This paper presents the result of numerical investigation on initiation and extension of cracks in a concrete gravity dam caused by the temperature change in the body during one year after finish of the dam concrete work. Information on the…
This paper presents the result of numerical investigation on initiation and extension of cracks in a concrete gravity dam caused by the temperature change in the body during one year after finish of the dam concrete work. Information on the thermal crack for concrete, especially on the extension, is very scarce. In this investigation, therefore, authors use a criterion that a crack extends only in the case when the energy release rate at the moment of extension exceeds that at initiation of the crack, and for this end adopt the concept of the virtual crack extension method. Three different cases of the finish time of concrete placing are compared.