分层交叉密肋平钢板组合剪力墙滞回性能研究

Research on Hysteretic Properties of Composite Shear Walls with Layered Cross-Ribbed Flat Steel Plates

在已有研究的基础上,进一步探究分层型梯形加劲肋对内嵌组合平钢板剪力墙滞回性能的影响。设计出分2层和3层的交叉密肋内嵌组合平钢板剪力墙,均为双层单跨试件。利用有限元软件ABAQUS对其进行非线性和线性荷载作用加载,与已有的不分层交叉密肋平钢板组合剪力墙进行对比分析。研究结果表明:结构的承载力随着梯形加劲肋分层数目的增加而逐渐降低,但是其延性却随之增加,对比分析3个试件有限元模拟的结果,结构的承载能力和延性性能并非随着梯形加劲肋分层数目的增多而呈现线性变化,要结合实际情况综合分析结构的承载能力和延性性能来确定梯形加劲肋分层数目的多少。

On the basis of previous study,the effect of the layered trapezoidal stiffener on the hysteretic behavior of the embedded composite flat steel plate shear wall is investigated in further detail. There are two and three layers of cross-ribbed composite steel plate shear walls that are all two-story single-span specimens. The shear wall is subjected to nonlinear and linear loads in the finite element software ABAQUS,which is compared to the existing non-layered cross-ribbed steel plate shear wall.The findings indicate that as the number of trapezoidal stiffeners rises,the structure’s bearing capacity drops but its ductility increases. The load-bearing capacity and ductility of the structure do not grow linearly with the number of trapezoidal stiffeners. Thus,the load-bearing capacity and ductility of the structure should be thoroughly examined in order to calculate the number of trapezoidal stiffeners.