Conclusions
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1.
The selection and assignment of optimal temperatures for grouting joints are important for the thermal stress state of the dam during construction and its operation.
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2.
Three temperature zones can be distinguished (vertically) in reservoirs of high dams:
upper, where considerable variations of the average monthly temperatures occur during the year;
middle (transition), where gradual fading of temperatures occurs;
lower, where almost no variations of the temperature regime occur during the entire year.
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3.
In deep reservoirs the lower temperature zone, occupying more than 0.5H, is characterized by isotherm T=3.5°C. The long effect of this zone on concrete of the upstream face of the structure, just as the effect of higher zones, should be taken into consideration when planning and performing the works.
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4.
To improve the stress state of the structure and to provide its general solidity, it is recommended to assign individually several temperatures of sealing the joints being grouted depending on their position in the dam.
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5.
Six optimally selected temperatures of sealing the joints located in the region of the upstream face (upper, middle, and lower zones), downstream face, contact part (dam foundation), and core part can correspond best to the existing temperature regime of the dam's concrete.
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References
S. Ya. Frid and D. P. Levenikh, Temperature Effects on Hydraulic Structures under Northern Conditions [in Russian], Stroiizdat, Leningrad (1978).
Provisional Instructions on Providing Solid Concrete of Hydraulic Structures Constructed in Regions with a Markedly Continental Climate: VSN 02-64 [in Russian], Énergiya, Moscow-Leningrad (1964).
V. N. Zhivoderov, “Checking and evaluating the quality of grouting joints made under construction conditions,” in: Hydraulic Structures, Bases, and Foundations. Engineering Designs, Tr. MGMI,69 (1981).
V. N. Zhivoderov, Author's Certificate 723021, “Method of sealing massive concrete structures,” Byull. Izobr., No. 11 (1979).
N. N. Sokolov et al., Problems of the Ice and Thermal Regime When Designing the Sayano-Shushenskoe Power Complex [in Russian], Énergoatomizdat, Moscow (1987).
Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 9, pp. 27–32, September, 1993.
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Zhivoderov, V.N. Criteria for selecting and assigning optimal temperatures for grouting joints. Hydrotechnical Construction 27, 532–539 (1993). https://doi.org/10.1007/BF01545374
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DOI: https://doi.org/10.1007/BF01545374