双波纹钢板混凝土组合剪力墙抗震性能试验研究

为研究钢板类型、墙体连接件、轴压比以及剪跨比对双波纹钢板混凝土组合剪力墙抗震性能的影响，设计并完成了15个双钢板混凝土组合剪力墙（13个波纹钢板试件、2个平钢板试件）的拟静力试验，观察了试件的破坏过程，获取了应变分布数据，分析了各变化参数对双钢板混凝土组合剪力墙抗震性能指标的影响规律。试验结果表明：与横向波纹双钢板混凝土组合剪力墙相比，竖向波纹双钢板混凝土组合剪力墙的承载力更高，承载力及刚度退化更为缓慢，延性更好；在承载力接近的情况下，双波纹钢板混凝土组合剪力墙的延性与耗能均显著优于平钢板的；设置连接件导致双钢板混凝土组合剪力墙的初始刚度降低，使其破坏阶段的承载力退化减缓，且小剪跨比时设置连接件可有效提升双钢板混凝土组合剪力墙的承载力和延性，防止其发生面外破坏；试验中增大轴压比可显著提升双钢板混凝土组合剪力墙的承载力、初始刚度和耗能能力，但双钢板混凝土组合剪力墙的承载力及刚度退化速率增快，延性变差；增大剪跨比将显著降低双钢板混凝土组合剪力墙的承载力和初始刚度，对延性和耗能能力影响并不显著；采用全截面塑性理论进行双波纹钢板混凝土组合剪力墙正截面承载力计算，试验结果与计算值吻合良好。

Experimental study on seismic behavior of double-skin corrugated plates and concrete composite shear wall

In order to study the influence of steel plate shape, connector, axial compression ratio, and shear span ratio on the seismic behavior of double-skin corrugated plates and concrete composite shear walls, 15 specimens of double steel plate concrete composite shear walls were tested under quasi-static loading, including 13 specimens with corrugated steel plate and 2 specimens with flat steel plate. The failure process of the specimens was observed, the strain distribution was obtained, and the influence of various parameters on the seismic behavior of the specimens was analyzed. The test results show that compared with the transverse corrugated specimens, the vertical corrugated specimens have a higher bearing capacity, slower strength and stiffness degradation, and better ductility. The ductility and energy dissipation of the corrugated steel plate specimens are significantly better than that of the flat steel plate specimens when the bearing capacity is almost the same. The installation of the connector leads to the reduction of the initial stiffness and strength degradation of the specimen. However, the connector can effectively improve the bearing capacity and ductility of the specimen with a smaller shear span ratio and can prevent the specimen from out-of-plane failure. In the test, increasing the axial compression ratio can significantly improve the ultimate capacity, initial stiffness, and energy dissipation capacity of the specimen, but the strength and stiffness degradation rate of the specimens also increased rapidly, and the ductility was reduced. Increasing the shear span ratio will significantly reduce the ultimate capacity and initial stiffness of the specimen, but has no significant effect on the ductility and energy dissipation capacity. The full section plastic theory is used to calculate the normal section bearing capacity of double-skin corrugated plates and concrete composite shear walls, and the experimental results are in good agreement with the calculated values.