| Classification | Implementation methods and reinforcement principles | Advantages | Limitations | Application |
Reinforcement of reinforced concrete surface layer | The supporting formwork is cast in place or sprayed concrete, and a steel mixed layer is added to the outside of the component, reinforcing bars are added to increase the interface of the components. | Significantly improve the bearing capacity, ductility and rigidity, reliable effect, easy to control engineering quality and durability. | The construction period is long, the normal use of structure is restricted, and the wet environment is not good. | Wider range |
Reinforcement of reinforced concrete mortar with surface layer | Laying steel bar, fixing the steel mesh and the original components, layered plastering, and maintenance. | It can improve the integrity of components, simple construction, good effect and durability. | The addition of reinforcement is limited and the thickness of reinforcement surface is limited. | Reinforced brick columns, brick walls, etc |
Steel jacketing reinforcement | The outer package of the component is reinforced by section steel. According to the use of binder, it can be divided into two types: dry and wet. | The construction is convenient, and the seismic performance can be improved effectively. | Attention should be paid to the rust proof paint on the surface of the steel sleeve, or the surface protection with cement mortar. | It is used to reinforce reinforced concrete beams and columns, brick columns, brick chimneys, etc. |
Bond steel plate reinforcement | Using steel plate bonfing adhesive bonding steel plate and original component to improve bearing capacity, crack resistance and ductility of members. | The construction is convenient and fast, and the environmental conditions of the construction site are good. | The steel plate must be protected and the ambient temperature should not exceed 60 C. | General bending and tensile members subjected to static action
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| FRP wrap Strengthening | The carbon fiber sheet is adhered to the surface of the component with resin high performance composite material to improve the bearing capacity and strength of the structural member. | Carbon fiber elastic modulus and high strength, light weight, small volume, durability and corrosion resistance, easy to construct. | The environment can't be more than 60 degrees C | Concrete component, steel structure, wood structure |
Ngôn ngữ: Vietnamese
