製造・施工(1)

[V-265] Measures to Prevent Thermal Cracking of Concreate in the Large Water Gate Construction

〇KANEMOTO KAZUNORI¹, TAMEISHI MASAHIRO¹, USHIZIMA KOICHIRO¹ (1.KONOIKE CONSTRUCTION)

Keywords:Large Water Gate, pipe cooling, mass concrete, Thermal Cracking

Maikawa water gate was a large-scale water gate, and there was concern about outbreak of the harmful crazing by the temperature stress at construction. Therefore as a result of performing three-dimensional temperature stress analysis, and having examined the effective crazing measures method for this structure, I did pipe cooling with main measures, and it was revealed that I restrained outbreak of the crazing by putting the plural measures of others together. As a result of carrying out measures based on an examination result, and having undertaken construction, I was able to actually control outbreak of the crazing.