Abstract:In order to improve the mechanical property of the replaceable links in structural system with replaceable members, a novel type of the replaceable link with bolted end plate connection and end web stiffeners was proposed. The quasi-static test on two full-scale replaceable links was carried out and the finite element simulation analysis of the models was conducted using ABAQUS software to evaluate the influence of the stiffener configurations at the end of link flanges on the failure mode, bearing capacity, flange plastic strain. The test results show that all specimens yielded in shear, followed by two types of failure modes, i. e., web-to-stiffener weld tear and fracture at the flange-to-end plate welds, those of which showed a stable bearing strength and excellent energy dissipation behavior. Meanwhile, the specimen with end web stiffeners was effective in shifting plastic flange strains away from the flange-to-end plate welds to sustain ductile inelastic deformation and replaceability under cyclic loading. The finite element simulation results were in good agreement with the experimental results, which verified the validity of the finite element model. Feartures of the plastic strains of these modes indicated that five end stiffener configurations shifted flange plastic strains caused by link deformation away from the welds to strength the seismic performance. Finally, the proposed formula for the replaceable link with bolted end plate connection and end web stiffeners was recommended, and the feasibility of design method was verified.