| 摘要 |
PROBLEM TO BE SOLVED: To provide a tank for storing a low-temperature liquid which can surely eliminate outside tensile bending moment and tensile stress occurring in an underside end of a dike, and reduce an amount of a longitudinal PC steel material and a reinforcing steel (steel material amount).SOLUTION: In a concrete tank body part 10 composed of a bottom plate 2 and a dike 3, a plurality of longitudinal PC steel materials 11 for introducing pre-stress in a vertical direction of the tank body part 10 and a plurality of lateral PC steel materials 7 for introducing the pre-stress in a peripheral direction of the tank body part 10 are buried. In the longitudinal PC steel material 11, a PC steel rod provided with a fixing part is used in an upper end 11b side and in an under end 11a side, and the longitudinal PC steel materials 11 are compactly arranged in an under end 3a side of the tank body part 10 and are arranged with an interval in the peripheral direction of the tank body part 10. Furthermore, the longitudinal PC steel materials 11 adjacent to each other in the peripheral direction are arranged so that positions of both upper ends 11b shift vertically from each other and positions of both under ends 11a shift vertically from each other. |
