Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) на платформе Web of Science

  • Thermal Stress State of a Roleed Conrete Dam During Construction in Viet Nam
  • UDC 627.8
    Nikolay A. ANISKIN, e-mail:
    Nguyen Trong CHUC, e-mail:
    Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
    Abstract. One of the most popular types of water-retaining structures used in hydraulic engineering is massive concrete gravity dams. When constructing them, temperature impacts on the structure are main factors. As a result of heat emission during the hydration of cement and the impact of many other factors, significant temperature gradients and appearance of cracks may occur. Among the measures to reduce the heating of the structure during construction and reduce the risk of thermal cracks generation is a reduction in the consumption of cement. This is implemented using the technology of rolled concrete. However, for dams from rolled concrete, the problem of thermal cracking is very acute. Different measures are taken to regulate the temperature regime and to achieve the desired result. A preliminary assessment of the possible temperature regime and the thermal stress state of the structure under construction is required. Using the method of numerical simulation (finite element method), the formation of the temperature regime in time and the thermal stress state of the dam of rolled concrete, which is erected in relation to the conditions of North Vietnam, is predicted. With the help of the software package, non-stationary calculations of the temperature regime of the dam were performed, maximum temperatures and temperature gradients were determined. For different moments of time, the thermal stress state of the structure was calculated; the analysis of a possible crack formation of the structure was made.
    Key words: concrete dam, temperature regime, exothermic heating, maximum temperature, temperature drop, cracking, temperature control.
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  • For citation: Aniskin N. A., Nguyen Trong Chuc. Thermal Stress State of a Roleed Conrete Dam During Construction in Viet Nam. Promyshlennoye i grazhdanskoye stroitel'stvo [Industrial and Civil Construction], 2018, no. 11, pp. 57-61. (In Russian).