Link, Beam

Definition

That part of a beam in an eccentrically braced frame which is designed to yield in shear and/or bending so that buckling of the bracing members is prevented.

Purpose

Link beams are used in eccentrically braced frames (EBFs) to absorb and dissipate energy during seismic events, enhancing the structure's resistance to earthquake forces. They prevent the bracing members from buckling and help maintain structural integrity.

Examples of Use

• Seismic retrofitting: Upgrading existing buildings in earthquake-prone areas to improve their resilience.
• New construction: Designing buildings with EBF systems to ensure they can withstand seismic forces.
• Bridges: Enhancing the seismic performance of bridge structures.

Related Terms

• Eccentrically Braced Frame (EBF): A type of structural frame designed to absorb seismic energy through controlled deformation of link beams.
• Shear Force: A force that causes parts of a material to slide past each other in opposite directions.
• Buckling: The sudden failure of a structural member subjected to high compressive stress.

Notes

• Link beams must be designed and constructed to yield in a controlled manner during seismic events.
• Regular inspection and maintenance are necessary to ensure the effectiveness of link beams in seismic protection.
• Proper engineering analysis is required to determine the optimal design and placement of link beams in a structure.