A REVIEW ON COUPLING BEAM TYPES IN COUPLED SHEAR WALL
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Volume Title: ICASGE2023
DOI: ICASGE-STA
Authors
Structural Engineering, Faculty of Engineering, Tanta University
Abstract
Coupled shear walls have been widely used in highârise buildings, since they can provide efficient lateral stiffness and energy dissipation capacity. The adjacent isolated walls in a coupled shear wall building are always connected by coupling beams throughout the height of the building. The coupling beams play a crucial role in dissipating energy and resisting lateral loads. Coupling beam must behave in a ductile manner, yield before the wall piers and exhibit significant energy dissipation characteristics. At first, Conventional RC coupling beams are studied with using diagonal reinforcement.
Conventional RC coupling beams, however, are prone to significant damage during earthquakes and may require costly post-event repair or replacement. To address this issue, researchers have proposed various alternative solutions such as replaceable steel coupling beams, steel corrugated plate coupling beams, and self-centering steel coupling beams with super elastic shape memory alloy bolts. Additionally, the concept of a "fuse" has been introduced in which the central part of the coupling beam is designed to dissipate energy and concentrate damage, allowing for easy replacement after an earthquake. These solutions aim to enhance the performance of coupling beams while minimizing post-event repair or replacement difficulties and expenses.
Conventional RC coupling beams, however, are prone to significant damage during earthquakes and may require costly post-event repair or replacement. To address this issue, researchers have proposed various alternative solutions such as replaceable steel coupling beams, steel corrugated plate coupling beams, and self-centering steel coupling beams with super elastic shape memory alloy bolts. Additionally, the concept of a "fuse" has been introduced in which the central part of the coupling beam is designed to dissipate energy and concentrate damage, allowing for easy replacement after an earthquake. These solutions aim to enhance the performance of coupling beams while minimizing post-event repair or replacement difficulties and expenses.
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