剪跨比对玻化微珠保温混凝土剪力墙抗震性能影响研究

Study on Seismic Behaviour of Glazed Hollow Bead Insulation Concrete Shear wall With Different Shear Span Ratio

采用拟静力试验及ABAQUS有限元模拟的方法对五种不同剪跨比剪力墙的抗震性能进行分析,对比了不同剪跨比剪力墙的破坏形态、承载力、位移、延性性能及荷载—位移滞回曲线等抗震性能指标。研究结果表明：剪跨比是玻化微珠保温混凝土剪力墙抗震性能的重要影响因素,剪跨比越大,剪力墙屈强比越小,安全储备能力越高,延性系数越大,结构延性越好,后期刚度越稳定,耗能能力越强,承载力越小。当剪跨比在1.24~1.8之间时,剪力墙延性较好,承载力较高,抗震性能较理想。研究结果可为玻化微珠保温混凝土剪力墙结构设计提供试验支撑和理论依据。

The seismic performance of five different shear span ratio shear walls were analyzed by the quasi-static test and ABAQUS finite element simulation. The seismic performance of different shear span ratio shear wall,such as failure mode,bearing capacity,displacement,ductility and hysteretic curve,were compared. The comparison shows that shear span ratio is the important influencing factors of seismic performance of glazed hollow bead insulation concrete shear wall. The greater the shear wall＇s shear span ratio was,the smaller yield ratio was,The higher the security reserve capacity was,the bigger displacement ductility coefficient was,the better the ductility was,but the bearing capacity was lower. When the shear span ratio between 1. 24 ～ 1. 8,the shear wall has better ductility,high bearing capacity,and seismic performance is more ideal. The research results can provide experimental support and theoretical basis for the structure design of the glazed hollow bead insulation concrete shear wall.