The installation of the main structure is a crucial stage in the construction process. During hoisting, key components such as steel columns, beams, and purlins must be positioned accurately using multiple methods. High-strength bolt connections must be pre-tightened according to design requirements to ensure joint rigidity.
Welding operations in low-temperature environments must adhere to winter construction specifications, employing preheating and slow cooling measures to prevent cold-brittle cracking in the welds. The installation quality of the enclosure system directly determines its insulation and waterproofing performance. Sandwich panels must be installed with tight joints between panels, and the special sealant must be fully applied to prevent cold bridging and leaks. The longitudinal overlaps and transverse interlocking of the roof's color steel panels must conform to the design direction, and the fixed supports must be firmly installed to ensure they do not loosen under wind suction.
