Is the steel structure the main structure?
Release time:
2025-04-25
The core function of the main structure is to transfer loads and ensure overall safety. If the steel structure is only used for decoration or local reinforcement (such as adding a mezzanine), it does not have the function of the main structure.
Whether a steel structure belongs to the main structure needs to be judged according to its application scenario and function, which is mainly divided into the following two situations:
1. Situations that belong to the main structure Large buildings or industrial facilities In projects such as factories, high-rise buildings, bridges, and tower mast structures, steel structures are usually used as core load-bearing frames to bear upper loads and belong to the main structure.
For example, the steel columns and steel beams of a steel structure factory are connected by welding or bolts to form the main frame, which directly supports the overall stability of the building.
Laws and construction specifications According to building regulations, if a steel structure is used for the main frame (such as the skeleton of a high-rise building), its installation is strictly prohibited from being subcontracted and must be completed by the general contractor to further prove its main structure attributes.
2. Situations that do not belong to the main structure Subsidiary or secondary structure In buildings such as residential areas, steel structures may only be used for non-load-bearing parts such as stairs and canopies. Such situations belong to subsidiary structures and are not included in the scope of the main structure.
Functional distinction
The core function of the main structure is to transfer loads and ensure overall safety. If the steel structure is only used for decoration or local reinforcement (such as adding a mezzanine), it does not have the function of the main structure.
3. Summary of judgment basis
Key criteria: Whether it bears the main load and participates in the overall force system.
Authoritative advice: Refer to the design drawings and construction specifications to clarify the engineering role of the steel structure.
Conclusion: The steel structure belongs to the main structure in the load-bearing core parts (such as frames and large-span structures), but not in non-load-bearing or auxiliary structures.
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