Hainan steel reinforcement causes and several commonly used methods

In the 1950s and 1960s, the state began construction of a large number of reinforced concrete buildings and public buildings, office buildings. The house is still in use there are four or five decades of history, due to the improper use and maintenance or construction quality reasons, there is a problem or that many houses, some quite serious, endanger the structural safety, an urgent need for structural reinforcement.

Hainan Steel Structure reinforcement of several commonly used methods are:

Increasing section reinforcement method
This method of construction process is simple, adaptable for reinforcement beams, plates, columns, walls, and the general structure of the concrete. But a long time wet job site construction, have a certain impact on the production and life, and the reinforcement of the building after a certain clearance is reduced.

Replacement of concrete reinforcement method
After strengthening the Act does not affect the clearance of buildings for reinforced concrete strength low or seriously flawed beams, columns and other concrete load-bearing member of the compression zone. But also a long wet work site construction time.

Bonded outsourcing steel reinforcement method
The Act also known as wet encased steel reinforcement method, simple construction, smaller workload site does not allow a significant increase in cross-sectional dimensions of the original components suitable for use, but require a significant increase its carrying capacity of the concrete structure reinforcement. However, a large amount of steel, and should under no circumstances for the protection of more than 600 ℃ high temperature place.

Paste the steel reinforcement law
The rapid construction method, no wet job site or only a small amount of wet plaster and other operations, production and life is small, and no significant effect on the appearance of the original structure and the original clearance after reinforcement, suitable to withstand static force and in a healthy humidity environment or by flexural tensile reinforcement member. However, the reinforcement effect depends largely on the gluing process and operational level.

CFRP reinforcement method
The method of bonding steel plate having similar advantages, it also has a cloud decay, resistant to moisture, almost no increase in weight of the structure, durability, low maintenance costs, etc., applicable to all kinds of concrete structural members and the general nature of the force structures. But it requires special fire treatment.