Construction technology of extra-large steel structure canopy under severe conditions

Abstract

The invention discloses a construction technology of an extra-large steel structure canopy under severe conditions. The construction technology of the extra-large steel structure canopy under severe conditions comprises the steps that for graphic design drawings of the extra-large steel structure canopy, the TEKLA software is adopted to check and correct the graphic design drawings of the extra-large steel structure canopy based on a three-dimensional technology, so that all structural components can be accurately staked out; for the assembly and manufacture of large components in the extra-large steel structure canopy, location of an explorator is realized by means of surface positioning or hole positioning; for the installation of extra large section steel columns in the extra-large steel structure canopy, effective anti-rolling reinforcement is carried out, and a foundation anchor is inbuilt by a positioning bracket technology. An all-weather steel structure canopy construction scheme enables steel structural components to be accurate in size and hole positions are matched, thereby effectively avoiding the repair work of the components caused by the design and manufacturing quality problems; at the same time, the entire construction scheme has high safety and security, effectively reduces engineering risks, and can effectively ensure the progress, quality and safety of a construction project.

Description

technical field [0001] The invention relates to a construction technology of a canopy, in particular to a construction technology of a large steel structure canopy. Background technique [0002] The construction technology of the existing extra-large steel structure canopy is generally the components processed in the factory, which are assembled in sections on site. Common problems in the construction process are: large welding deformation and misalignment of bolt holes during the processing process, resulting in difficulty in on-site installation and matching, and increasing the workload of a large number of on-site welding and hole reaming. [0003] For example, the all-weather canopy targeted by the patent of the present invention adopts the super-large industrial factory building structure, and its space scale is huge. Among them, the elevation of the side edge of the canopy is 49.2m, and the maximum elevation of the roof ventilator is 53.8m. Due to the limitation of tr...

AI Technical Summary

Problems solved by technology

The common problems in the construction process are: in the process of processing, the welding deformation is large and the position of the bolt holes is misaligned, which makes the on-site installation difficult and increases a lot of work such as on-site welding and hole reaming.

Since the hot-dip galvanizing process is to be carried out after the splicing of the components is completed or the maximum size allowed by the process (due to the limited size of the zinc pool), due to the high temperature in the zinc pool and the large temperature difference between the inside and outside of the pool, the components will be greatly deformed after galvanizing, so Special measures must be taken in the process to strictly control, otherwise the butt joint accuracy of the connecting holes of 54,080 sets of high-strength bolts and 81,100 sets of general bolts of all components cannot be guaranteed

[0005] Furthermore, this project is a super-high and extra-large steel structure factory building, located in a tropical area with relatively harsh climate conditions, low latitude, strong sunshine and heavy rainfall, which poses a serious challenge to the safety of component installation

[0006] Under such circumstances, the existing construction scheme of the extra-large steel structure canopy cannot be applied at all

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