该法是在构件外围包以型钢的加固方法, 具体可分为湿式外包钢加固法和干式

This method is a reinforcement method with a section steel wrapped around the component. It can be divided into a wet-type steel reinforcement method and a dry-type steel reinforcement method. Generally used for the reinforcement of concrete columns, beams, roof trusses, especially large structures and large span structures. <br>It is suitable for strengthening reinforced concrete beams, columns and brick columns, brick chimneys, etc., but the reinforcement process for round and curved members is relatively complicated. It has the advantages of convenient construction, less on-site workload, and can effectively improve the seismic performance of components. Its advantages are convenient construction, less on-site workload, and reliable stress. The disadvantage is that the amount of steel used is large, and the cost of reinforcement and maintenance is high. When chemical grouting is used to reinforce steel, the surface temperature of the section steel should not exceed sixty degrees; when the environment has corrosive media, there should be reliable protective measures.

The method is the reinforcement method of the component peripheral package type steel, which can be divided into wet-type outsourced steel reinforcement method and dry-type outsourced steel reinforcement method. Generally used for concrete columns, beams, roof frames, especially large structures and large-span structures for reinforcement.<br>It is suitable for reinforced reinforced concrete beams, columns and brick columns, brick chimneys, etc., but the reinforcement process of round and curved components is relatively complex. It has the advantages of convenient construction, low on-site workload, can effectively improve the seismic performance of components, its advantages are convenient construction, less on-site work, reliable force. The disadvantage is that the amount of steel is large, the cost of reinforcement and maintenance is higher. When chemical grout is used to outsource steel reinforcement, the surface temperature of the type steel should not exceed 60 degrees, and there should be reliable protective measures when the environment is corrosive.

The method can be divided into two methods: the wet method and the dry method. It is generally used for the reinforcement of concrete columns, beams and roof trusses, especially for large structures and long-span structures.<br>It is suitable for strengthening reinforced concrete beams, columns, brick columns, brick chimneys and so on, but for circular and curved components, the strengthening technology is relatively complex. It has the advantages of convenient construction, less on-site work and effective improvement of seismic performance of components. Its advantages are convenient construction, less on-site work and reliable stress. The disadvantage is the large amount of steel and the high cost of reinforcement and maintenance. When chemical grouting is used for reinforcement, the surface temperature of profile steel shall not exceed 60 ℃; when the environment has corrosive medium, reliable protective measures shall be taken.<br>