Advantages and disadvantages of steel structure
1. Light weight of steel structure

Although the bulk density of steel structure is large, compared with other building materials, its strength is much higher than that of other building materials. Therefore, when the load and condition are the same, the steel structure is lighter than other structures, which is convenient for transportation and installation, and can span a larger span.

2, the plastic and ductility of the steel is good, so that the steel structure will not suddenly break because of accidental overloading or partial overloading. The toughness is good, so the steel structure is more adaptable to the dynamic load. These properties of steel provide sufficient assurance for the safety and reliability of the steel structure.

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

4 The steel structure is easy to make and easy to use in industrial production. The construction and installation period short steel structure is made up of various profiles, and it is easy to make. A large number of steel structures are made in a specialized metal structure factory, with high accuracy. The components made are transported to the site and assembled with bolts, and the structure is light. Therefore, the construction is convenient and the construction period is short. In addition, the steel structures that have been built are easily dismantled, reinforced or reformed.

5. The tightness and water tightness of the steel structure is better than that of the good steel structure.

6, the steel structure has good heat resistance, but the fire resistance is poor and the steel is heat-resistant and not resistant to high temperature. As the temperature rises, the strength decreases. When there is radiation heat around, the shielding measures should be taken when the temperature is above 150 degrees. If the structure temperature reaches more than 500 degrees in the event of a fire, it may collapse all instantaneously. In order to improve the refractory grade of steel structure, it is usually wrapped up with concrete or brick.

7, steel is easy to rust. Protective measures should be taken. Steel in wet environment, especially in corrosive medium, is easy to rust. It must be brushed or galvanized, and it should be regularly maintained during use.