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The steel structure is a structure mainly made of steel and is one of the main types of building structures. It is the most commonly used building structure for warehouses, workshops, garages, and aircraft hangars.
The characteristics of steel are high strength, lightweight, excellent overall rigidity, and strong deformability. Therefore, it is especially suitable for large-span, super-high and super-heavy buildings. Steel structures are steel beams, steel columns, steel trusses, and other components made of section steel and steel plates, and each component or part is connected by welding, bolts, or rivets.
1.PTH steel structure has good toughness, good plasticity, and uniform material.
Steel has high structural reliability, is suitable for bearing shock and dynamic loads, and has excellent seismic performance.
The internal structure of 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. 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 cross-section, lightweight, convenient for transportation, and installation, and is suitable for large spans and high heights.
2. The steel structure is heat-resistant.
When the temperature is lower than 150°C, the performance of the steel changes little. Therefore, the PTH steel structure is suitable for high-temperature workshops. When the surface of the structure is exposed to a high temperature of about 150°C, PTH will use thermal insulation panels for protection. In buildings with special fire protection requirements, the steel structure must be protected with refractory materials to improve the fire rating.
3. The corrosion resistance of steel structure is weak.
Especially in the environment of humid and corrosive medium, it is easy to rust. PTH steel structures must be de-rusted, galvanized or painted, and maintained regularly.
4. High degree of mechanization of steel structure manufacturing and installation.
Steel structural components are natural materials manufactured in a factory and assembled on-site. The factory-based mechanical manufacturing of PTH steel structural components has high precision, high production efficiency, fast on-site assembly, and a short construction period. The steel structure is the most industrialized.
5. High strength and shock resistance.
Compared with ordinary reinforced concrete structure, PTH steel structure has non-uniformity, high strength, rapid construction, good earthquake resistance, and a higher recovery rate. The strength and elastic modulus of steel is many times higher than that of masonry and concrete, so under the same load conditions, the weight of steel components is very light. From the point of view of damage, steel structure is a flexible damage structure, with large deformation expected in advance, danger can be found in advance, thereby avoiding this danger.
