Differences in structure and properties of the metal of the beam of bridge construction

Keywords

steel, beam, bridge structures, mechanical properties, impact toughness.

Cite as

Krechkovska H. V., Voitovich А. А., Dzyubyk А. R., Kindratskyi B. І., Lampitskyi О. S., and Bohun L. I. Differences in structure and properties of the metal of the beam of bridge construction. Physico­chemical Mechanics of Materials. 2023. 59(6), 072-077.

https://doi.org/10.15407/pcmm2023.06.072

 

Abstract

Mechanical properties of the 15KhSND steel of the beam of the bridge structure were analyzed. It was established that the characteristics of strength and plasticity, as well as the resistance to brittle fracture of the steel of its wall correspond to the regulated values. The values of strength and plasticity of the steel shelf do not exceed the normalized limits, but the low values of its impact strength and brittle cleavages on the macrofractures of the samples indicate a tendency to brittle failure. It was found that the resistance to brittle fracture of the metal from the beam shelf decreased in three times on the longitudinal samples, and in two times on the transverse ones to compare to the inherent brittle fracture resistance of steel from the beam wall.

References

1. A. R. Dziubyk, A. A. Voitovych, O. Z. Student, L. V. Dziubyk, and I. B. Khomych, “Evaluation of the technical state of reinforcement of the concrete-beam span of a bridge constructed at the end of the last century,” Mater. Sci., 57, No. 4. 466-474 (2022). https://doi.org/10.1007/s11003-022-00567-0
2. O. Nemchuk, M. Hredil, V. Pustovoy, and O. Nesterov, “Role of in-service conditions in operational degradation of mechanical properties of portal cranes steel,” Proc. Struct. Int., 16, 245-251 (2012). https://doi.org/10.1016/j.prostr.2019.07.048
3. H. M. Nykyforchyn, O. T. Tsyrul’nyk, D. Yu. Petryna, and M. I. Hredil’, “Degradation of steel used in gas main pipelines during their 40-year operation,” Strength Mater., 41, No. 5. 501-505 (2009). https://doi.org/10.1007/s11223-009-9158-8
4. L. K. Polishchuk, H. V. Kharchenko, and О. І. Zvirko, “Corrosion-fatigue crack-growth resistance of steel of the boom of a clamp-forming machine,” Mater. Sci., 51, No. 2. 229-234 (2015). https://doi.org/10.1007/s11003-015-9834-8
5. H. Nykyforchyn, V. Pustovyi, O. Zvirko, P. Semenov, M. Hredil, O. Nemchuk, O. Oliynyk, and O. Tsyrulnyk, “Analysis of operational factors affecting the serviceability of seaport hoisting and transporting equipment,” Proc. Struct. Int., 41, Is. C, 326-332 (2022). https://doi.org/10.1016/j.prostr.2022.05.038
6. M. I. Gredil, “Operating degradation of gas-main pipeline steels,” Metallofiz. Noveishie Tekhnol., 30, Spec. Is., 397-406 (2008).
7. O. O. Nemchuk, and H. V. Krechkovska, “Fractographic substantiation of the loss of resistance to brittle fracture of steel after operation in the marine gantry crane elements,” Metallofiz. Noveishie Tekhnol., 41, No. 6. 825-836 (2019). https://doi.org/10.15407/mfint.41.06.0825
8. H. V. Krechkovs’ka, and O. Z. Student, “Determination of the degree of degradation of steels of steam pipelines according to their impact toughness on specimens with different geometries of notches,” Mater. Sci., 52, No. 4., 566-571 (2017). https://doi.org/10.1007/s11003-017-9991-z
9. A. R. Dzyubyk, A. A. Voitovych, L. V. Dzyubyk, and L. O. Babii, “Specific features of the fatigue fracture of welded joints of 34KhN2MA steel formed by electrodes with different phase compositions,” Mater. Sci., 54, No. 2., 215-222 (2018). https://doi.org/10.1007/s11003-018-0176-1
10. A. Y. Krasowsky, A. A. Dolgiy, and V. M. Torop, “Charpy testing to estimate pipeline steel degradation after 30 years of operation,” In. Proc. “Charpy Centary Conference”, Poitiers, Vol. 1, 489-495 (2001).
11. H. V. Krechkovs’ka, O. Z. Student, A. I. Kutnyi, H. M. Nykyforchyn, and P. Ya. Sydor, “Brittle-fracture resistance of the metal of hyperboloid grid shell Shukhov tower,” Mater. Sci., 50, No. 4. 578-584 (2015). https://doi.org/10.1007/s11003-015-9756-5
12. H. Nykyforchyn, V. Pustovyi, O. Zvirko, P. Semenov, M. Hredil, O. Nemchuk, O. Oliynyk, and O. Tsyrulnyk, “Analysis of operational factors affecting the serviceability of seaport hoisting and transporting equipment,” Proc. Struct. Int., 41, 326-332 (2022). https://doi.org/10.1016/j.prostr.2022.05.038
13. V. М. Pustovyi, P. О. Semenov, О. О. Nemchuk, М. І. Hredil, О. А. Nesterov, and V. V. Strelbitskyi, “Degradation of steels of the reloading equipment operating beyond its designed service life,” Mater. Sci., 57, No. 5. 640-648 (2022). https://doi.org/10.1007/s11003-022-00590-1
14. T. O. Nenastina, K. V. Berezhna, M. D. Sakhnenko, and S. O. Buhaievskyi, “Degradation of reinforced concrete construction of bridge structures: corrosion aspect,” Mater. Sci., 59, No. 5. 538-545 (2023). https://doi.org/10.1007/s11003-024-00809-3
15. DSTU ISO 6892-1:2019. Metal Materials. Tensile Tests. P. 1. Test Method at Room Temperature [in Ukrainian]. (ISO 6892-1:2016, IDT).
16. DSTU 8541:2018. Structural Rolling from Unalloyed and Alloyed Steel for Urban Constructions. Technical Requirements [in Ukrainian] (2019).
17. S. J. Rosenberg, and D. H. Gagon, “Effect of grain size and heat treatment upon impact toughness at low temperatures of medium carbon forging steel,” Part of J. of Res. of the National Bureau of Standards, 27, 159-169 (1941). https://doi.org/10.6028/jres.027.006
18. B. Hwang, Y. G. Kim, S. Lee, Y. M. Kim, N. J. Kim, and Y. Yoo, “Effective grain size and Charpy impact properties of high-toughness X70 pipeline steels,” Metall. Mater. Trans. A, 36, Is. 8, 2107-2114 (2005) https://doi.org/10.1007/s11661-005-0331-9