Six common strengthening measures for steel structure machining

Steel structure processing has been widely used in construction, its biggest characteristic is high strength, durable. Steel structure is usually reinforced during installation to ensure the strength and durability of steel structure.

1, prestressed tensioning

The weak parts of the structure are reinforced with high-strength cables to improve the overall bearing capacity, stiffness and stability.

2. Remove the parts that need to be strengthened or upgraded in the original structure

When the building is seriously damaged or the original bearing capacity is insufficient, it should be strengthened or updated on the foundation. In this case, temporary supports need to be installed to fully unload; Moreover, after unloading, the safety of the whole structure should also be ensured.

3. Simplify calculations

Additional support is added, the distribution of load is adjusted, the size of internal force is reduced, and the force displacement is carried out on the support of statically indeterminate structure to reduce its stress peak.

4, load strengthening

Refers to when the stress of the component (or joint) is less than 80% of the design strength, or the component is not seriously damaged (broken, deformed, bent, etc.). At this time, in order to increase the force of the new reinforcement rod, sometimes it must be temporarily unloaded. In addition, when reinforcing, pay attention to not affect the normal use of other components.

5, section reinforcement

Reinforced with steel in part or along the entire length of the parts to join them together to withstand.

6. Uninstall and strengthen

Used for serious structural damage, or components and joints in a high stress state, must temporarily reduce its load. For some structures that primarily carry live loads (such as crane beams, etc.), it is possible to limit the live load, which is equivalent to most of the unloading. Although the strength and performance of steel structure is far superior to other metal materials, but there are great improvements in safety and service life, so now many steel construction workers will reinforce the steel structure to ensure the quality of steel structure processing.