Buckling restrained brace(BRB)

Shock Transmission Unit (STU)
Strip Seal Expansion Joint

Buckling restrained brace(BRB)

Buckling restrained brace(BRB)

The buckling restrained brace consists of steel core and casting, in which the steel core encased by bond preventing layer, the casting is made by full with concrete or reinforced concrete in the steel pipe. The casting wrapped around the steel core to prevent steel core buckling; the material of preventing layer is made by silicone grease, rubber and other composite material together, it is a thin film with a set thickness, is laid between the steel core and casting to ensure free axial deformation of steel core.

1-steel core; 2-casting encased by bond preventing layer; 3-BBR

Design principle

When ordinary brace occurs the pressure bar unstable, the bearing pressure is very low, the tension and compression are asymmetrical, and the hysteresis curve protects the area (energy consumption) irregularly. On the contrary, the buckling restrained brace can provide lateral restraint for the steel core, and the steel core does not undergo low-order compression buckling, and the tensile and compressive symmetry is good. The hysteresis curve of BRB has a large surrounding area, good regularity and stable energy consumption.

Ordinary brace device

BBR dissipate energy through the yield of the steel core

Different layout of the section view of the steel core

Quality control at BAOLI

BAOLI BRB should strictly meet the requirements of the design drawings, and the mechanical properties should conform to the EN15129 standard.

BAOLI BRB workshop

Twisting testing at Beijing University of Technology



Single diagonal type? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Double diagonal type


  • Quality assurance: Quality control from raw material to finished product.
  • On time delivery “No waiting around”.
  • Cost saving options “Getting you the best price”.
  • Small quantity acceptable “Every piece is valuable to us”.
  • Professional packing plan to save cost for customers, customers won’t suffer any problem.


Beijing western suburb auto parts city

Suqian city culture stadium

Urumuqi city No.16 middle shchool


Quotations are supplied on the basis of the types and numbers of the dampers required. We can also design if you proveded the follow information:

  • The use area, bridge or building;
  • Installation type;
  • Damper force and design displacement(the maximum displacement);

● Dampering coefficient and dampering exponent.

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