Requirements for the use of steel in the construction of steel structure engineering

Steel structure engineering is a structural mainly made of steel, which is mainly composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates. Welding, bolt or rivet connection is usually used between components or parts, which is one of the main types of building structure. Because of its light weight and simple construction, it is widely used in large factories, bridges, venues, super high-rise buildings and other fields.

1. High strength

Steel structure engineering requires high tensile strength and yield point of structural steel. High yield point can reduce the section of components, so as to reduce weight, save steel and reduce cost.

2. Good plasticity

Because the steel structure has good plasticity, it can have obvious deformation before failure, so as to avoid the brittle failure of the structural.

3. Good impact toughness

The steel structure with good impact toughness can improve the dynamic load resistance of the structural and avoid cracking and brittle fracture.

4. Good combination of cold and heat

Steel is often processed at room temperature and has good cold working performance, which can ensure that there is no crack or brittle fracture during steel processing. It will not have a great impact on strength, plasticity and toughness due to processing.

5. Good weldability

Good weldability of steel structure means that the steel structure can obtain good performance under certain process and structural conditions after welding. Weldability is a measure of the hot workability of steel. Weldability can be divided into weldability in construction and weldability in use.

6. Durable

Durability refers to the service life of steel structure. What has a great impact on the service life of steel is the poor corrosion resistance of steel. The second is the decline of mechanical properties of steel structure engineering under long-term load, heavy load and dynamic load.