Abstract
Coupled core walls offer an efficient lateral load resisting system. Performance of coupled wall systems depends primarily on adequate stiffness and strength of coupling beams. Improvements in terms of constructability and performance are being explored as part of an ongoing study. A repairable or replaceable central "fuse" beam, where the inelastic deformations are concentrated, has been developed in an effort to protect the wall piers from local damage imparted by the coupling beams. A composite coupling beam utilizing an encased steel web plate is anticipated to facilitate construction of coupled core walls. Design methodologies for these systems were developed and evaluated. A summary of design methodologies along with measured responses is presented in this paper.
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