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Application of pre-embedded cold water pipe technology in large volume concrete dams
DOI:
https://doi.org/10.24425/ace.2025.156159Abstract
To address the issue of heat release during the construction of concrete dams, this study employs the approach of embedding water pipes for temperature control. Taking a large-volume concrete gravity dam in China as an example, considering environmental and river water temperatures, inputting concrete thermodynamic parameters, and taking various factors such as pipe layout, calculation parameters, pipe radius, material, spacing, and water temperature into account, the study utilizes finite element software for simulation modeling. It systematically discusses the relationship between cooling effects, costs, and engineering safety. The research results indicate that, under the condition of a rectangular section layout, with a pipe radius of 0.01 m and a spacing of 1.5 × 1.5 m, the comprehensive effect is optimal. The influence of different pipe materials on temperature reduction is minimal. When changing pipe materials, only material costs and their impact on structural safety and durability need consideration. Additionally, excessively low water temperatures during water passage can lead to internal concrete cracking, requiring attention during construction.References
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