Compared with the structure of other materials, steel structure has the following characteristics:
First, the steel structure of light weight
Although the bulk density of steel structure is large, its strength is much higher than other building materials, so when the load and conditions are the same, the steel structure is lighter than other structures, easy to transport and install, and can span more Large span.
Second, the plasticity of steel and good toughness
Plastic, so that steel is generally not due to accidental overload or local overload and sudden rupture. Good toughness, then the steel structure of the adaptability of the dynamic load. These properties of steel to provide a safe and reliable steel structure to provide a full guarantee.
Third, the steel is closer to homogeneous and isotropic
The internal structure of steel is relatively uniform, very close to homogeneous and isotropic body, within a certain stress amplitude is almost completely elastic. These performance and mechanical calculations in line with the assumptions, so the steel structure of the calculation results more in line with the actual force situation.
Fourth, the steel structure is simple, easy to use industrial production, construction and installation cycle is short
Steel structure from a variety of profiles, making simple. A large number of steel structures are manufactured in specialized metal structure manufacturing plants; high precision. Made of components transported to the scene assembled, bolted, and the structure of light, so the construction is convenient, the construction period is short. In addition, the completed steel structure is also easy to disassemble, reinforce or modify.
Fifth, the steel structure of good sealing
Steel structure of the air tightness and watertightness better.
Sixth, the heat resistance of steel structure is good, but the fire performance is poor
Steel heat and not high temperature. As the temperature increases, the strength decreases. When there is radiant heat around, the temperature above 150 degrees, it should take shelter measures. If the event of a fire, the structural temperature of 500 degrees or more, it may all instantaneous collapse. In order to improve the fire resistance of steel structure, usually with concrete or brick it wrapped up. In this case,
Seven, Easy to rust steel, should take protective measures
Steel in the humid environment, especially in corrosive media environment easily corroded, must paint or galvanized, and should be regularly maintained during use.
