O-Shaped Buckling-Restrained Brace with Internal Filler

O-Shaped Buckling-Restrained Brace with Enhanced Load-Bearing Capacity via Internal Filler

This technology is an O-shaped buckling-restrained brace consisting of a hollow circular tube, a core member housed within the tube featuring end plates and a hollow hole, and a filling layer formed by an internal filler injected between the tube and the core to connect them as a single unit.

Conventional buckling-restrained braces typically use mortar as a filler, which makes it difficult to achieve both high load-bearing capacity and superior deformation capability.

By using an advanced internal filler instead of mortar to increase both load-bearing capacity and deformation capability, this technology can be applied to steel braced structures to improve resistance against external forces.

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Key Features:

• A hollow circular tube and a circular core member housed within it
• A core member featuring end plates at both ends for connection to steel structures and a polygonal hollow hole inside
• A filling layer created by injecting an internal filler into the space between the tube and the core, integrally connecting the inner surface of the tube with the outer surface of the core
• An adjustment structure formed on the end plates that is inserted into the hollow hole of the core to regulate expansion and contraction along the longitudinal direction

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