steel structure with good material and high strength

1. Steel structure material has high strength and light weight.

Steel has high strength and high elastic modulus. Compared with concrete and wood, the ratio of density to yield strength is relatively low. Therefore, under the same stress conditions, the member section is small, the weight is light, the transportation and installation are convenient, and it is suitable for structures with large span, high height and heavy load.

2. The steel structure has good toughness and plasticity, uniform material and high structural reliability.

It is suitable for bearing impact and dynamic load and has good seismic performance. The internal structure of steel is homogeneous and nearly isotropic. The actual performance is consistent with the calculation theory. Therefore, the reliability is high.

3. Manufacturing and installation are highly mechanized.

Components are easy to manufacture in the factory and assemble on site. The factory manufactures parts mechanically, with high precision, high production efficiency, fast assembly speed and short construction period. Highly industrialized structure.

4. Good sealing performance

Because the welded structure can be completely sealed, it can be made into high-pressure vessels, large oil pools, pressure pipes, etc. with good air and water tightness.

5. Heat resistance and fire resistance

When the temperature is lower than 150, the property of steel changes little. Therefore, it is suitable for high-temperature workshops, but when the steel structure surface is exposed to thermal radiation of about 150, it should be protected with heat insulation plates. When the temperature is 300-400, the strength and elastic modulus of the steel decrease significantly. When the temperature is around 600, the strength of steel tends to zero. In buildings with special fire protection requirements, refractory materials shall be used for protection to improve the fire resistance performance.

6. Poor corrosion resistance

Especially in the humid and corrosive environment, it is easy to rust. Generally, rust removal, galvanization or coating are required, and regular maintenance is also required. For offshore platform structures in seawater, special measures, such as zinc blocks and protection, shall be taken to prevent corrosion.

7. Low carbon, energy saving, environmental protection and reusable.

Demolition of buildings will hardly produce construction waste, and steel can be recycled.