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Apr. 28, 2025
Prestressed steel wire has the following main functions in building structures:
1. Improve the bearing capacity of the structure
- In building structures, prestressed stress is generated in concrete structures by applying tension to prestressed steel wire. When the structure is subjected to external loads, the prestressed stress can offset part or all of the tensile stress generated by the external load, thereby improving the bearing capacity of the structure and enabling the structure to withstand greater loads.
2. Controlling structural deformation
- Prestressed steel wire can effectively control the deformation of components during the use stage of the structure. Under the action of load, the tension of the prestressed steel wire limits the tensile deformation of the concrete component, reduces the deflection of the component, maintains the normal use function of the structure, and improves the rigidity of the structure.
3. Enhance the crack resistance of the structure
- The tensile strength of concrete is low and cracks are prone to occur. The prestressed stress applied by the prestressed steel wire can offset the prestressed stress when the concrete is subjected to tensile stress generated by external loads, delay the appearance and expansion of cracks, improve the crack resistance of the structure, thereby protecting the steel bars inside the structure from corrosion and extending the service life of the structure.
4. Save materials and reduce deadweight
- Since the prestressed steel wire improves the bearing capacity, crack resistance and rigidity of the structure, the amount of concrete and steel can be reduced while meeting the same structural performance requirements, thereby reducing the deadweight of the structure, which is of great significance for large-span structures and high-rise buildings, and can reduce the foundation load and save foundation engineering costs.
5. Improve structural durability
- Prestressed steel wires put the concrete structure in a state of compression, reducing concrete cracks caused by tensile stress, reducing the risk of corrosion of the steel bars inside the concrete by moisture, oxygen and harmful chemicals in the external environment, improving the durability of the structure and extending its service life.
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