Steel structures are mainly composed of steel and are one of the main types of building structures.
The structure is mainly composed of steel beams, steel columns, steel trusses and other components, usually connected by welds, bolts or rivets. Due to its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings and other fields.
The characteristics of steel are high strength, light weight, good overall stiffness, and strong deformation ability, making it particularly suitable for constructing large-span, ultra-high, and overweight buildings; The material has good uniformity and isotropy, making it an ideal elastic body that conforms to the basic assumptions of general engineering mechanics; The material has good plasticity, toughness, large deformation, and can withstand good dynamic loads; Short construction period; High degree of industrialization and mechanization. High strength steel should be studied for steel structures to greatly improve the yield point strength. New types of steel such as H-beams (also known as wide flange steel), T-beams, and pressure steel plates should be rolled to meet the needs of large-span structures and super high-rise buildings.
In addition, there is also a non thermal bridge light
steel structure system, which is not energy-efficient for the building itself. This technology utilizes clever special connectors to solve the problem of cold and hot bridges in buildings; The small truss structure allows cables and upper and lower water pipes to pass through walls, facilitating construction and decoration.
When the steel structure is damaged, the problem should be immediately discovered and resolved.
The main factors causing damage to steel structures are:
1. Insufficient structural bearing capacity is caused by load changes, expired services, and changes in specifications and regulations.
2. Due to various accidents, components may deform, twist, become disabled, or sink, resulting in weakened cross-sections, warped rods, and cracked connections.
3. Temperature differences cause deformation, cracking, and warping of components or connections.
4) The cross-section of steel structural components is weakened due to chemical and electrochemical corrosion.
5. Other factors include design, production, construction errors, and illegal use and operation during the service period.
There are three main reinforcement techniques for steel structures:
1. Section reinforcement method: Steel reinforcement is used locally or along the entire length of the component to connect it as a whole and allow it to bear the same force.
3. Change the calculation diagram: add additional support, adjust the load distribution, reduce the internal force level, force the displacement of the hyperstatic structure support, and reduce the peak stress.
3. Pre stressing cable method: using high-strength cables to reinforce weak links in the structure, or to improve the overall bearing capacity, stiffness, and stability of the structure.
We should take corresponding measures for possible problems in steel structure engineering. In addition, it is also very important to find steel manufacturers and process teams with guaranteed quality.
