Calculation of reinforcement columns for rectangular water tanks

Thread Content

I have a frozen salt water tank with a capacity of 300 m3, a specific gravity of 1.3, and dimensions of 14 meters in length, 4 meters in width, and 5.5 meters in height. It is reinforced using E-type reinforcement; the horizontal reinforcement rings are made of 9# angle steel. The numbers of these reinforcement rings and the distances between them are as follows: H1, mm; H2, mm; H3, mm; H4, mm; H5, mm; H6, mm – 51500, 1000, 900, 850, 650, 600. The reinforcement columns to be used are 9# channel steel, with a spacing of 800 mm between them. When calculating the cross-sectional area required for these reinforcement columns, should the total height of 5500 mm be used, or should the maximum distance between the reinforcement rings, which is 1500 mm, be taken into account? Some people on the internet say to choose 1500mm, while others suggest choosing 5500mm; the main text and explanations in the standard NB/T47003 also do not provide clear guidance. If 5500 mm is chosen, B/A = 6.875; it is still not possible to find the value of the coefficient α in Figure 8-7 of the standards, or in P77, or through interpolation methods, or in Table 10 at P120. Someone with experience in these calculations, please help out promptly. 4.2 Verification of the cross-sectional coefficient required for the reinforcement column: Zp, cm3Lp*i, max3)/t – δwe2/6]