Rising ‌Steel structure

 ‌Steel structure‌ is a building structure with steel as the main load-bearing component. It has the remarkable characteristics of high strength, light weight, and fast construction speed. It is widely used in high-rise buildings, bridges, industrial plants and other fields. The following is its core introduction:‌

1. ‌Structural composition and characteristics‌

‌Material properties‌: Steel has high strength (compressive strength is more than 10 times that of concrete), light weight (low ratio of density to yield strength), good plasticity and toughness, and is suitable for bearing dynamic loads and seismic requirements.

‌Processing and connection‌: Most components are prefabricated in the factory, connected by welding, bolts or rivets, and can be quickly assembled on site.

‌Durability‌: Steel has poor heat resistance (insulation protection is required when the surface temperature exceeds 150℃), but good sealing and a recyclability of more than 90%, which meets the requirements of green buildings.

2. ‌Main types and applications‌

‌Steel frame structure‌: Suitable for high-rise buildings and office buildings, forming a space frame system through steel beams and steel columns.

‌Steel truss structure‌: used for large-span buildings such as gymnasiums and airport terminals, with a span of more than 100 meters.

‌Light steel structure‌: used for low-rise buildings (such as industrial plants), using light H-shaped steel and corrugated steel plates, easy to construct and strong bearing capacity.

3. ‌Advantages and Challenges‌ ‌Advantages‌: ‌High construction efficiency‌: Factory production of components and on-site assembly shorten the construction period by about 30%-50%.

‌Excellent seismic performance‌: Steel has good ductility and can absorb earthquake energy.

‌High spatial flexibility‌: No protruding beams and columns, suitable for complex shape design.

‌Challenges‌: Attention should be paid to fire protection (strength decreases at high temperatures) and regular maintenance (rust prevention treatment).

4. ‌Development status and trends‌ ‌Steel structures are widely used worldwide. China has entered a period of rapid development since the 2008 Beijing Olympics, and its technical maturity is in line with international standards. Future trends include the development of higher-strength steel, more efficient construction techniques, and greener designs (such as integrated wall systems).