Comparative Analysis of Deflections and Crack Opening Widths in Reinforced Concrete Whole Beams Under the Action of Single, Low-Cycle Repetitive and Low-Cycle Alternating Loads

  • Authors

    • Grigory Masjuk
    • Oleksandr Yushchuk
    • Wladislav Masjuk
    • Pavlo Semko
    2018-10-13
    https://doi.org/10.14419/ijet.v7i4.8.27215
  • reinforced concrete whole beams, short-cyclic repetitive and alternating loads, deflections, crack opening widths.

  • Abstract

    Article contains a comparative analysis of the deflections and the crack opening widths in the reinforced concrete whole beams affected by single, low-cycle repeated and short-cycle alternating loads according to experimental data. Experimental studies have shown that the stress-strained state of the whole beams affected by low-cycle repeated and short-cycle alternating loads significantly differs from the stress-strained state of the same beams affected by nonalternating static loads.

    Following parameters of the stress-strained state were determined: crack resistance and deformability, crack opening widths and deflections have considerably higher values. This is caused to certain extent by the change in the concrete structure after repeated and alternating loads. The concrete structure, affected by alternating loads, changes due to the formation of microcracks, which increase from cycle to cycle, forming the main cross-cutting cracks, dividing the beam by length into separate blocks. Due to this, the beam stiffness decreases and the deflections increase, as well as the crack opening widths.

     


     

  • References

    1. [1] Kirilov S.М., Yu.P.Guscha, M.S. Abakanov (1979) Redistribution of forces in statically indeterminate reinforced concrete structures reinforced with steel without plumbing Strength, rigidity and crack resistance of reinforced concrete structures. M. NIIZhBK, pp. 171-186.

      [2] Dorofeev V. S., M. Karpyuk, E. N. Kratovska (2010) Strength, fracture toughness and deformability of continuous reinforced concrete beams, Even, Odessa p. 175

      [3] Dorofeev V.S., V.M. Karpyuk, E.N. Krotovskaya, A.M. Brednev (2010) Deformability of Materials of Non-Reinforced Reinforced Concrete Beams Bulletin of the ODABA, Voln. 38. Odessa pp. 246-254.

      [4] Dorofeev V.S., V.M. Karpyuk, E.N. Krantovskaya (2010) Calculation of deflections of non-broken reinforced concrete beams Resource-saving materials, constructions, buildings or structures Vol. 20 Rivne, NUVGP p p. 193-204.

      [5] Shkury O.A., , O.M. Lazareva (2011) Calculation of the durability of statically uncertain reinforced concrete structures Resource-saving materials, constructions, buildings and structures: Vol. 22 Rivne, NUVGP pp. 518-528.

      [6] Babich V.E. (1999_ Stress-deformed state of non-split beams, taking into account the complete diagram of concrete deformation Scientific Bulletin of Construction. Vol. 7 Kharkiv: KhTUBA, pp.107-107.

      [7] Masyuk G.Kh., V.E. Babich (2002) Experimental researches of redistribution of efforts in two transverse non-permeable reinforced concrete beams at repeated loads Bulletin of the Ukrainian State University of Water Management and Nature Management: Sb. sciences Ave - Rivne, UDUVGP, Vol. 4 (17). – pp. 165-173.

      [8] Savitsky V.V. (2003) Experimental studies of deflections and width of crack opening in prefabricated monolithic non-split beams under the action of repeated loads Resource-saving materials, constructions, buildings and structures: Sb. sciences Ave - Rivne, UDUVGP, Vol. 9, pp. 303-310.

      [9] Dorofeev V.S., V.M. Karpyuk, E.N. Krantevsky (2010) Strength, fracture toughness and deformability of non-broken reinforced concrete beams Even, Odessa p. 175

      [10] Dorofeev V.S., V.M. Karpyuk, O.M. Krantevskaya (2007) Fracture resistance of non-cut beams The theory and practice of construction: Bulletin of the National Academy of Sciences of Ukraine. Univ-that "Lviv Polytechnic", Vol. 600 - Lviv, pp. 92-100.

      [11] Kochkarev, D., & Galinska, T. (2017). Calculation methodology of reinforced concrete elements based on calculated resistance of reinforced concrete. Paper presented at the MATEC Web of Conferences, , 116 https://doi.org/10.1051/matecconf/201711602020

      [12] Piskunov, V. G., Goryk, A. V., & Cherednikov, V. N. (2000). Modeling of transverse shears of piecewise homogeneous composite bars using an iterative process with account of tangential loads. 1. construction of a model.Mechanics of Composite Materials, 36(4), 287-296. https://doi.org/10.1007/BF02262807

      [13] Leshchenko M. V., Semko V. O. Thermal characteristics of the external walling made of cold-formed steel studs and polystyrene concrete. Magazine of Civil Engineering. № 8, (2015), pp. 44–55. https://doi.org/10.5862/MCE.60.6

      [14] Semko O., Yurin O., Avramenko Yu., Skliarenko S. Thermophysical aspects of cold roof spaces. MATEC Web of Conferences. Vol. 116, (2017), р. 02030. https://doi.org/10.1051/matecconf/201711602030

      [15] Yurin O., Galinska T. Study of heat shielding qualities of brick wall angle with additional insulation located on the outside fences. MATEC Web of Conferences. Vol. 116, (2017), р. 02039. https://doi.org/10.1051/matecconf/201711602039

      [16] Babich, V. I., & Kochkarev, D. V. (2004). Calculation of elements of reinforced-concrete by deformation method. Beton i Zhelezobeton, (2), 12-17.

  • Downloads

  • How to Cite

    Masjuk, G., Yushchuk, O., Masjuk, W., & Semko, P. (2018). Comparative Analysis of Deflections and Crack Opening Widths in Reinforced Concrete Whole Beams Under the Action of Single, Low-Cycle Repetitive and Low-Cycle Alternating Loads. International Journal of Engineering & Technology, 7(4.8), 65-68. https://doi.org/10.14419/ijet.v7i4.8.27215

    Received date: 2019-02-11

    Accepted date: 2019-02-11

    Published date: 2018-10-13