. Fifth Edition, (2010).

[2] BS 5950-1 Code of practice for design. Rolled and welded sections. British Standard Institution. (2000).

[3] EN 1993-1-5. Eurocodes 3. Design of steel structures. Part 1.5: Plated structural elements. Brussells: European Committee for Standardisation, (2006).

[4] SR 16.13330.2017 «Building Code II-23-81*. Steel Constructions», Мoscow, (2017).

[5] A.I. Pritykin, I.E. Kirillov, Critical rigidity of stiffener for increasing shear stability of rectangular plate, Mechanics. 21(3) (2015) 174−179.

DOI: 10.5755/j01.mech.21.3.9045

[6] Pritykin А.I., Kirillov I.Е. Influence of location and parameters of stiffening ribs on stability of square plate under shear, MGSU Proceedings. 12 (2014) 77-87. (in Russian).

DOI: 10.22227/1997-0935.2014.12.77-87

[7] Zoltan Virag, Optimum design of stiffened plates for different load and shapes of ribs, J. of Computational and Applied Mechanics. 5(1) (2004) 165-179.

[8] M.M. Alinia, A study into optimisation of stiffening ribs in plates subjected to shear loading, Thin-walled Structures. 43 (2005) 845-860.

DOI: 10.1016/j.tws.2004.10.008

[9] N.L. Velikanov, S.I. Koryagin, O.V. Sharkov, Definition of Locked-up Stresses Around a Rectilinear Welding Seam, IOP Conference Series: Materials Science and Engineering.124 (2016) 012094.

DOI: 10.1088/1757-899x/124/1/012094

[10] R. Chacón, E. Mirambell, E. Real, Transversally stiffened plate girders subjected to patch loading. Part 1. Preliminary study, J. of Constructional Steel Research. 80 (2013) 483-491.

DOI: 10.1016/j.jcsr.2012.06.008

[11] F. Presta, C.R. Hendy, E.Turco, Numerical validation of simplified theories for design rules of transversely stiffened plate girders, The Structural Engineer. 86(21) (2008) 37-46.

[12] D.W. White, V.G. Barker, Shear resistance of transversely stiffened steel I-girders. ASCE J. Struct. Eng. 134(9) (2008) 1425-1436.

DOI: 10.1061/(asce)0733-9445(2008)134:9(1425)