1. The material has high strength and is lightweight
The steel used in steel structures has high strength and high elastic modulus. Compared with concrete and wood, the ratio of its density to yield strength is relatively low. Therefore, under the same stress conditions, the steel structure has a small component section, lightweight, easy to transport and install, and is suitable for large spans, high heights, and heavy loads. Structure.
2. Steel has toughness, good plasticity, uniform material, and high structural reliability.
Suitable to withstand impact and dynamic loads, and has good seismic resistance. The internal structure of steel is uniform and close to an isotropic homogeneous body. The actual working performance of the steel structure is relatively consistent with the calculation theory. Therefore, the steel structure has high reliability.
3. Steel structure manufacturing and installation are highly mechanized
Steel structural components are easy to manufacture in factories and assemble on construction sites. The factory’s mechanized manufacturing of steel structure components has high precision, high production efficiency, fast construction site assembly, and a short construction period. The steel structure is the most industrialized.
4. The steel structure has good sealing performance
Since the welded structure can be completely sealed, it can be made into high-pressure vessels, large oil pools, pressure pipelines, etc. with good air tightness and water tightness.
5. Steel structure is heat-resistant but not fire-resistant
When the temperature is below 150°C, the properties of steel change very little. Therefore, the steel structure is suitable for hot workshops, but when the surface of the structure is subject to heat radiation of about 150°C, it must be protected by heat insulation panels. When the temperature is between 300℃ and 400℃, the strength and elastic modulus of steel decrease significantly. When the temperature is around 600℃, the strength of steel tends to zero. In buildings with special fire protection requirements, the steel structure must be protected with refractory materials to improve the fire resistance rating.
6. Steel structure has poor corrosion resistance
Especially in environments with humid and corrosive media, they are prone to rust. Generally, steel structures need to be rust removed, galvanized, or painted, and must be maintained regularly. For offshore platform structures in seawater, special measures such as “zinc block anode protection” must be adopted to prevent corrosion.
7. Low carbon, energy saving, green and environmentally friendly, reusable
The demolition of steel structure buildings will produce almost no construction waste, and the steel can be recycled and reused.
Post time: Nov-22-2023