1. High material strength and light weight
Steel has high strength and elastic modulus. Compared with concrete and wood, the ratio of density to yield strength is relatively low. Therefore, under the same stress conditions, the component section of steel structures 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 load-bearing capacity.
2. Steel has toughness, good plasticity, uniform material, and high structural reliability
Suitable for withstanding impact and dynamic loads, with good seismic performance. The internal organizational structure of the steel is uniform, almost isotropic and homogeneous. The actual working performance of the steel structure is in line with the theory of computation. So the steel structure has high reliability.
3. High degree of mechanization in steel structure manufacturing and installation
Steel structural components are easy to manufacture in the factory and assemble on the construction site. The factory's mechanized manufacturing of steel structural components has high precision, high production efficiency, fast assembly speed on site, and short construction period. Steel structure is the most industrialized type of structure.
4. Good sealing performance of steel structure
Due to the welding structure being able to achieve complete sealing, it can be used as high-pressure vessels, large oil pools, pressure pipelines, etc. with good airtightness and water tightness.
5. Steel structure is heat-resistant but not fire-resistant
When the temperature is below 150 ℃, there is little change in the properties of the steel. Therefore, steel structures are suitable for hot workshops, but when the surface of the structure is subjected to thermal radiation of around 150 ℃, insulation boards should be used to protect it. When the temperature is between 300 ℃ and 400 ℃, the strength and elastic modulus of the steel significantly decrease, and when the temperature is around 600 ℃, the strength of the st