Characteristic Performance of Steel Structure Building

The characteristics of steel are high strength, light weight, good overall rigidity, and strong resistance to deformation. Therefore, it is particularly suitable for the construction of large-span, super-high and super-heavy buildings; the material has good homogeneity and isotropy, which is ideal for elasticity. The structure is most in line with the basic assumptions of general engineering mechanics; the material has good plasticity and toughness, can have greater deformation, and can well withstand dynamic loads; the construction period is short; its industrialization degree is high, and it can be specialized production with a high degree of mechanization.

Features of steel structure building:

1. High material 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 steel structure has a small section and light weight, which is convenient for transportation and installation. It is suitable for large spans, high heights, and heavy load-bearing Structures.

2. Steel toughness, good plasticity, uniform material, high structural reliability

It is suitable for bearing impact and dynamic load and has good seismic performance. The internal structure of the steel is uniform, close to an isotropic homogeneous body. The actual working performance of the steel structure is more in line with the calculation theory. Therefore, the steel structure has high reliability.

3. High degree of mechanization of steel structure manufacturing and installation

Steel structural components are easy to be manufactured in factories and assembled on site. Factory mechanized manufacturing of steel structural components has high precision, high production efficiency, fast site assembly and short construction period. The 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, pressure pipes, etc. with good air-tightness and water-tightness.

5. Steel structure is heat-resistant and not fire-resistant

When the temperature is below 150°C, the properties of the steel change 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 ℃, 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 is significantly reduced, and when the temperature is about 600°C, the strength of the steel tends to zero. In buildings with special fire protection requirements, the steel structure must be protected by refractory materials to improve the fire resistance level.

6. Poor corrosion resistance of steel structure

Especially in the environment of humid and corrosive medium, it is easy to rust. Generally, steel structures need to be dusted, galvanized or painted, and regularly maintained. For offshore platform structures in seawater, special measures such as "zinc block anode protection" are required to prevent corrosion.

7. Low-carbon, energy-saving, environmentally friendly, and reusable

The demolition of steel structure buildings hardly produces construction waste, and steel can be recycled and reused.

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