Prefab exhibition hall steel car showroom steel Structures metal construction building

The comprehensive project and process planning cost of the steel structure metal building steel structure department in the prefabricated exhibition hall is relatively good, and the design task is relatively heavy. In addition, its cost is not high and it requires a lot of manpower, making steel structure design difficult. Therefore, the design institute is not good at accepting such tasks. This has led to some design units contracting out the design of building structures due to a lack of experience in steel structure design. However, if the design qualifications of the contracting units are insufficient and the current design market in the construction industry is chaotic, it will have a significant impact on the quality of steel structure design.

In addition, without an accurate and effective supervision mechanism and targeted laws and regulations to regulate it, accidents are prone to occur, and the consequences are very serious.

The commonly used reinforcement methods for steel structures are as follows:

1. Pre stressing cable method:

Introduce the prestressed cable method, using cables to increase the weak links of the structure or improve the overall bearing capacity, stiffness, and stability of the structure.

2. Change the calculation chart:

Introducing changes to the calculation diagram, adding additional supports, adjusting load distribution, reducing the internal force level and force displacement of statically indeterminate structural supports, and reducing stress peaks.

3. Section reinforcement method:

Cross section reinforcement method is to use steel to reinforce components or along their entire length, and connect them into a whole to withstand a common force.

4. Remove the parts that need to be reinforced or repaired from the original structure:

When the structure is severely damaged or the original section bearing capacity is too small, it needs to be used for ground reinforcement or renewal. At this point, temporary support is required to fully unload the replaced components. At the same time, the stability of the entire structure is required after the replaced structure is removed.

5. Unloading steel bars:

Unloading steel bars is suitable for components and connections with significant structural damage or good stress conditions, and requires temporary reduction of their load. For some structures that mainly bear moving loads, such as crane beams, the movable load can be limited, which is equivalent to most unloading.

6. Reinforcement under load:

When the stress of the component (or connection) is less than 80% of the design strength of the steel, or when the component is not severely damaged (damaged, deformed, warped, etc.), use loading steel bars. At this point, in order to allow the newly reinforced components to participate in stress, it is sometimes necessary to take temporary unloading measures on the reinforced components. In addition, during the reinforcement process, attention should be paid not to affect the normal use of other components.