My family is going to build a house. Is it better to use a steel structure or a square steel structure?
Families should still use reinforced concrete when building houses.
The steel structure is good, it is light in weight and can be disassembled and used multiple times, but it has poor anti-rust function.
Steel structure characteristics
1. High material strength and light weight
Steel 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, light weight, easy transportation and installation, and is suitable for large spans, high heights, and heavy loads. structure.
2. Steel has toughness, good plasticity, uniform material, and high structural reliability
It is suitable for withstanding impact and dynamic loads, and has good earthquake resistance. The internal structure of steel is uniform and close to 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 structure 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 short construction period. Steel structure is the most industrialized structure.
4. The steel structure has good sealing performance
Because the welded structure can be completely sealed, it can be made into high-pressure vessels, large oil pools, and pressure vessels with good air tightness and water tightness. Pipes etc.
5. Steel structures are heat-resistant but not fire-resistant
When the temperature is below 150°C, the properties of steel change very little. Therefore, steel structures are suitable for hot workshops, but when the surface of the structure is subject to heat radiation of about 150°C, heat insulation panels must be used to protect it. 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 structures have 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, and reusable
The demolition of steel structure buildings will produce almost no construction waste, and the steel can be recycled and reused.