轴压比与剪跨比对带约束拉杆双层钢板-混凝土组合剪力墙抗震性能影响研究

为研究轴压比与剪跨比对带约束拉杆双层钢板-混凝土组合剪力墙抗震性能的影响，完成了5个缩尺模型试件的拟静力试验。研究结果表明：试件破坏时底部墙体钢板均受压屈曲，其中低剪跨比（剪跨比为1.0）试件出现典型的剪压破坏现象，而中高剪跨比（剪跨比为1.5~2.0）试件出现典型的压弯破坏现象；高轴压比、低剪跨比的带约束拉杆双层钢板-混凝土组合剪力墙仍具有良好的承载力、变形及耗能能力；增大轴压比可提高试件的承载力，但其变形和滞回性能有所降低；减小剪跨比，试件的承载力和刚度有较大幅度提高，耗能能力有所下降，而延性和承载力退化变化不明显。

Influence of axial compression ratios and shear-span ratios on seismic behavior of composite shear wall with double steel plates and infill concrete with binding bars

To further study the influence of axial compression ratio and shear-span ratio on the seismic behavior of composite shear wall with double steel plates and infill concrete with binding bars, cyclic testing was performed on five scaled specimens. The test result shows that the local buckling occurs at the lower part of the wall before failure, specimen with low shear-span ratio (λ=1.0) encounters shear compression failure while those with high shear-span ratios (λ=1.5~2.0) show a typical flexural failure.The test result indicates that the specimens also show good bearing capacity, deformability and energy dissipation under high axial compression ratio and low shear-span ratio. The bearing capacity of the specimens is increased with the increase of the axial compression ratio, however the deformation and hysteretic behavior are reduced. With the decrease of shear-span ratio, the bearing capacity and stiffness of the specimens are rapidly increased, energy dissipation decreased, while the ductility and strength deterioration are not significantly affected by shear-span ratio.