What are the characteristics of steel structure buildings?

1. High strength and light weight Steel has high strength and high elastic modulus. Compared with concrete and wood, the ratio of steel density to strength is lower, so under the same stress conditions, the steel structure has a small cross-section and light weight, which is more convenient for transportation and installation. Structure. 2. Good toughness and high reliability Steel is suitable for bearing impact and dynamic loads, and has excellent seismic performance. Its internal organizational structure is uniform, close to isotropic homogeneous body. The actual work performance is more in line with the calculation theory. Therefore, the reliability of the steel structure is high. 3. High degree of mechanization Steel structural components are easy to manufacture in factories and assemble on site. The factory mechanized manufacturing of steel structure components has high precision, high production efficiency, fast assembly speed and short construction period. Steel structure is the most industrialized structure. 4. Good sealing performance of steel structure Since the steel structure is a welded structure, it can be completely sealed and made into high-pressure containers, large oil pools, pressure pipes, etc. with good air-tightness and water-tightness. 5. The steel structure is not heat-resistant and refractory. When the temperature is below 150 °C, the properties of the steel change very little. Therefore, the steel structure is suitable for hot workshops, but when the surface of the structure is exposed to heat radiation of about 150 ° C, it should be protected by a heat insulation board. When the temperature is between 300°C and 400°C, the strength and elastic modulus of the steel decrease significantly, and when the temperature is around 600°C, the strength of the steel tends to zero. In buildings with special fire protection requirements, refractory materials must be used for protection to improve the fire resistance level. 6. Poor corrosion resistance Steel is easy to rust in wet and corrosive environments. Generally, steel needs to be derusted, galvanized or painted, and regularly maintained. For offshore platform structures in seawater, special measures should be taken to strengthen corrosion resistance. 7. Green and environmental protection The demolition of steel structure buildings will hardly produce construction waste, and the steel can be recycled and reused, which is very environmentally friendly.