多腔式双钢板组合剪力墙结构的抗震性能研究

Study on seismic performance of double steel plate composite shear wall with multi cavity

本文制作3片多腔式双钢板混凝土组合剪力墙试件,进行了水平低周荷载试验,得到了不同轴压比试件的滞回曲线、骨架曲线。试验表明:内填混凝土三向受压,其强度得到提升和延性得以改善,管内混凝土承担全部压力,可避免外侧钢板受压曲屈,两者协同工作;多腔式双钢板组合剪力墙具有滞回曲线饱满、承载力高、延性大和耗能能力强等优点,刚度退化和强度退化缓慢,极限位移角高达1/30~1/40。本文建立了ABAQUS有限元模型,有限元结果和试验结果基本相符,并进行了轴压比、剪跨比、腔体长宽比和端部构造形式等抗震影响参数分析,获得了一些有益的结论,可为将来工程应用提供科学依据。

In this paper,three multi-cavity double steel plate concrete composite shear wall specimens are made,and the horizontal low-cycle load test is carried out.The hysteresis curves and skeleton curves of the specimens with different axial compression ratios are obtained.The test results show that the strength and ductility of the filled concrete are improved under three-dimensional compression.The filled concrete bears all the pressure,which can avoid the compression and bending of the lateral steel plate.The cooperative work performance of steel and concrete is good.The multi-cavity double steel plate composite shear wall has the advantages of full hysteretic curve,high bearing capacity,large ductility and strong energy dissipation capacity.The stiffness degradation and strength degradation are slow,and the ultimate displacement angle is up to 1/30~1/40.In this paper,the ABAQUS finite element model is established,and the finite element results are basically consistent with the experimental results.The seismic influence parameters such as axial compression ratio,shear span ratio,cavity length-width ratio and boundary columns construction form are analyzed,and some useful conclusions are obtained,which can provide a scientific basis for future engineering applications.