External bonding and wrapping steel technology

The application principle of the bonded steel strengthening technology is relatively simple. A layer of steel plate is wrapped around the reinforced concrete structure, and the external steel plate participates in the force to improve the bearing capacity of the component. In the specific operation process, bonding processes such as anchor bolts and perfusion structural bonding steel glue can be used. The steel plate of the outer layer of reinforced concrete is effectively connected with the internal structure, so that the steel plate and the concrete member form a good whole, the force is more uniform, and the reinforced concrete structure is better reinforced.

By appropriately increasing the cross-sectional area of the structure, the technology can ensure that the performance of the structure is better improved, and will not affect the stability of the reinforced concrete structure, and the application effect is more obvious. When using the bonding and outer steel strengthening process, a large amount of strengthening materials are required. In addition, after the steel plate is bonded, a corresponding anti-corrosion protection layer needs to be installed to prevent the steel plate from corroding under the influence of the external environment and reduce the strengthening effect of the structural member.

Replacement concrete strengthening technology

The replacement concrete strengthening technology mainly refers to the replacement of the lower strength and lower hardness concrete in the structure with the higher strength and better performance concrete. To effectively beat the replacement part, after removing, pour the prepared concrete into the original structure, and finally obtain a reinforced concrete structure with higher strength. It is necessary to formulate solutions in advance based on the existing problems in concrete replacement construction.

Through the use of the strengthening technology, the integrity of concrete structural members can be ensured and the bearing capacity of the members can be improved. In the specific application, the process is relatively convenient to operate, the structure strengthening effect is significant, and the repouring of concrete has a particularly small impact on the stability of the building structure, and it is often used in the strengthening of defective structures.

strengthening technology with enlarged section

At this stage, in the strengthening design of reinforced concrete structures, the application effect of the strengthening technology of enlarged cross-section is more significant. By increasing the effective area of the section of the reinforced concrete member under bending, the section stiffness, bending performance and shear resistance of the reinforced concrete member under force are improved, which plays a role of strengthening and compensation. In the current construction projects, the enlarged section strengthening method is one of the important strengthening techniques to improve the bearing capacity of the structure. The designer should appropriately expand the area of the reinforced concrete structure according to the expansion area of the concrete, combined with the structural requirements of the reinforced concrete structure, to prevent the conflict between the expansion of the structural section and the performance of the structure.

To ensure the orderly and smooth progress of reinforced concrete structure strengthening construction, it is necessary to make preparations in advance for specific construction links. Corresponding support devices can be installed inside the reinforced concrete structure, and the upper load of the members to be reinforced can be effectively removed, and the interface painting work can be done to ensure that the concrete structure can be completely connected. The strengthening process is convenient to construct, simple to operate, and has a significant strengthening effect. Construction workers can carry out innovative strengthening work based on their previous work experience.

Composite fiber material strengthening technology

At the periphery of the reinforced concrete structure, a certain amount of material is re-bonded to ensure better strengthening of the structure. The bonding material is mainly composite fiber material. The composite fiber construction material used in this technology not only has good construction strength, but also has a simple construction operation process. Moreover, high-efficiency bonding can still be achieved in the bending position of the structural member, and the applicability is particularly strong. It is widely used by construction workers in the structural strengthening of the curved surface and the folded position. Because the weight of the composite fiber material is relatively small, its application to the strengthening of structural members has little effect on the weight of structural members, and the shape of reinforced concrete structures is also particularly small.

In the specific construction process, the construction workers apply a layer of epoxy resin adhesive on the surface of the structure and effectively bond the composite fiber materials prepared before along the direction of the structure. Corresponding bonding must be carried out along the direction perpendicular to the cracks to ensure that the composite fiber material and the reinforced concrete structure form a good whole.

The effective use of this strengthening technology can ensure that the structural force section is increased. By setting up corresponding protective barriers on the surface of the structure, the strength and durability of the reinforced concrete structure can be fully improved, including the structure's crack resistance and shear resistance. . From a practical point of view, because the composite fiber material itself is relatively strong, it has achieved significant strengthening effects in the strengthening of different types of reinforced concrete structures.

Concluding remarks

Through the comprehensive analysis of the control strategies of common methods in the strengthening design of reinforced concrete structures. Such as section enlargement, expansion strengthening technology, replacement concrete strengthening technology, composite fiber material strengthening technology, key points of application of bonded steel technology, etc., can ensure the effective use of reinforced concrete structure strengthening methods. For strengthening designers, it is necessary to select reasonable strengthening design schemes according to the shape characteristics of structural members, and optimize the strengthening process to truly achieve the goal of improving the stability of reinforced concrete structures.