the construction of steel plate strengthened is economical and reasonable. Because of the rapid construction, the construction time is avoided or reduced, and the reinforcement material is saved. Compared with other reinforcement methods, the cost of reinforcement of beam and stick steel is greatly saved
1) steel plate reinforcement is durable and has proved that the quality of reinforcement works can be guaranteed, and the strength and rigidity of beams can meet the design requirements. The 30 year aging test of adhesives meets the requirements of durability. The structural test after strengthening with bonded steel proves that the design method of strength and rigidity is correct and reliable.
2) the construction of steel plate reinforced is fast. Under the premise of guaranteeing the quality of the reinforced beam, the construction task can be completed quickly, and the construction can be completed without stopping production without stopping production according to the requirements of business.
3) the construction of steel plate reinforced is simple and light, and compared with other reinforcement methods, the construction of beam and stick steel reinforcement is clean, simple and simple, and no wet work in the field. After the completion of the reinforcement, the appearance of the structure is not changed. It is relatively light and thin, and the weight of the beam will increase slightly. It will not cause any other components in the building to be interconnected.
4) steel plate reinforcement is flexible and adaptable. It can solve all kinds of problems related to production and life. The scheme of beam sticking steel plate is various, flexible and ingenious.
5) the construction of steel plate strengthened is economical and reasonable. Because of the rapid construction, the construction time is avoided or reduced, and the reinforcement material is saved. Compared with other reinforcement methods, the cost of reinforcement of beam and stick steel is greatly saved and the economic benefit is very high.
1) the limitation of the application scope of the steel plate reinforcement is not applicable to the beam strengthening of the plain concrete components (including the members of the longitudinal reinforced bar which is lower than the minimum reinforcement ratio stipulated in the current design code). The environmental temperature for its long-term use should not be higher than 60.
2) the field strength of reinforced concrete beams can not be less than C15, and the bonding strength of concrete surface should not be less than 1.5N/mm2.
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