How To Strengthen The Steel Structure? 5 Ways You Need To Know

Increase the roof support:

For the large-span industrial plant, the steel structure roof is an important part of ensuring the safety of the operation inside the plant. Normally, the distance between the columns is set at 6-7 meters. If the span of the plant is too large, in order to ensure the safe operation of the factory, it is necessary to increase the support of the roof, improve the stiffness of the structural space, and improve the mechanical performance of the plant structure.

Adjust the dynamic performance of steel structure:

In some buildings that require dynamic performance of the structure, the addition of supports can adjust the natural vibration frequency of the structure and avoid the resonance phenomenon of the structure under dynamic load. For example, when there are dynamic loads such as frequent traffic of vehicles near some large bridge structures, the dynamic performance of the structure can be improved by adding supports.

Changing the load distribution:

Changing the concentrated load to multiple concentrated loads can change the member's bending moment graph.

For example, on a steel beam, if there is a large concentrated load, it can be dispersed into several smaller concentrated loads by setting up some auxiliary structures, so as to improve the stress of the steel beam.

Increase the middle support:

Increasing the middle support, change the simple support to continuous, can reduce the bending moment of the member. For example, adding intermediate support to a long-span steel beam makes it a continuous beam, which can reduce the maximum bending moment value of the steel beam and improve its bearing capacity.

By applying prestress to the steel structure members, the deformation of the members is opposite to the action of load, so as to improve the bearing capacity and crack resistance of the members. This is like giving a "preload" to a member before it is stressed, making it more resistant to load.

It is suitable for strengthening structural components such as beams, plates and trusses with long spans.

This method can effectively improve the bearing capacity and stiffness of the component, and also improve the mechanical performance of the component, but the construction technology is relatively high, requiring professional equipment and personnel.

Increase the strut:

Increase the strut, change the truss to the strut type frame, you can change the internal force distribution of the truss member. For example, the addition of struts in a simple triangular truss makes the force of the truss more uniform and improves its carrying capacity.

According to the shape and stress of the original member, the appropriate reinforcement form of increasing section can be selected.

For example, for steel beams, steel plates can be added to the flange plate or web plate; For steel columns, steel plates can be wrapped around them or materials such as Angle steel can be added.