Prestressed steel strand advantages and functions
Steel strands are widely used in many industries, and prestressed concrete steel strands entered the practical stage in the 1950s. However, the basic principle of prestressing is not only applicable to steel strands, but also has been applied in many aspects in ancient times. The iron hoop is a good example, which applies a certain pressure to the loose barrel wedge to form a barrel and withstand sufficient lateral water pressure. This is the early principle of prestressing. Today, the manufacturer of prestressed steel strand equipment will talk about the advantages and functions of prestressed steel strands.
1. Strong ability to withstand pressure
Prestressed steel strand has strong compressive resistance and is strong and durable. Steel strand has the advantages of low relaxation rate, high tensile strength, good stability and long insulation time. It is widely used in public engineering fields such as bridges, subways, railways, nuclear power, etc. In order to ensure the quality of the project, China has promulgated relevant standards to regulate the production, inspection, installation, use and maintenance of steel strand. In order to ensure product quality and avoid major safety accidents, fatigue performance tests must be carried out on steel strands before engineering application.
2. Improve the bearing capacity of bridges
High-strength low-relaxation prestressed steel strands are mainly used in prestressed reinforced concrete of bridges. Especially in bridges, the tension of steel strands is a force opposite to the load before the beam is loaded. Under the load, the load will first deflect the prestressed part, and then the beam force, thereby increasing the bearing capacity of the bridge, reducing the deadweight, and increasing the span of the beam.
3. Fix and reinforce buildings to prevent soil erosion
In addition, galvanized steel strands are used in power systems, galvanized steel strands are used in steel core aluminum strands, galvanized steel strands are used in suspension bridges, and bridges also use low relaxation prestressed steel strands and anchoring steel strands. For example, when we drive across the highway, we will find that there are such steel strands on both sides of the highway as a barrier, and we can often see the shadow of steel strands on bridges and water conservancy buildings. Due to its obvious role, it can be used as a foundation for buildings and as a supply in bridge structures. Its nature is to fix buildings, and steel strands are also used in many environmental protection projects to prevent soil erosion.
