Conclusions
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1.
When designing pipelines on collapsing soils it is necessary to take into account the most unfavorable conditions from the viewpoint of bending of the pipeline—settlement of the intermediate supports every other one, all even or all odd.
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2.
In this case, if the amount of deflection of the penstock under load is less than the amount of settlement of the intermediate supports, it is necessary to take into account disconnection of the intermediate roller support from work.
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3.
Control assembly of members of the assembly links during manufacture of the oversize penstocks as well as quality control of the welded joints during enlargement are necessary conditions for achieving a high quality and eliminating losses of time during assembly.
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4.
To shorten the time of construction and assembly works, provided a thoroughly conducted geodetic survey, it is expedient to assemble the penstock from two sides—from the side of the water intake and from the side of the powerhouse.
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References
A. R. Freishist, A. Kh. Khokharin, and A. M. Shor, Steel Pipelines of Hydroelectric Stations [in Russian], Énergoizdat, Moscow (1982).
SNiP 1-23-81. Design Standards. Steel Structures [in Russian], Stroiizdat, Moscow (1988).
SNiP 2.06.09-84. Hydraulic Tunnels [in Russian], Gosstroi, Moscow (1985).
Instructions on Designing Steel Pipelines of Hydraulic Structures MU 34-747-76 [in Russian], Informénergo, Moscow (1977).
A. N. Goncharov, Yu. Ya. Pavshinskii, and A. D. Ustinov, Development of Mechanical Equipment of River Hydraulic Structures [in Russian], Énergiya, Moscow (1980).
V. Ya. Martenson, B. A. Nikolaev, V. N. Panin, and Yu. Ya. Pavshinskii, Handbook of the Assembler of Mechanical Equipment of Hydraulic Structures [in Russian], Énergoizdat, Moscow (1984).
A. R. Freishist, I. V. Martenson, and I. D. Rozina, Increase of the Reliability of Mechanical Equipment and Steel Members of Hydrautic Structures [in Russian], Énergoizdat, Moscow (1987).
G. Ya. Frenkel', Corrosion Protection of Mechanical Equipment and Special Steel Members, Penstocks of Hydraulic Structures of Power and Water-Management Objects by Organic and Metallized Coatings and Electrochemical Methods [in Russian], Gidromontazh, Moscow (1995).
G. A. Polonskii, E. S. Lyubashevskii, B. A. Nikolaev, and A. R. Freishist, Mechanical Equipment of Hydraulic Structres [in Russian], Énergoizdat, Moscow (1993).
Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 40–45, January, 1997.
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Chernyavskii, V.I., German, V.A. & Tuzman, A.M. Penstocks of the Thac Mo hydroelectric station in Vietnam. Hydrotechnical Construction 31, 47–52 (1997). https://doi.org/10.1007/BF02767288
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DOI: https://doi.org/10.1007/BF02767288