Theoretical and Experimental Research of The Stability of The Eccentrically Loaded Steel Columns with Variable Cross–Section

  • Authors

    • Gennady Trusov
    • Vladimir Ruban
    2018-06-20
    https://doi.org/10.14419/ijet.v7i3.2.14571
  • beam-column, eccentrically loaded elements, stability, steel columns, variable cross-section.
  • The article deals with the problem of determining the ultimate load for the eccentrically loaded steel columns with variable-cross section.

    The purpose of the research work is to offer an evaluation technique and practical calculation of load-bearing ability of the beam-columns with variable cross-section on the basis of numerical research, which will allow to consider the true form of element deflection curve, the effect of cross-section form, physical nonlinearity of the material, and variety of element boundary conditions. The distinctive characteristic of the suggested method is usage of the discrete models for cross-sectional parts, for the true stress-strain curves of the materials, and for the other input data. The method was tested and the results were compared to known theoretical solutions and national standards. To establish the reliability of the developed method, the experimental study of steel columns with variable cross-section was conducted. The suggested method allows to obtain column curves tables of lowering coefficients for these elements, that can be used in practice of civil engineering, and are convenient with national standards and Eurocode.

     

  • References

    1. [1] Belskiy GE, “The basics of the unification of inelastic calculation of steel structures†[Osnovy unifikacii raschetov metallicheskih konstrukciy za predelom uprugosti], Construction Mechanics and the calculation of structures, No. 3, (1985), pp. 12–15. [in Russian]

      [2] Belskiy GE, “Stability of compressed metal rods†[Ustoichivost szhatyh sterzhney], Izvestiya VUZov, No. 11, (1985), pp. 11–24. [in Russian]

      [3] Bilyk SI, “Rational steel I-beams with variable height of the web†[Ratsionalni stalevi dvotavrovi balki zi zminnou vysotou stinki], Resourse econmical materials, structures, and buildings: scientific works compilation, Vol. 17, (2008), Ministry of Education and Science of Ukraine, NUVGP, Rivne, pp. 73–78. [in Ukrainian]

      [4] DBN B.2.6-198:2015, Steel Structures, Design Standards [ДБРВ.2.6-198:2014. Сталеві конÑтрукції. Ðорми проектуваннÑ]. [in Ukrainian]

      [5] ЕN 1993–1–1:2005 Eurocode 3: Design of steel structures — Part 1–1: General rules and rules for buildings.

      [6] Galambos TV, Surovek AE, Structural Stability of Steel: Concepts and Applications for Structural Engineers, John Wiley & Sons Ltd., (2008), 381 p.

      [7] Ježek K, Die Festigkeit von Druckstäben aus Stahl, (1937), Verlag von Julius Springer, Wien, 252 s. [in German]

      [8] Katushin VV, Building with steel framework elements with variable cross-section (calculation, desgin, building) [Zdaniya s karkasami iz stalnyh ram peremennogo secheniya (raschet, proektirovanie, stroitelstvo)], Stroyizdat, (2005), Moscow, 656 p. [in Russian]

      [9] Kolomiets VP, The method of determination of stresses and deformations in the cross-section of the beam under complex loading, taking into account real stres-strain diagram (σ-ε) [Metod opredeleniya napriazheniy i deformatsiy v sechenii balki pri slozhnom nagruzhenii s uchetom deistvitelnoi diagrammy (σ-ε)], Izvestiya VUZov, Aviation production, No. 1, (1966), pp. 63–72. [in Russian]

      [10] Santathadaporu S, Chen WF, Tangent Stiffness Method for Biaxial bending, Proc. ASCE, J. Structural Div., (1972), Vol. 98, No. 1, pp. 153–163.

  • Downloads

  • How to Cite

    Trusov, G., & Ruban, V. (2018). Theoretical and Experimental Research of The Stability of The Eccentrically Loaded Steel Columns with Variable Cross–Section. International Journal of Engineering & Technology, 7(3.2), 458-462. https://doi.org/10.14419/ijet.v7i3.2.14571