Safety assessment of massive buttress dams in the presence of thermal cracks in them

Cover Page

Cite item

Full Text

Abstract

In the 1950s, the construction of hydropower facilities began in the regions of Siberia and the Far East, characterized by harsh climatic conditions, which should be taking into account to predict the stress state of dams. The aim of the study is an assessment of the conditions for the formation of temperature cracks in concrete dams and their influence on the further operation of the structure, as well as measures and technologies to combat cracking in massive concrete. Thermal stresses often exceed the stresses caused by the action of external loads and lead to the appearance of cracks in the concrete. Almost all modern concrete dams are subject to thermal cracking today. Appropriate design and technological measures must be provided for. When studying the thermally stressed state of lightweight concrete dams, the method of direct reproduction of thermal deformations on models made of brittle materials and computational methods oriented towards computer methods of solving problems are used. The results of modeling and computational studies of massive buttress dams are presented and the influence of the main influencing factors is considered, taking into account the effect of cracking on the operation of such dams.

About the authors

Vladimir A. Zimnyukov

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Email: zimnyukov@rgau-msha.ru
ORCID iD: 0000-0002-9892-146X
SPIN-code: 9152-1962

Candidate of Technical Sciences, Associate Professor of the Department of Hydraulic Structures

49 Timiryazevskaya St, Moscow, 127434, Russia Federation

Marina I. Zborovskaya

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Author for correspondence.
Email: moo_abh@mail.ru
ORCID iD: 0000-0002-8405-8757
SPIN-code: 6748-0927

Candidate of Technical Sciences, Associate Professor of the Department of Hydraulic Structures

49 Timiryazevskaya St, Moscow, 127434, Russia Federation

References

  1. Teleshev V.I. Improvement of constructive and technological solutions for concrete dams on rocky foundations. Gidrotekhnicheskoe Stroitel'stvo. 2007;(5):22–24. (In Russ.)
  2. Fomicheva N.N. Thermally stressed state of concreting blocks of hydraulic structures during the construction period, considering elastic-yielding bonds (dissertation of the Candidate of Technical Sciences). Novosibirsk; 1984. (In Russ.)
  3. Kozlov D.V., Krutov D.A. The use of insulation in the design of concrete dams operating in a harsh climate. Prirodoobustrojstvo. 2017;(2):27–33. (In Russ.)
  4. Aniskin N.A., Hoang N. Predicting crack formation in solid concrete dams in severe climatic conditions during construction period. Vestnik MGSU. Monthly Journal on Construction and Architecture. 2014;(8):165–178. (In Russ.)
  5. Aniskin N.A., Trong Chuc N. The problem of temperature cracking in concrete gravity dams. Vestnik MGSU. Monthly Journal on Construction and Architecture. 2020;15(3):380–398. (In Russ.) https://doi.org/10.22227/1997-0935.2020.3.380-398
  6. Ginzburg S.M., Sheinker N.Ya., Dobretsova I.V., Voznesenskaya N.V. Research on the thermal behavior of concrete structures. Proceeding of the VNIIG. 2011;263:87–97. (In Russ.)
  7. Fomin B.G., Kornyushina M.P. Cementing materials for monolithic concrete dams. RUDN Journal of Engineering Researches. 2010;(2):100–108. (In Russ.)
  8. Demyanova E.A. On the issue of determining the minimum size of cracks that can be cemented. Proceedings of VNII VODGEO. 1971;31. (In Russ.)
  9. Zimnyukov V.A. Influence of crack formation on the thermally stressed state of massive buttress dams. Gidrotekhnicheskie Sooruzheniya, Osnovaniya i Fundamenty. 1979;62:123–135. (In Russ.)
  10. Bronstein V.I., Zimnyukov V.A. Comparison of the results of experiments and calculations by the finite element method of the thermally stressed state of lightweight concrete dams. Gidrotekhnicheskie Sooruzheniya. 1978;58:78–85. (In Russ.)
  11. Trapeznikov L.P. Temperature crack resistance of massive concrete structures. M.: Energoatomizdat Publ.; 1986. (In Russ.)
  12. Bronstein V.I., Zimnyukov V.A., Kaganov G.M. Investigation of the thermally stressed state of concrete dams, considering the compliance of the foundation. Work of Concrete Dams Together with a Rocky Base: Proceedings of Conferences and Meetings on Hydraulic Engineering. Leningrad: Energiya Publ; 1979. p. 101–108. (In Russ.)
  13. Zimnyukov V.A., Zborovskaya M.I., Zaitsev A.I. Accounting for temperature effects during the operation of hydraulic structures. Moscow: Russian State Agrarian University – Moscow Timiryazev Agricultural Academy; 2019. (In Russ.)
  14. Zimnyukov V.A., Zborovskaya M.I. Modeling of the thermally stressed state of concrete hydraulic structures using thermopiles. Safety of Energy Facilities: Scientific, Technical and Production Collection (issue 12, p. 137–146). Moscow: NIIES Publ.; 2003. (In Russ.)
  15. Ali W., Urgessa G. Numerical prediction model for temperature distributions in concrete at early ages. American Journal of Engineering and Applied Sciences. 2012;5(4):282–290. https://doi.org/10.3844/ajeassp.2012.282.290
  16. Abdulrazeg A.A., Noorzaei J., Khanehzaei P., Jaafar M.S., Mohammed T.A. Effect of temperature and creep on roller compacted concrete dam during the construction stages. Computer Modeling in Engineering & Sciences. 2010;68(3):239–268. https://doi.org/10.3970/cmes.2010.068.239
  17. Malm R., Ansell A. Cracking of concrete buttress dam due to seasonal temperature variation. ACI Structural Journal. 2011;1(1):13–22. https://doi.org/10.14359/51664198
  18. Enzell J., Malm R., Tollsten M. Predicting the influence of seasonal thermally induced cracking on a reinforced concrete arch dam. KSCE Journal of Civil Engineering. 2022;26:2707–2721. https://doi.org/10.1007/s12205-022-0112-7
  19. Aufleger M., Goltz M., Conrad M. Distributed fibre optic temperature measurements – a competitive alternative for temperature monitoring in large RCC dams. The 5th International Symposium on RCC Dams. Guiyang; 2007. p. 1–8.

Copyright (c) 2023 Zimnyukov V.A., Zborovskaya M.I.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies