inbureИзвестия вузов. Инвестиции. Строительство. НедвижимостьIzvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost2227-29172500-154XIrkutsk National Research Technical University10.21285/2227-2917-2023-2-316-323inbure-79Research ArticleТЕХНИЧЕСКИЕ НАУКИ. СТРОИТЕЛЬСТВОTECHNICAL SCIENCES. CONSTRUCTIONПроектное прогнозирование эксплуатационной надежности cооружений в суровых климатических условияхDesign forecasting of serviceability of structures in harsh climatic conditionshttps://orcid.org/0000-0002-3067-9478ПинусБ. И.PinusB. I.

Пинус Борис Израилевич - доктор технических наук, профессор, профессор кафедры строительного производства,

664074, Иркутск, ул. Лермонтова, 83

Boris I. Pinus - Dr. Sci. (Eng.), Professor, Professor of the Department of Building Production.

83 Lermontov St., Irkutsk 664074

pinus@istu.eduИркутский национальный исследовательский технический университетРоссияIrkutsk National Research Technical UniversityRussian Federation202309112023132316323Copyright © Пинус Б.И., 20232023Пинус Б.И.Pinus B.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://inbure.elpub.ru/jour/article/view/79

На основании системного анализа физических закономерностей взаимодействия внешней низкотемпературной среды и железобетонных конструкций и его последствий предложен графоаналитический алгоритм коррекции нормативных функциональных зависимостей показателей эксплуатационной пригодности по условиям обеспечения требуемой надежности в расчетный срок эксплуатации. Динамическая модель работы конструкции рассматривается в форме совокупности статических испытаний на различных этапах низкотемпературных стандартизированных воздействий. При этом временной фактор анализируется в виде относительного (к марке по морозостойкости) количества циклов, что позволяет получить статистическое обобщение различных испытаний. Контролируемые параметры надежности обоснованы методами статистического анализа с учетом изменчивости всех параметров, входящих в нормативные критериальные модели. При этом их чувствительность и информационная представительность оценивается апробированными методами вероятностного прогноза. Экспериментально подтверждена технико-экономическая приемлемость и целесообразность предлагаемого подхода к коррекции обеспечения параметрической надежности изгибаемых железобетонных конструкций. Выполнены статистически представительные экспериментальные исследования с автоматической фиксацией всех значимых параметров сопротивления на различных этапах исчерпания ресурса усталостной структурной трансформации конструктивных элементов «северного исполнения». Получена картотека графических зависимостей отказных значений прочности изгибаемых элементов в полях рассеивания различного уровня их армирования и в различных температурновлажностных климатических условиях. Подтверждено существенное влияние температур и внутреннего сопротивления на параметрические отказы конструктивных элементов априорно установленной обеспеченности (вероятности).

By using system analysis, which examines the physical laws of the interaction between external low-temperature environments and reinforced concrete structures, along with their resulting consequences, a graphical-analytical algorithm is proposed in order to adjust the standard functional relationships of serviceability indicators, thereby ensuring the required reliability within the designated service life. The analysis of structural behaviour was carried out through a dynamic model, which involves a combination of static tests at different stages of standardized low-temperature actions. In this case, the time factor was analysed in the form of a relative (to the frost-resistance grade) number of cycles, enabling the statistical compilation of various tests. The controlled reliability parameters were substantiated by the methods of statistical analysis with due regard for the variability of all the parameters within the standard criteria models. Here, their sensitivity and representativeness were assessed using approved probabilistic forecast methods. The technical and economic feasibility of the proposed approach for adjusting the parametric reliability of bending reinforced concrete structures was experimentally confirmed. Statistically significant experimental studies were carried out with automatic registration of all significant resistance parameters during various stages of fatigue-induced structural transformations of the elements intended for arctic service. A catalogue, containing graphical relationships of ultimate tensile strength values for bending elements within dispersion fields at different levels of reinforcement and under varying temperature-humidity climatic conditions, was compiled. The research findings confirm the significant influence of temperature and internal resistance on the parametric failures of structural elements having previously established reliability (probability).

эксплуатационная надежностьдинамическая модельморозная деградацияoperational reliabilitydynamic modelfrost degradationReferencesLi W.T., Sun W., Jiang J.Y. Damage of Concrete Experiencing Flexural Fatigue Load and Closed Freeze/thaw Cycles Simultaneously // Concrete and building materials. 2011. No. 25 (5). P. 2604–2610. https://doi.org/10.1016/j.conbuildmat.2010.12.007.Li W.T., Sun W., Jiang J.Y. Damage of Concrete Experiencing Flexural Fatigue Load and Closed Freeze/thaw Cycles Simultaneously. Concrete and Building Materials. 2011;25(5):2604-2610. https://doi.org/10.1016/j.conbuildmat.2010.12.007.Soroushian P., Elzafraney M. Damage Effects on Concrete Performance and Microstructure // Cement and concrete composites. 2004. No. 26 (7). P. 853–859. https://doi.org/10.1016/j.cemconcomp.2003.05.001.Soroushian P., Elzafraney M. Damage Effects on Concrete Performance and Microstructure. Ce-ment and Concrete Composites. 2004;26(7):853-859. https://doi.org/10.1016/j.cemconcomp.2003.05.001.Shang H.S., Song Y.P. Experimental study of strength and deformation of plain concrete under biaxial compression after freezing and thawing cycles // Cement and Concrete Research. 2006. No. 36. P. 1857–1864. https://doi.org/10.1016/j.cemconres.2006.05.018.Shang H.S., Song Y.P. Experimental study of strength and deformation of plain concrete under biaxial compression after freezing and thawing cycles. Cement and concrete research. 2006;36:18571864. https://doi.org/10.1016/j.cemconres.2006.05.018.Карпенко Н.И. Общие модели механики железобетона. М.: Стройиздат, 1996. 416 с.Karpenko N.I. General models of reinforced concrete mechanics. Moscow: Stroyizdat; 1996. 416 p. (In Russ.).Актуганов И.З., Пушкин А.А. Экспериментальная проверка принципа линейность суммирования повреждений бетона при действии нестационарных знакопеременных циклов. В кн.: Вопросы надежности железобетонных конструкций. Куйбышев, 1972. С. 5–8.Aktuganov I.Z., Pushkin A.A. Experimental verification of the principle of linearity of summation of concrete damages under the action of nonstationary alternating cycles. In: Questions of reliability of reinforced concrete structures. Kuibyshev, 1982. p. 5-8 (In Russ.).Важенин В.В. К вопросу о морозостойкости бетона и железобетона. В кн.: Вопросы надежности железобетонных конструкций. Челябинск, 1966. С.197–199.Vazhenin V.V. On the issue of frost resistance of concrete and reinforced concrete. In: Questions of reliability of reinforced concrete structures. Chelyabinsk, 1966. p.197-199. (In Russ.).Гладков В.С. О разрушении гидротехнического бетона при многократном замораживании и оттаивании в нестационарном режиме // Труды координационных совещаний по гидротехнике. 1972. Вып. 73. С. 133–142.Gladkov V.S. On the destruction of hydraulic concrete during repeated freezing and thawing in a non-stationary mode. Trudy koordinatsionnykh soveshchanii po gidrotekhnike. 1972; 73:133-142. (In Russ.).Пинус Б.И., Пинус Ж.Н., Хомякова И.В. Изменение конструктивных свойств бетонов при охлаждении и замораживании // Вестник Иркутского государственного технического университета. 2015. № 2 (97). С. 111–116. EDN: TKOKYR.Pinus B.I., Pinus Zh.N., Khomyakova I.V. Change in concrete structural properties under cooling and freezing. Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta = Proceedings of Irkutsk state technical university. 2015; 2:111-116. (In Russ.). EDN: TKOKYR.Pinus B.I. Consideration of cumulative effects un concrete structures at low temperatures impact. In: Investment, Construction, Real Estate: New technologies and special-purpose development priorities: International scientific conference // MATEC Web of Conferences. 2018. Vol. 212. P. 01025.212:01025. https://doi.org/10.1051/matecconf/201821201025.2018.Pinus B.I. Consideration of cumulative effects un concrete structures at low temperatures impact. In: Investment, Construction, Real Estate: New Technologies and Special-Purpose Development Priorities: International Scientific Conference. MATEC Web of Conferences. 2018;212:01025. https://doi.org/10.1051/matecconf/201821201025.Трофимов Б.Я., Погорелов С.Н. Исследование деформации бетона в процессе циклического замораживания. В кн.: Работоспособность строительных материалов при воздействии различных эксплуатационных факторов. Казань, 1986. С. 79–82.Trofimov B.Ya., Pogorelov S.N. Investigation of concrete deformation during cyclic freezing. In: The efficiency of building materials under the influence of various operational factors. Kazan; 1986. p. 79-82. (In Russ.).Penttala V., Al-Neshawy F. Stress and strain state of concrete during freezing and thawing cycles // Cement and concrete research. 2002. Vol. 32. No. 9. P. 1407–1420. https://doi.org/10.1016/S0008-8846(02)00785-8.Penttala V., Al-Neshawy F. Stress and Strain State of Concrete During Freezing and Thawing Cycles. Cement and concrete research. 2002;32:1407-1420. https://doi.org/10.1016/S00088846(02)00785-8.Minhoto M.J.C., Pais J.C., Fontes L.P.T.L. Evaluation of Fatigue Performance at Different Temperatures // 2nd Workshop on Four Point Bending. Pais (ed.). University of Minho. 2009. P. 217– 230.Minhoto M.J.C., Pais J.C., Fontes L.P.T.L. Evaluation of Fatigue Performance at Different Temperatures. In: 2nd Workshop on Four Point Bending. Pais (ed.). University of Minho; 2009. p. 217–230.Pinus B.I., Pinus Z.N. Probabilistic analysis of the strength and reliability of reinforced concrete structures under low-temperature impact // Investment, construction, real estate: new technologies and special-purpose development priorities: International scientific conference (ICRE-2018) (Irkutsk, 26–27 April 2018). MATEC Web of conferences. 2018. Vol. 212. P. 01026. EDN: WTWZMC. https://doi.org/10.1051/matecconf/201821201026.Pinus B.I., Pinus Z.N. Probabilistic analysis of the strength and reliability of reinforced concrete structures under low-temperature impact. In: Investment, construction, real estate: new technologies and special-purpose development priorities: International scientific conference (ICRE-2018). MATEC Web of conferences. 26-27 April 2018, Irkutsk. 2018. Vol. 212. p. 01026. https://doi.org/10.1051/matecconf/201821201026. EDN: WTWZMC.Ueda T., Hasan M., Nagai K., Sato Ya., Wang L. Mesoscale Simulation of Influence of Frost Damage on Mechanical Properties of Concrete // Journal of Materials in Civil Engineering. 2009. Vol. 21. No. 6. P. 244–252. https://doi.org/10.1061/(ASCE)08991561(2009)21:6(244).Ueda T., Hasan M., Nagai K., Sato Ya., Wang L. Mesoscale Simulation of Influence of Frost Damage on Mechanical Properties of Concrete. Journal of Materials in Civil Engineering. 2009;21(6):244252. https://doi.org/10.1061/(ASCE)08991561(2009)21:6(244).Fagerlund G. Mechanical Damage and Fatigue Effects Associated with Freeze-thaw of Materials // Proceeding 2nd International RILEM Workshop on Frost Resistance of Concrete. 2002. P. 117–132.Fagerlund G. Mechanical damage and fatigue effects associated with freeze-thaw of materials. In: Setzer M.J., Auberg R., Keck H.-J. (Eds.). International RILEM Workshop on Frost Resistance of Concrete. 2002. p. 117-132.Hasan M., Okuyama H., Sato Y., Ueda T. Stress-strain model of concrete damaged by freezing and thawing cycles // Journal of advanced concrete technology. 2004. Vol. 2 No. 1. P. 89–99. https://doi.org/10.3151/jact.2.89.Hasan M., Okuyama H., Sato Y. et al. StressStrain Model of Concrete Damaged by Freezing and Thawing Cycles. Journal of Advanced Concrete Technology. 2004;2(1):89-99. https://doi.org/10.3151/jact.2.89.Li W., Sun W., Jiang J. Damage of concrete experiencing flexural fatigue load and closed freeze/thaw cycles simultaneously // Construction and building materials. 2011. Vol. 25 No. 5. P. 2604–2610. https://doi.org/10.1016/j.conbuildmat.2010.12.007.Li W., Sun W., Jiang J. Damage of concrete experiencing flexural fatigue load and closed freeze/thaw cycles simultaneously. Construction and Building Materials. 2011;25(5):2604-2610. https://doi.org/10.1016/j.conbuildmat.2010.12.007.Cicekli U., Voyiadjis G. Z., Abu Al-Rub R. K. A Plasticity and Anisotropic Damage Model for Plain Concrete // International Journal of Plasticity. 2007. Vol. 23 No. 10-11. P. 1874–1900. https://doi.org/10.1016/J.IJPLAS.2007.03.006.Cicekli U., Voyiadjis G. Z., Abu Al-Rub R. A plasticity and anisotropic damage model for plain concrete. International Journal of Plasticity. 2007;23(10-11):1874-1900. https://doi.org/10.1016/J.IJPLAS.2007.03.006.Михайлов К.В. Новое о прочности железобетона. М.: Стройиздат, 1977. 272 с.Mikhailov K.V. New about the strength of reinforced concrete. Moscow: Stroiizdat; 1977. 272 p. (In Russ.).Гвоздев А.А. Новое в проектировании бетонных и железобетонных конструкций. М., 1978. 202 с.Gvozdev A.A. New in the design of concrete and reinforced concrete structures. Moscow; 1978. 202 p. (In Russ.).Litvan G.G. Frost Action in Cement Paste // Materials and Structures. 1973. Vol. 6. No. 4. P. 293– 298.Litvan G.G. Frost Action in Cement Paste. Materials and Structures. 1973;6(4):293-298.Setzer M.J. Micro-ice-lens formation in porous solid // Journal of colloid and interface science. 2001. Vol. 243. No. 1. P. 193–201. https://doi.org/10.1006/jcis.2001.7828.Setzer M.J. Micro-ice-lens formation in porous solid. Journal of colloid and interface science. 2001;243(1):193-201. https://doi.org/10.1006/jcis.2001.7828.Scherer G W. Crystallization in Pores // Cement and concrete research. 1999. Vol. 29. No. 8. P. 1347–1358. https://doi.org/10.1016/s00088846(99)00002-2.Scherer G.W. Crystallization in Pores. Cement and concrete research. 1999;29(8):1347-1358. https://doi.org/10.1016/s0008-8846(99)00002-2.Fagerlund G. The critical degree of saturation method of assessing the freeze/thaw resistance of concrete // Materials and structures. 1977. Vol. 10. No. 4. P. 217–229.Fagerlund G. The critical degree of saturation method of assessing the freeze/thaw resistance of concrete. Materials and structures. 1977;10(4):217229.Fagerlund G. The International Cooperative Test of the Critical Degree of Saturation Method of Assessing the Freeze/Thaw Resistance of Concrete // Materials and Structures. 1977. Vol. 10. No. 4. P. 231–253.Fagerlund G. The international cooperative test of the critical degree of saturation method of assessing the freeze/thaw resistance of concrete. Materials and structures. 1977;10(4):231-253.Philleo R.E. Freezing and thawing resistance of high-strength concrete // NCHRP Synthesis of Highway Practice; Transportation Research Board. Washington: National Research Council, 1986. 31 p.Philleo R.E. Freezing and thawing resistance of high-strength concrete. In: NCHRP Synthesis of Highway Practice; Transportation Research Board. Washington: National Research Council; 1986. 31 p.Shang H., Song Y., Ou J. Behavior of airentrained concrete after freeze-thaw cycles // Acta mechanica solida sinica. 2009. Vol. 22. P. 261–266. https://doi.org/10.1016/S0894-9166(09)60273-1.Shang H., Song Y., Ou J. Behavior of airentrained concrete after freeze-thaw cycles. Acta mechanica solida sinica. 2009;22:261-266. https://doi.org/10.1016/S0894-9166(09)60273-1.Van de Veen V. Properties of concrete at very low temperatures: A surveys of the literature. Delft: Delft University of Technology, 1987. 123 p.Van de Veen V. Properties of concrete at very low temperatures: A surveys of the literature. Delft: Delft University of Technology; 1987. 123 p.Powerst T.C. A Working hypothesis for further studies of frost resistance of concrete // Journal of ACI. 1945. Vol. 16. No. 4. P. 245–272. https://doi.org/10.14359/8684.Powerst T.C. A Working hypothesis for further studies of frost resistance of concrete. Journal of ACI. 1945;16(4):245-272. https://doi.org/10.14359/8684.Powers T.C, Helmuth R.A. Theory of volume change in hardened portland cement pastes during freezing // Proceedings of the Highway Research Board. 1953. Vol. 32. P. 285–297.Powers T.C, Helmuth R.A. Theory of volume change in hardened portland cement pastes during freezing. Proceedings of the Highway Research Board. 1953;32:285-297.

The authors declare that there are no conflicts of interest present.