新型装配式钢板组合剪力墙轴压受力性能分析

FINITE ELEMENT ANALYSIS OF AXIAL COMPRESSION BEHAVIOR OF A NOVEL PREFABRICATED STEEL PLATE SHEAR WALL

新型钢板组合剪力墙是装配式构件中的一种新型抗侧力构件,为了研究该新型结构构件的设计参数对承载力的影响,采用大型有限元软件ABAQUS建立钢板组合剪力墙的有限元模型进行模拟分析,模型中混凝土和钢板均采用实体模型模拟,考虑了材料非线性。研究了钢板组合剪力墙的轴压受力机理,模拟了组合剪力墙的轴压性能,分析不同设计参数包括隔板横向间距、钢板厚度、墙体宽度、混凝土强度等级对试件承载力的影响。分析结果表明:所建立的有限元模型能较好地模拟组合墙的轴压性能,钢板厚度、墙体宽度和混凝土等级对承载力影响较为明显,均与试件的承载力呈线性关系,适中的隔板横向间距能保证该新型组合剪力墙具有最大的承载能力。

The steel plate composite shear wall is a new type of anti-lateral force component which is a kind of prefabricated component.In order to study the bearing capacity of the new structural component and the influence of its design parameters on the bearing capacity,the large finite element software ABAQUS was used to establish the steel plate assembly.The finite element model of the shear wall was simulated and analyzed.The concrete and steel plates in the model were all modeled by using solid models,taking into account material nonlinearity.In the paper,the axial compression mechanism of steel plate shear wall was studied,and the axial compression performance of the composite shear wall was simulated.The effects of different design parameters such as horizontal spacing,plate thickness,wall width,and concrete strength grades on the bearing capacity of the specimens were studied.The analysis results showed that the calculated results of the finite element model could well simulate the axial compression performance of the composite wall. The thickness of the steel plate,the width of the wall and the grade of the concrete had a significant influence on the bearing capacity,and both increased linearly with the bearing capacity of the specimens.The moderate spacing of the baffle ensures that the new composite shear wall will have the highest bearing capacity.