One The first single column foundation construction: after the orientation is selected, the setting out is required and the excavator is used for excavation. After the excavation of the foundation pit, the protection work should be done around the foundation pit, and eye-catching signs should be placed to ensure the safety of vehicles and pedestrians nearby. Secondly, the bottom of the foundation pit should be treated. After the bottom correction, the reinforcement should be bound and the anchor bolts and flange plates should be supported At this time, it is necessary to inspect the size of the foundation pit and the steel bar binding operation. After the inspection, the concrete is poured. Generally, the self unloading method is used to transport the concrete to the pit foundation. When the concrete mixer truck is not allowed to arrive at the construction site, the pump truck is required to transport the concrete. When the concrete is transported, the surface shall be treated flat and the protective layer shall be installed, and then the maintenance shall be carried out.
Production of T-type brand
Two Secondly, the semi-finished products processing of T-type brand: the single column is processed into semi-finished products by the processing plant, and then transported to the site for assembly and welding. At the early stage of the spiral pipe column, professional rust removal equipment was selected for rust removal, and iron red corrosion prevention was carried out. At the same time, the spiral pipe steel column was welded with flange angle rib plate and connecting hollow round steel plate. After welding, the welding seam coating was removed, and the anti-corrosion was done for 3 times to ensure the screw The paint surface of the steel column of the rotary tube is clean.
3. Subsequently, the construction of deck and supporting steel beam: crane is used to install the deck steel frame, support cross arm and central column of plate surface, and the steel structure of plate surface steel frame, support cross arm and plate surface central column shall be positioned, assembled and welded. After the welding of the steel structure on the plate surface is completed, check and remove the coating of the weld to prevent corrosion and make up the leakage. The long side of the grooving color steel plate should be vertical downward to ensure that the finished grooving color steel plate is flat and beautiful.
4. Hoisting construction of outdoor large billboard surface: attention should be paid to the accurate wire setting during column hoisting to ensure no wire biting. Drop and hoist in place, close wire and tighten wire evenly to ensure wire tightening in place. Then close the steel structure of the second master plate. When hoisting the steel structure on the signboard, attention should be paid to the firmness of the lifting points, and the lifting points should be evenly and parallel rising. When it is lifted to a certain height, it shall be lifted to the upper end of the column connection, and the personnel on the ground shall coordinate to align the contact point for accurate lifting. The position of the billboard shall be adjusted by the personnel on the ground. After the fixed point is finished, the welding personnel shall mount the upper end of the column for welding operation. Welding is firm and lifting is removed. The crane was evacuated and the welding workers strengthened the welding joint. Other operators shall arrange the work place. Welding operation, site arrangement and completion. The operator shall review the completion of the completed billboard.
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