There are many methods for the construction of vertical cylindrical storage tanks, such as the bottom-top method, the central column method, the roof air-raising method, the water float method, the top-bottom inner column method, etc. Today, the the top-bottom inner column method is more commonly used.
Compared with the bottom-top method, the top-bottom method has high labor efficiency and low labor intensity. The construction personnel operate on platforms below 2 meters, so the personal safety is reliably guaranteed. The top-bottom method is divided into the electric hoist top-bottom method and the hydraulic jack top-bottom method. Compared with the hydraulic jack, the electric hoist top-bottom method not only has the advantages of simple equipment, simple operation, low cost, etc., but also does not use hydraulic oil, pressure components and other consumables, no oil leakage, and no pollution to the working environment.