Revolutionary Seismic Protection
Buckling Restrained Brace (BRB) is a revolutionary shock-absorbing product that combines the structural function of a support with the energy-dissipating capability of a damper. The outer sleeve provides restraint to the support core material, preventing buckling under compression while allowing yielding in both tension and compression.
- Superior energy dissipation capacity
- Stable hysteretic performance
- Symmetrical tension-compression behavior
- Proven in over 100 full-scale tests
How BRB Works
Ordinary braces buckle under compression, resulting in poor hysteretic performance under repeated loading. The Buckling Restrained Brace connects only the core plate with other structural components, with all loads borne by the core plate.
The outer sleeve and filling material work together to restrain the core plate from buckling under compression, allowing the core plate to yield in both tension and compression. This mechanism provides excellent hysteresis performance and reliable energy dissipation.
Key Advantages
BRB systems eliminate the significant difference in tensile and compressive bearing capacity found in ordinary supports. They possess the energy dissipation capacity of metal dampers while keeping the main structure within the elastic range.
The application of buckling restraint supports comprehensively improves the seismic performance of traditional support frames under moderate and large earthquakes, making them ideal for critical infrastructure protection.
Bolted Connection
The two ends of the Buckling Restrained Brace and the corresponding gusset plate are pre-drilled with screw holes, and high-strength bolts are used to connect each component.
Advantages
- High installation efficiency
- Low requirements for personnel
- Overall aesthetic appearance
- Moderate price point
Considerations
Multiple factors affect installation angle; error accumulation makes precision control challenging.
Welded Connection
The Buckling Restrained Brace is connected with the gusset plates at both ends directly by butt welds, providing maximum strength and reliability.
Advantages
- High installation flexibility
- Strong adaptability
- Economical price
- High fault tolerance rate
Considerations
Residual stress from welding requires consideration; demands high welder skill level.
Pinned Connection
The two ends of the Buckling Restrained Brace and the gusset plate are pre-drilled with round holes, with each side connected by a precision pin.
Advantages
- Highest installation efficiency
- Lower requirements for workers
- Most aesthetic overall appearance
Considerations
Highest cost; requires high precision; limited installation flexibility.
Embedded Parts
Insertion Type
Designed for concrete structures with insertion-type installation.
Opposite-Pull Type
Opposite-pull embedded parts for specific structural configurations.
Reinforcement Joint
Concrete structure reinforcement joint for retrofit applications.
Rigorous Testing Standards
Our BRB systems undergo extensive testing to ensure reliability and performance. We have successfully tested over 100 full-scale BRBs.