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Mathematical simulation of the stressed-deformed condition of reinforced concrete beams in simultaneous influence of aggressive environment and loading

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EN
Abstrakty
EN
In this paper, the method of determining the stress-strain state of reinforced concrete beams at the simultaneous action of the aggressive medium and the load on the basis of the discrete representation of the of concrete and reinforcement μ-δ beam structures using the diagrams with the help of a computer is considered. The proposed methodology allowed to simulate the work of reinforced concrete beams at all stages of loading, including destruction. At the same time, at each stage of loading, deformations and stresses in concrete and reinforcements are obtained along the entire height of the section and along the length of the beam. The method also allows to take into account the previous tension in the valve, which takes place in the manufacturing stage. In addition, it enables to simulate the formation and development of normal and inclined cracks, the beginning of the destruction of reinforced concrete beams, determine their bearing capacity and bends. Performed with the help of the proposed methodology, calculations of experimental models of reinforced concrete beams demonstrated a good coincidence of results.
Twórcy
autor
  • Lviv National Agrarian University
Bibliografia
  • 1. Blicharsky Z. Y. 2005. Stress-deformed state of reinforced concrete structures in the aggressive environment under the influence of load: Dissertation, Doctor of Technical Sciences: 05.23.01. Lviv, 348. ( in Ukrainian).
  • 2. Barashikov A. Y., Blicharsky Z. Y. 2003. Deformability of reinforced concrete structures damaged by corrosion, due to the time factor. Collection of science works: Building constructions. Kiev, NIISK. 59th Edition. 257-264. ( in Ukrainian).
  • 3. Blicharsky Z. Y., Khmel R., Vashkevich R. 2001. Strength and deformability of compressed concrete elements under the influence of aggressive environment. Collection of conference materials: Actual problems of construction and environmental engineering. 11-19. ( in Ukrainian).
  • 4. Blicharsky Z. Y., Khmel R., Vashchishin R. 2001. Influence of aggressive environment on concrete and reinforced concrete constructions. Journal of Lviv State Agrarian University: Architecture and agricultural construction. Vol. №2. 21-29. ( in Ukrainian).
  • 5. Klimenko F., Barabash V., Shmyh R., Fabrika Y., Burchenia S. 2005. Modeling of the formation and development of normal cracks in steel-concrete bending structures. Visnyk of Lviv State Agrarian University: Architecture and Agricultural Construction. Vol. №6. 84-91. ( in Ukrainian).
  • 6. Klimenko F., Shmyh R., Fabrika Y. 2007. Modeling of steel-concrete structures performance under load. Journal of Lviv State Agrarian University: Architecture and Agricultural Construction. - Lviv: LSAU, - № 8. –pp. 168-174. ( in Ukrainian).
  • 7. Klimenko F. Shevchuk S., Bilozir V. V., Shmyh R. A. 2007. Theoretical principles of stress-strain state of steel-reinforced concrete plates modeling, reinforced with external wavy sheets. Journal of the "Lviv Polytechnic" National University " - Theory and construction practice". Vol. № 602, 110-115. ( in Ukrainian).
  • 8. Rzhanitsyn Y. P. 1971. Corrosion of concrete and reinforced concrete structures in contact with NaCl. Collection of scientific works of the Perm Polytechnic Institute. Vol. №91. 124-130. ( in Ukrainian).
  • 9. Fabryka Y. M., Klymenko F. E., Shmyh R. A. 2007. Strength and deformability of steel reinforced concrete structures. 136. ( in Ukrainian).
  • 10. Shevchuk S. G., Bilozir V. V., Shmyh R. A. 2007. Bearing ability and deformability of steel concrete ceilings 117. ( in Ukrainian).
  • 11. Shmyh R. A. 1997. Strength and deformability of the complex steel concrete structures: Ph.D dissertation – Poltava. 221. ( in Ukrainian).
  • 12. Shmyh R. A., Nishchenko I. O., Famulyak Y. E., Kanyuk V. M. 2001. The application of the finite element method in the simulation of the work of reinforced concrete elements exposed to bending deformations, based on real deformation diagrams of materials. Collection of scientific works "Structures of civil buildings". 134-141. (in Ukrainian).
  • 13. Allan M. L. 1995. Probability of corrosion induced craking in reinforced concrete // Cement and concrete research. Vol. №6 1179-1190. (In English)
  • 14. Creazza G., Saetta A., Scotta R., Vitaliani R., Onate E. 1995. Mathematical simulation of structural damage in historical buildings. Architectural studies, materials and analysis. – Southamptom, Boston: Computational Mechanics Inc., – Vol.1. 111-118.
  • 15. Dagher H. J., S. Kulendran 1992. Finite element modeling of corrosion damage in concrete. ACI Structural Journal, Vol. № 6. 699-708.
  • 16. Hammann D. A. 1967. Steel Corrosion in Concrete. Materials Protection. Vol. №11. 19-23.
  • 17. Kholod P. F., Shmyh R. A. 2014. Simulation of the stress-strain state of concrete columns with pre-compress high-strength reinforcement. Journal of the National University "Lviv Polytechnic":"Theory and Practice of Construction". Vol. №781. 67-71. ( in Ukrainian).
  • 18. Suzuki K., Ohono Y., Prapartanatorn S., Tamura H. 1990. Mechanism of steel corrosion in cracked concrete. Proc. of 3rd SCI Int. Symposium on Corrosion of Reinforced Concrete, Elsevier Applied Science, London - New York. 12-28.
  • 19. Wall J. S., Shrive N. G. 1988. Factors affecting bond between new and old concrete. ACI Materials Journal. Vol. 2. 117-125.
  • 20. Weyers R. W., Liu T. 1998. Modeling the dynamic corrosion process in chloride contaminated concrete structures. Cement and concrete research. Vol. №3. 369-379.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-7056b7cc-33f8-4988-8f74-338397e3c05a
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