The installation position of the tower shoe must comply with the design requirements of the construction drawing, the tower shoe and the top surface of the foundation must be closely fitted, the allowable gap is ≤3mm, but the area must not exceed 25% of the bottom of the tower shoe, and the bolt holes of the tower shoe and the top surface of the foundation are pre-buried The deviation of the central axis of the bolt is ≤1.5mm, the center spacing of each tower shoe must be equal, the allowable deviation is ≤2.5mm, the diagonal of the quadrilateral tower must be equal, the deviation is ≤3mm, the height deviation of each tower shoe is ≤1.5mm, and each tower shoe is adjusted properly After leveling, temporary reinforcement measures must be taken to make it bear the load of one or several structural units. After the first structural unit is installed, the accuracy and verticality of the structural installation must be checked with theodolite. Support or fill with cement mortar under the tower shoe steel plate.
      When it is necessary to use the installed structure to hoist other components and equipment, the consent of the design unit must be obtained, the strength and stability of the relevant components must be checked, and reliable measures must be taken to prevent damage to the structure. The regenerative method used in the manufacture of the iron tower is mainly suitable for the cast-in-place concrete project with a temperature ≥ -15 ℃ and a thick structure to heat the raw material sand, gravel and water, so that the concrete is completed after mixing, transportation and pouring. It also reserves a considerable amount of heat to accelerate the hydration heat release and strengthen the insulation of the concrete to maintain a certain frost resistance before the temperature drops to 0 °C. When using the thermal storage method, the structure should be thick and the exposed area is smaller, the heat dissipation loss through the surface will be less, and the stored heat will be more. Therefore, attention should be paid to a small amount of cooling inside, and attention should be paid to protecting exposed and corners from freezing.
      This method is simple in process, low in cost and sufficient maintenance period. The coated parts can be derusted with quartz sand, so that the derusting treatment can reach the first-level derusting quality, that is, the steel surface shows all the metal color and has a certain roughness to ensure that the spray coating is firmly adsorbed on the surface of the component. The components should be pre-heated before thermal spraying. The chemical solution containing zinc and aluminum must be uniform when sprayed, and the adsorption must be firm.