Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of freezing temperatures in concrete on the behavior of high concrete dams
Conclusions 1. To obtain a correct a correct picture of the behavior of high dams under rigorous climatic conditions, it is necessary to take into account the thermal effects giving rise to a thermally-deformed concrete state during construction and operation of hydraulic structures. When estimating these thermal effects, it is necessary to take into a ccount the change in the coefficient of linear expansion of concrete in the regions exposed to negative temperatures. Theoretical investigations of the thermal stresses of concrete carried out with a constant value of α can lead to an error of as much as 100%. 2. An increase in the coefficient of linear expansion of concrete at a negative temperature causes a considerable increase in tensile stresses in the surface parts of blocks, in the temperature-induced component of horizontal displacement of the dam crest and openings of the intercolumn and horizontal interblock joints on the downstream face. 3. An increase in the depth of opening of the horizontal expansion joints on the downstream face leads to a decrease in the temperature component of displacement and tensile stresses on the upstream face of the dam.
Effect of freezing temperatures in concrete on the behavior of high concrete dams
Conclusions 1. To obtain a correct a correct picture of the behavior of high dams under rigorous climatic conditions, it is necessary to take into account the thermal effects giving rise to a thermally-deformed concrete state during construction and operation of hydraulic structures. When estimating these thermal effects, it is necessary to take into a ccount the change in the coefficient of linear expansion of concrete in the regions exposed to negative temperatures. Theoretical investigations of the thermal stresses of concrete carried out with a constant value of α can lead to an error of as much as 100%. 2. An increase in the coefficient of linear expansion of concrete at a negative temperature causes a considerable increase in tensile stresses in the surface parts of blocks, in the temperature-induced component of horizontal displacement of the dam crest and openings of the intercolumn and horizontal interblock joints on the downstream face. 3. An increase in the depth of opening of the horizontal expansion joints on the downstream face leads to a decrease in the temperature component of displacement and tensile stresses on the upstream face of the dam.
Effect of freezing temperatures in concrete on the behavior of high concrete dams
Durcheva, V. N. (Autor:in)
Hydrotechnical Construction ; 7 ; 238-242
01.03.1973
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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