Industrial large-span steel structure plant construction points

1. The necessity of adopting steel structure in industrial large-span factory building

(1) High stability of steel structure

Compared with the traditional brick and concrete structure and reinforced concrete plant structure, steel structure plant has high stability, which is mainly reflected in two aspects. One aspect is the high seismic performance of the steel structure, which is due to the properties of high strength and light weight of steel, and steel also has a strong integrity, the internal material is very uniform, and can better meet the requirements of plant construction engineering mechanics. Another aspect is that the steel structure has a very good loading effect, due to the steel has a very good toughness and plasticity, can withstand a large structural deformation, the role of the load is obvious.

(2) Shorter construction period of steel structure

Compared with the traditional brick and concrete plant structure, steel structure has very obvious industrial characteristics, coupled with steel products with ready-made finished products, installation and operation, so it can greatly shorten the construction period, usually on the market, the steel structure has been left in the splicing, assembling parts and structure, according to the relevant location requirements for positioning welding and installation and fixing. If the plant needs to be relocated, the steel structure can be dismantled at any time, and the dismantled steel structure can be reapplied to the construction of the plant, which not only shortens the construction period, but also effectively reduces the construction cost, and has good economic benefits.

(3) Steel structure has energy-saving and environmental protection performance

Compared with brick-concrete structure and reinforced concrete structure, steel structure has strong green energy-saving performance no matter in the material source or in the construction process. There will not be a lot of dust and noise in the construction process of steel structure, which reduces the impact on the surrounding environment. In addition, the new wall materials compatible with the steel structure also have strong environmental performance, which improves the overall environmental quality of the plant structure in many ways.

2.The industrial large-span steel structure plant construction points to explore

(1)Construction points of steel column installation

The steel column installation construction is divided into two main steps: preparation before hoisting and hoisting. In the preparation before hoisting, the first step is to determine the hoisting point, when the integrality, symmetry and strength of the steel column meet the relevant standards, the construction personnel can choose the hoisting point according to the actual situation, and the second step is to carefully check the tightness and position of the bolts of the steel column, to determine whether the degree of tightness meets the relevant requirements, and whether the position is biased, etc., and if it is found to be not in line with the requirements, it should be immediately calibrated or replaced. Replacement. In the lifting construction, in the first steel column lifting before, first of all to choose the appropriate wire rope as an important tool for lifting, find the lifting should correspond to the position, the height and angle of the steel column lifting accurate control, steadily cut the steel column into the base cup, complete the fixed construction before you can release the hook. After completing the second steel column lifting in this way, the stability of the steel column in the horizontal plane can be ensured by installing inter-column support rods and the top of the column to ensure the stability of the steel column for the next step of the construction of good preparation.

(2) Temporary support installation construction points

In the construction of temporary installation, two important principles should be followed. One is the strength of the temporary support to meet the relevant requirements, the other principle is the height of the temporary support can be flexible with the construction of the actual adjustment, the construction. In general, the temporary support has standard section and non-standard section two kinds, through the standard section and non-standard section of the mutual combination of different heights to meet the construction requirements. In terms of the installation position of the temporary support, it is generally determined according to the actual situation of the steel structure construction of the plant, such as using the temporary support to pour the concrete foundation, acting as the appropriate height of the guardrail, etc. It should be noted that the temporary support can be used for the construction of the steel structure of the plant. It should be noted that whether the strength of the temporary support meets the relevant standards is very important, which will have an impact on the safety of the steel structure construction and the stability of the steel structure construction, so the strength of the temporary support should be ensured firstly during the construction of the temporary support.

(3) Construction Points of Truss Installation

Generally speaking, the main way of truss installation is segmental lifting and high altitude splicing, which has high technical requirements for the construction personnel and high requirements for the precision and accuracy of lifting. Therefore, in the actual construction process, it is necessary to formulate the construction program and construction steps of truss installation, select experienced staff to carry out construction according to the established construction program and construction process, and pay attention to the supervision of the construction and ensure the smooth progress of the truss installation. The construction supervision should be emphasized, and the cleaning of construction site should be paid attention to, so as to ensure the smooth progress of truss installation.

(4) Points of installation construction of roof of industrial plant

When the truss installation is completed, the roof of the industrial plant should be installed, in order to ensure the construction effect, the combination of roof frame and steel column should be added with appropriate amount of agent, and the construction personnel should determine the placement position of the roof frame, and then carry out the timely reinforcement construction in accordance with the determined placement position, when all the loose and tight bolts have completed the construction process, the bolts should be welded in accordance with the designed sequence, and then the other relevant components should be completed successively, and then the construction should be completed successively. Then successively complete the assembly and installation of other relevant components. In the process of plant roof installation, whether the roof position is determined accurately directly affects the construction effect, so we should pay enough attention to the installation position.

Conclusion

Compared with the traditional brick and concrete structure and reinforced concrete structure plant, steel structure plant has the advantages of high stability, good economic benefits and obvious environmental performance, and has been more and more widely used in industrial plants. In the process of steel structure installation of plant buildings, it is necessary to carry out scientific design and construction of each construction link and construction details, strictly require the construction quality and construction effect of each link, and constantly improve the construction quality of industrial large-span steel structure plant.