Nonlinear Analysis Of Rc Frames With Y-eccentrically Brace

Eccentrically braced frame can provide high elastic stiffness and large inelastic energy dissipation capacity. The RC frame structures use the advantage of link beam brace to improve the rigidity and loading capacity of structures, through shear-yield of link beam, the brace realize to energy-dissipation and improve the seismic behavior of structures. Meanwhile, eccentrically brace was a kind of effective lateral force resisting system and had favourable prospect in development and application for earthquake-resistance of buildings. Because link beams are separated from framing cross beams, Y-eccentrically braced steel frame has more special characters than others. So the research of RC frames with Y-eccentrically brace is particularly important and necessary.In this paper, the nonlinear analysis of RC Frames with Y-eccentrically brace is conducted by the finite element softwave ABAQUS6.8-1. Besides focusing on mechanism, furthermore some relevant design parameters were analyzed respecttively, including length of link beam, height and thickness of web, width of flange, the length of node board, width of flange of brace, the axial compression ratio and the Reinforcement ratio of columus. The corresponding influence patterns of structural behaviours were obtained, such as the loading-carrying capacity, link beam failure mode, seismic ductility and stiffness of structure, which provided the references for relevant researchers and designers.