2025-01-16    173

　　The popularity of prefabricated steel structures has increased significantly compared to 20 years ago due to their unique advantages that other building materials lack. Let's explore the advantages of prefabricated steel structures.

　　1.Lightweight Nature of Prefabricated Steel Structures

　　The materials used in steel construction are lightweight yet highly strong, reducing the self-weight by approximately 30% compared to concrete buildings.

　　2.Rapid Construction Speed of Prefabricated Steel Structures

　　Prefabricated steel structures often utilize bolted connections. The advantages of bolted connections (without welding) include fast installation and convenient quality control during construction. Due to their structural characteristics, the construction period of steel structures is more than 50% shorter than that of prefabricated concrete (PC) structures.

　　3.Excellent Earthquake Resistance of Prefabricated Steel Structures

　　Elaborately crafted steel structures exhibit superior performance, with excellent earthquake resistance being one of their main advantages.

　　During the 8.1-magnitude earthquake in Mexico in 1985, the collapse rate of steel-framed buildings was significantly lower than that of concrete buildings. Similar results were observed in the aftermath of the 7.1-magnitude Kobe earthquake in Japan in 1995. In 2015, Tongji University conducted a full-scale experiment on a layered frame system with three stories, revealing that after experiencing an earthquake acceleration of 0.62g (equivalent to a magnitude 9 earthquake), apart from the seismic braces, the rest of the structure remained intact.

　　Therefore, steel structures offer advantages such as high strength, lightweight, excellent earthquake resistance, rapid construction speed, high degree of industrialization, and large effective floor area. Compared to other structural systems, the steel used in constructing steel buildings is recyclable. Additionally, for architectural designs pursuing unique creativity and shapes, steel structures are indispensable. Steel structures are one of the important means to showcase the beautiful landscape of buildings. Furthermore, steel structures are best suited for factory production, with assembly or welding on-site, ensuring the structural integrity of the building.