阻尼填充墙体外预应力自复位框架结构抗震性能数值分析OA

To promote the practical application of external prestressing self-centering frame(EPSCF)structure with infill walls,the damped infill wall(DIW)was applied to the EPSCF structure.Based on the Abaqus soft-ware,the analytical models for the EPSCF structure without walls,the EPSCF structure with the rigidly con-nected infill wall(EPSCF-RCW),and the EPSCF structure with the DIW(EPSCF-DIW)were established,respectively.Dynamic time-history analyses were performed to obtain the dynamic responses of each structure under frequent,fortification and rare earthquakes,respectively.The results show that the addition of the infill wall increases the structural stiffness of the EPSCF structure.Compared with the RCW,the DIW has a weaker enhancement effect on the stiffness of the EPSCF structure,reducing the influence of the infilled wall on the deformation capacity of the EPSCF structure.Under the rare earthquake,the maximum principal compress stress of the RCW is 3.93 MPa,which exceeds the design value of the masonry strength of 2.67 MPa,while that of the DIW is within the normal stress level.Under the same seismic excitation,the stress of the DIW is obviously smaller than that of the RCW,and the shear force of each floor of the EPSCF-DIW structure is smaller than that of the EPSCF-RCW.DIW is more suitable for the EPSCF structure than RCW,and the EPSCF-DIW structure has favorable seismic performance.