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How to distinguish heavy steel structure from light steel structure?

Time:[2022-6-27]  Hits:3787

There is indeed no uniform standard to determine the structure of heavy steel and light steel structures. Experienced designers or project managers often cannot fully understand, but we can comprehensively consider and judge some data:
1. The lifting weight of the workshop: greater than or equal to 25 tons, it can be regarded as a heavy steel structure.
2. Steel consumption per square meter: greater than or equal to 50KG/M 2. It can be regarded as a heavy steel structure.
3. The thickness of the steel plate of the main component is greater than or equal to 10MM, and the light steel structure is used less.

 


4. In addition, there are some reference values: such as cost per square meter, maximum component weight, maximum span, structural form, eaves height, etc. The above can provide empirical data when judging whether a plant is heavy steel or light steel. Of course, many buildings now have light steel and heavy steel. But some we can say with certainty are heavy steel: such as petrochemical plant facilities, power plant plants, large-span stadiums, exhibition centers, high-rise or super high-rise steel structures.
5. In fact, there is no heavy steel in the national specifications and technical documents. In order to distinguish light-duty residential steel structures, ordinary steel structures can be called ordinary steel. Due to the wide range of ordinary steel structures, which can include various steel structures, regardless of the size of the load, or even many contents of light steel structures, the technical regulations for light residential steel structures only stipulate some more specific contents according to their light characteristics, and the scope is limited to Single door frame.


6. Light steel is also a vague term, and there are generally two understandings. First, in the current "Code for Design of Steel Structures" (G**17-88), Chapter 11 "Light steel structures with round steel and small angle steel" refers to the use of round steel and smaller than L45*4 and L56*36*4 The light steel structure made of angle steel is mainly used for small structures that are not suitable for reinforced concrete structures when there is a lack of reinforced concrete structures. The other is the single-layer solid-web door rigid frame structure with light roof and light exterior wall (masonry exterior wall can also be used conditionally) stipulated in the Technical Specifications for Steel Structure of Single-layer Solid Web Door Houses. Lightweight here mainly means that the shell is made of lightweight materials. Since the former was quickly cancelled, the meaning of light steel now mainly refers to the latter.
7. It can be seen that the difference between light steel and heavy steel is not the weight of the structure itself, but the weight of the envelope material, but the concept of structural design.

 


Steel structure installation note:
The steel components are prefabricated and assembled on the steel platform according to the installation sequence and process requirements to ensure the welding quality.
The distance between the splicing seam of the section steel splicing flange plate and the splicing seam of the web plate should be greater than 200mm. The splicing length of the flange plate shall not be less than twice the width of the plate; the splicing width of the web shall not be less than 300mm and the length shall not be less than 600mm.
In order to facilitate welding and ensure the welding quality, according to the size of the construction drawing, group butt welding is performed on the steel platform on the ground for the steel plate on the column, beam, connecting plate, backing plate, and beam (beam).
The prefabricated steel components on the steel platform should not only be assembled according to the construction drawings and specifications, but also the process of on-site installation and changes in installation dimensions should be considered. (Polyurethane rock wool board, Polyurethane edge rock wool board, Metal curtain wall rock wool board, Metal curtain wall board, Color steel rock wool sandwich panel, Polyurethane color steel plate, Polyurethane sandwich panel, Polyurethane wall panel, Polyurethane roof panel, Polyurethane rock wool Cotton Sandwich Panel, Polyurethane Glass Wool Sandwich Panel, Polyurethane Edge Glass Wool Sandwich Panel, Polyurethane Panel PU Panel

Copyright:佛山市勝邦鋼結構有限公司 Foshan Shengbang Steel Structure Co., Ltd. Record Number:粵ICP備13078463號
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