A steel structure is a type of construction engineering structure primarily made of carbon steel plates as the main material. It is widely used in steel structure buildings and metal structure workshops. The key characteristics of carbon steel plates include high tensile strength, lightweight, excellent rigidity, and strong deformation resistance, making them particularly suitable for large-span, ultra-tall, and heavy-load constructions.
A steel structure consists of components such as steel beams, steel columns, and steel trusses, fabricated from sections and carbon steel plates. These components are typically connected by welding, bolts, or rivets.
Features of Steel Structure：
1. High Reliability & Excellent Mechanical Properties
Carbon steel exhibits good plasticity and deformation capacity, with uniform material properties and high structural reliability.
It is ideal for withstanding dynamic loads and offers superior seismic resistance.
The isotropic nature of steel ensures that its real-world performance closely matches theoretical calculations, enhancing the reliability of steel structure buildings.
2. High Strength & Lightweight
Compared to concrete and timber, steel has a higher strength-to-weight ratio, allowing for smaller cross-sections and reduced structural weight.
This makes steel structures easier to transport and install, especially for long-span, high-rise, and heavy-load applications.
3. Superior Sealing Performance
Welded steel structures provide complete airtightness, making them suitable for pressure vessels, large storage tanks, and other applications requiring high sealing performance.
4. Heat Resistance but Not Fireproof
Below 150°C, carbon steel retains its mechanical properties.
Between 300°C–400°C, its strength and elastic modulus decrease significantly.
At around 600°C, steel loses almost all its load-bearing capacity.
Therefore, metal structure workshops or buildings with fire safety requirements must use fireproof insulation coatings.
5. Poor Corrosion Resistance
Steel structures are prone to rust in humid or corrosive environments.
Common protection methods include anti-rust coatings, hot-dip galvanizing, and regular maintenance.
For marine structures, sacrificial anode protection (e.g., zinc blocks) is often applied.
6. High Prefabrication & Assembly Efficiency
Steel structure components are manufactured in factories with high precision and automation, ensuring quality and efficiency.
On-site assembly is fast, significantly reducing construction time.
This makes steel structure buildings one of the most industrialized construction methods.
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Post time: May-21-2025
