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What are the structural characteristics of light steel structures?

  • 2019-07-30
  • 258

I. light weight of steel structure. Although the bulk density of steel structure is large, compared with other building materials, its strength is much higher, so when the load and conditions are the same, steel structure is lighter than other structures, easy to transport and install, and can span a larger span.

The plasticity and toughness of steel are good. Plasticity is good, make steel structure won't be broken suddenly because of accidental overload or local overload commonly. Good toughness makes steel structure more adaptable to dynamic load. These properties of steel provide sufficient guarantee for the safety and reliability of steel structure. 

Third, the steel is closer to homogeneous and isotropic bodies. The internal structure of steel is relatively uniform, very close to homogeneous and isotropic bodies, and is almost completely elastic within a certain stress range. These properties are consistent with the assumptions in the mechanical calculation, so the calculated results of the steel structure are more in line with the actual stress situation.

Four, steel structure manufacturing is simple, easy to use industrial production, construction and installation cycle is short. Steel structure consists of various profiles, easy to make. A large number of steel structures are manufactured in specialized metal structure manufacturers; High accuracy. The components are transported to the site for assembly, which are connected by bolts, and the structure is light, so the construction is convenient and the construction period is short. In addition, the completed steel structure is easy to remove, reinforce or transform.

Five, the sealing of the steel structure is good. The air tightness and water tightness of steel structure are better.

The heat resistance of steel structure is good, but the fire resistance is poor. Steel is resistant to heat but not to high temperature. As the temperature increases, the intensity decreases. When there is radiant heat around, above 150 degrees, shelter should be taken. If there is a fire and the temperature of the structure reaches above 500 degrees, it may collapse all at once. In order to improve the fire resistance of steel structures, it is usually wrapped in concrete or brick.

Seven, steel easy to rust, should take protective measures. Steel in the humid environment, especially in the corrosive medium of the environment easy to rust, must be painted or galvanized, and in use during regular maintenance.

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