There are five commonly used reinforcement schemes for the demolition of load-bearing walls of brick-concrete structures: including replacement reinforcement method, additional support reinforcement method, bonding reinforcement method, prestressed reinforcement method and grouting reinforcement method.
In the renovation or repair of buildings, it is sometimes necessary to dismantle or reinforce the load-bearing walls of brick-concrete structures. Load-bearing walls are an important part of building structures, and their stability directly affects the safety and service life of buildings. Before carrying out demolition or reinforcement operations, it is necessary to understand the relevant technologies and methods to ensure the safety and effectiveness of the construction process.
The displacement reinforcement method is a commonly used method of reinforcement of load-bearing walls. This method is to remove part of the original wall and replace it with a higher strength and stiffness material to increase the bearing capacity and stability of the wall. Commonly used replacement materials include reinforced concrete, steel, etc.
Operation steps: 1) Determine the part of the wall that needs to be replaced, and measure its size and bearing capacity.
2) Remove the part of the original wall that needs to be replaced.
3) Install new wall materials, such as reinforced concrete or steel, etc.
4) Maintain and fix the new wall material to ensure that it is firmly connected with the original wall.
Materials required: reinforced concrete, steel, construction tools, etc.
The additional support reinforcement method is to add support on the basis of the original wall to enhance the stability and bearing capacity of the wall. This method is suitable for situations where there is a large deformation or crack in the wall.
Operation steps: 1) Install the support frame or support rod at the part of the wall that needs to be supported.
2) Fix and strengthen the support frame or support rod to ensure that it can effectively bear the weight and pressure of the wall.
3) Surface treatment of the support frame or support rod to make it harmonious with the original wall.
Materials required: support frame or support rod, fixings, surface treatment materials, etc.
The bond reinforcement method is to apply a high-strength adhesive to the surface of the original wall, and then paste the reinforcing material on the wall surface to increase the bearing capacity and stability of the wall. Commonly used reinforcing materials include glass fiber cloth, carbon fiber cloth, etc.
Operation steps: 1) Clean and polish the original wall surface to make its surface smooth, dry, and oil-free.
2) Apply a high-strength adhesive to the surface of the wall.
3) Paste the reinforcement material on the wall surface, making sure that the paste is firm, flat, and free of bubbles and gaps.
4) Maintain and fix the reinforcing material to make it closely integrated with the original wall.
The prestressed reinforcement method is a method to enhance the bearing capacity and stability of the load-bearing wall by pre-stressing. This method is usually suitable for situations where there is a large deformation or crack in the load-bearing wall.
Operation steps: 1) Install prestressed tendons or prestressed plates at the load-bearing wall parts that need to be reinforced.
2) Tension the prestressed tendon or prestressed plate to produce prestress.
3) Fix and strengthen the prestressed tendons or prestressed plates to ensure that they can effectively bear the weight and pressure of the wall.
4) Surface treatment of the reinforcement parts to make them harmonious with the original wall.
Materials required: prestressed tendons or prestressed plates, tensile equipment, fixings, surface treatment materials, etc.
The grouting reinforcement method is a method of enhancing the bearing capacity and stability of a load-bearing wall by injecting high-strength grouting material into its interior. This method is suitable for situations where there are cracks or voids in load-bearing walls.
Operation steps: 1) Clean and polish the load-bearing wall parts that need to be strengthened to ensure that the surface is smooth, dry, and free of oil stains.
2) Use specialized grouting equipment to inject high-strength grouting material into the interior of the load-bearing wall.
3) Maintain and fix the grouting part to ensure that it is closely integrated with the original wall.
4) Surface treatment of the reinforcement parts to make them harmonious with the original wall.
Materials required: high-strength grouting materials, grouting equipment, surface treatment materials, etc.
When dismantling and reinforcing the load-bearing wall of the brick-concrete structure, the relevant construction specifications and safety operation procedures must be strictly adhered to to ensure the safety and effectiveness of the construction process. At the same time, for different reinforcement schemes, it is necessary to select and adjust according to the actual situation to achieve the best reinforcement effect.
When selecting and implementing the demolition and reinforcement scheme of the load-bearing wall of the brick-concrete structure, the actual situation and needs of the building must be fully considered and the most suitable scheme must be selected. At the same time, the construction process must strictly comply with relevant building regulations and safety standards to ensure the safety of construction personnel and the stability of the building. During the construction process, the status of the load-bearing wall should be regularly inspected and monitored, and potential problems should be found and dealt with in a timely manner to ensure the long-term safety and stability of the building.