Cyclic loading test on seismic performance of mid-splicing replaceable link

This paper introduces a novel mid-splicing replaceable link aimed at improving the seismic resilience of conventional eccentrically braced frame structures. The link is engineered as a shear link with remarkable energy dissipation capabilities and incorporates splicing features at mid-length, facilitating effortless disassembly and installation. By integrating holes in the web and web splicing plate of the link, plastic deformation within the energy dissipation zone is enabled, along with high-strength bolt slip energy dissipation. Cyclic loading tests performed on two distinct link designs exhibit stable and comprehensive hysteresis curves, showing exceptional seismic performance. Failure modes observed in the links predominantly involve web tearing and flange buckling. The ductility coefficients of the links range from 3.0 to 4.0, while the overstrength coefficients range from 1.63 to 2.10, with plastic rotations ranging from 0.13 to 0.15 rad. These findings signify that the link not only demonstrates favorable shear deformation capacities but also outstanding overstrength performance and plastic deformation capacities.