Practical methods for strengthening steel structures

Steel structure is favored by many customers in the market for its unique advantages and characteristics. It is more valued for its advantages of fast construction, which can adapt to the needs of many residential accommodation. And people are more worried about the steel structure of the house is that its structure is as stable as normal houses. In fact, we do not need to worry. Although steel structure workshop are built quickly, it does not mean that there will be a loss of strength.

1. Common steel structure reinforcement methods:

With load reinforcement, construction is very convenient, also more economic. It is used when the stress of the component (or connection) is less than 80% of the steel design strength, or the component is not very damaged (damaged, deformed, warped, etc.). At this time, in order to make the newly strengthened member participate in the force, sometimes it is necessary to take temporary unloading measures for the strengthened member. In addition, the reinforcement should not affect the normal use of other components.

To strengthen the foundation, it is proposed to remove the parts that should be strengthened or updated from the original structure. When the structure is damaged seriously or the original section bearing capacity is too small, it must be used when the ground is strengthened or updated. Temporary support shall be provided to make the replaced member completely unloaded; At the same time, the safety of the whole structure after the replacement structure is removed must be guaranteed. Adding or strengthening the supporting system is also an effective way to strengthen the structural system.

2, concrete steel structure reinforcement details

When enlarging section is used to reinforce steel members, the selected section form should be favorable to the technical requirements of reinforcement and considering the existing defects and damages. The reinforcement of steel structure engineering needs to be based on the actual situation. In many cases, the quality requirements of different parts of the reinforcement are different, so the steel structure engineering should choose appropriate reinforcement methods for different parts of the reinforcement.

3, crack repair and reinforcement

When the structure of steel structure engineering is damaged by the crack of extensibility or brittle fracture tendency due to the repeated action of load and improper material selection, construction, manufacture and installation, it should be repaired. Under the pressure of different loads, a lot of steel members are damaged to different degrees, so steel structure engineering for large damage of steel members can be replaced, and then reinforcement, improve the overall quality of steel structure engineering.