技術開発(1)

[VI-971] (Analytical)Study on effective range of horizontal pipe cooling

〇Makoto Mizutani¹, Keizo Kanzaki¹, Tetsuji Yamaguchi¹, Shota Abe¹ (1.Kumagaigumi CO.,LTD)

Keywords:water and air combination pipe-cooling method, the thermal stress cracking, temperature stress analysis

Vertical pipe cooling has an effect of suppressing a rise in temperature of concrete and suppressing temperature cracks in concrete.Instead, we have developed a horizontal air cooling method with water injection.This time, the range of the temperature control effect of this method was measured by actual structures and verified by numerical analysis.
As a result, it was found that the effective range of the temperature suppression effect by this method was about 300mm around the cooling pipe.In addition, a quantitative value could be obtained for the arrangement interval of the cooling pipes which is effective in suppressing cracks.