| The structure of Semi-rigid frame with multi-ribbed stiffening steel plate shear walls is a new lateral force resisting structural system. With the merits of the traditional concrete covered buckling steel plate shear walls and welder stiffening steel plate shear wall structure, the embedded system board of this system adopts buckling structural measures with the new ribbed bolted mesh as the embedded system board, which can effectively overcome the concrete cover and welded stiffeners damage failure problems in advance, reduce the weight of the structure, eliminate the adverse effects caused by welding on an embedded board. At present, domestic and foreign research on this structure are relatively few.Firstly, the experimental research focused on the low cyclic loading test of the specimens GLRBS on Semi-rigid frame- ribbed stiffener buckling low yield point steel plate shear wall. The results indicated: Semi-rigid frame with ribbed stiffening low yield point steel plate shear wall provides good work performance, with the system which has a high level of ultimate bearing capacity, lateral stiffness, good ductility and energy dissipation; Bilateral ribbed can effectively inhibit the overall buckling of embedded board, improve the mechanical properties of the embedded board, significantly reduce the hysteresis curve of "pinching" phenomenon, improve the energy performance of the structure, effectively reduce the additional bending moment on the edge of the column embedded board, and improve ductility; Embedded board "lining effect" can effectively reduce the structure of its own rotational stiffness requirements of beam-column joints.Secondly, on the basis of experimental studies, hysteretic behavior, stress, defor-mation development and failure mechanisms of the ribbed stiffening steel wall was numerically analyzed. The result indicated: Bilateral ribbed stiffening structure can effectively improve the energy performance, the initial lateral stiffness and ultimate bearing capacity; Beam-column joints rotational stiffness influences the initial lateral stiffness of the structure delicately. With the decrease of rotational stiffness node, the structural energy performance improved significantly, meanwhile the ultimate bearing capacity decreased; Structural energy performance and ductility can be improved significantly by using low yield point steel embedded board; With the decrease of the embedded plate thickness ratio, the structural energy performance, initial stiffness and ultimate bearing capacity were improved significantly; However, the structure stiffness degenerated rapidly, ductility decreased; Side of axial compression ratio changes had little effect on the seismic performance.Lastly, a comprehensive analysis of impacts with finite element software on ribbed reinforced steel plate shear wall buckling performance by embedded plate thickness ratio ?, stiffness ratio affects the ribs ? and side columns ribbed elastic stiffness ?. The results indicated: when ? ?50, ribbed grid can effectively inhibit the overall buckling of the embedded board; the shear buckling stress of the embedded board can be improved effectively by using the proper side column elastic stiffness and rigidity than the ribs, meanwhile the mechanical properties of the embedded board can be improved. |
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