Knowledge on building reinforcement after a fire!

The reinforcement of various building components has different characteristics:

Column:

Column reinforcement is generally carried out by placing a trap, and the size of the trap should be selected to ensure sufficient space for additional steel bars and smooth pouring of concrete. The trap is mostly made into a template, and when the column is high, it can be made in sections. During reinforcement, all damaged and loose concrete should be carefully removed to ensure that there are no internal cracks in the column. If necessary, safety measures such as adding brackets should be taken. The reinforcement of columns should also place additional steel bars according to stress requirements, using fine steel bars as stirrups and arranging them with a high density.

Liang:

Especially for slab beams, they are often burned on the lower side, indicating that fire damage mainly occurs in the tensile zone. Due to the peeling of the concrete layer, the steel bars are often exposed, and necessary additional steel bars should be added during reinforcement. After removing the loose and damaged concrete layer, place the additional reinforcement on the beam to ensure good anchoring of the additional reinforcement; The reinforcement of beams should prioritize the use of sprayed concrete.

There may be two situations on the board: one is that the concrete cover cannot be maintained; The second issue is that the steel bars below may be exposed, and in some places, there may be detachment between the concrete and the steel bars without any connection. In both cases, high attention should be paid to the strength of the steel bars, and sufficient additional steel bars should be provided. The reinforcement of other building components such as masonry should also be carried out in a similar manner.

Building reinforcement is an emphasis on safety. Today, we will focus on how to reinforce a building after a fire? In fact, we still need to handle the serious damage according to the specific situation on site, either by demolishing and rebuilding, or partially reinforcing. The above principles can be applied to this situation as appropriate.

The reinforcement of various building components has different characteristics:

Column:

Column reinforcement is generally carried out by placing a trap, and the size of the trap should be selected to ensure sufficient space for additional steel bars and smooth pouring of concrete. The trap is mostly made into a template, and when the column is high, it can be made in sections. During reinforcement, all damaged and loose concrete should be carefully removed to ensure that there are no internal cracks in the column. If necessary, safety measures such as adding brackets should be taken. The reinforcement of columns should also place additional steel bars according to stress requirements, using fine steel bars as stirrups and arranging them with a high density.

Liang:

Especially for slab beams, they are often burned on the lower side, indicating that fire damage mainly occurs in the tensile zone. Due to the peeling of the concrete layer, the steel bars are often exposed, and necessary additional steel bars should be added during reinforcement. After removing the loose and damaged concrete layer, place the additional reinforcement on the beam to ensure good anchoring of the additional reinforcement; The reinforcement of beams should prioritize the use of sprayed concrete.