Huawei Suzhou Industrial Park

　　Steel structures are structures made of steel materials, and they are one of the main types of building structures. The structures are mainly composed of components such as steel beams, steel columns, and steel trusses made of steel sections and steel plates, and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The components or parts are usually connected by welds, bolts, or rivets. Because of their light weight and simple construction, they are widely used in large factories, venues, and super high-rise buildings. Steel structures are prone to rust, and general steel structures require derusting, galvanizing, or painting and require regular maintenance.
　　1. High material strength, light weight
　　Steel has high strength and high elastic modulus. Compared with concrete and wood, its ratio of density to yield strength is relatively low. Therefore, under the same stress conditions, the cross-section of steel structure components is small, the self-weight is light, and it is easy to transport and install. It is suitable for structures with large spans, high heights, and heavy loads.
　　2. Steel has good toughness and plasticity, uniform material, and high structural reliability
　　Suitable for withstanding impact and dynamic loads, it has good seismic performance. The internal structure of steel is uniform and close to an isotropic homogeneous body. The actual working performance of steel structures is more consistent with the calculation theory. Therefore, steel structures have high reliability.
　　3. Steel structure manufacturing and installation have a high degree of mechanization
　　Steel structure components are easy to manufacture in factories and assemble on site. Factory mechanized manufacturing of steel structure components has high precision, high production efficiency, fast on-site assembly speed, and short construction period. Steel structure is a highly industrialized structure.
　　4. Steel structures have good sealing performance
　　Because welded structures can be completely sealed, they can be made into high-pressure containers, large oil tanks, and pressure pipelines with good air tightness and water tightness.
　　5. Steel structures are heat-resistant but not fire-resistant
　　When the temperature is below 150℃, the properties of steel change very little. Therefore, steel structures are suitable for hot workshops, but when the surface of the structure is subjected to thermal radiation of about 150℃, heat insulation plates should be used for protection. When the temperature is between 300℃ and 400℃, the strength and elastic modulus of steel decrease significantly, and when the temperature is around 600℃, the strength of steel tends to zero. In buildings with special fire protection requirements, steel structures must be protected with fire-resistant materials to improve fire resistance.
　　6. Steel structures have poor corrosion resistance
　　Especially in humid and corrosive environments, it is easy to rust. General steel structures require derusting, galvanizing, or painting, and require regular maintenance. For offshore platform structures in seawater, special measures such as "zinc block anodic protection" should be used to prevent corrosion.
　　7. Low-carbon, energy-saving, environmentally friendly, and reusable
　　The demolition of steel structure buildings will hardly produce construction waste, and steel can be recycled and reused.