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Steel structure is to use steel as the main body of the structure. Steel structure is one of the most important types of engineering structures. Steel is characterized by high strength, light weight, good overall stiffness and strong deformation ability, so it is especially suitable for building large-span and extremely high, lightweight buildings. Steel columns, steel pipes and other components are made of channel steel. The steel structure is completed by welding, screws or rivets between each member.
Characteristics of steel structure
a. Construction steel with high ductility, good plasticity, symmetrical material, high structural stability, suitable for bearing impact and dynamic load. It is a good seismic material. The practical performance of steel structure accords with the calculation theory.
b. Steel structure building materials high strength, light weight and bolt strength is relatively high. The hardness to tensile strength ratio is relatively low compared to concrete and wood. Therefore, in the same bearing environment, steel structural materials are conducive to transport and installation. Suitable for large span, high relative height and heavy bearing structure.
c. Steel structural materials are resistant to high temperature but be not fireproof. When the temperature is below 150℃, the property of construction steel changes little. Therefore, steel structure is suitable for thermal production workshop. However, when the temperature is higher than 150 ° C, the steel structure should be maintained with insulation materials. When the temperature is between 300℃ and 400℃, the bolt strength decreases obviously. At 600℃, the strength of construction steel tends to zero. In the construction of buildings with special fire safety requirements, it is necessary to use fire-resistant and heat-preservation materials for maintenance, to improve the fire rating of steel structure buildings.
d.The production, manufacture and assembly of steel structure are highly mechanized. It is convenient to assemble steel structure members in factory and construction site. The automatic production of steel structure components in factory machinery has higher precision and productivity. The construction site assembly speed is faster and the construction period is shorter. Steel structure is one of the most industrialized structures.
