基于Abaqus内填蝴蝶形钢板的自复位钢框架模拟方法探究

Simulation Test on Self-centering Steel Frame with Infilled Butterfly-Shaped Steel Plate Shear Walls Based on Abaqus

为了更好地研究自复位结构体系,基于大型通用数值分析软件Abaqus建立了自复位蝴蝶形钢板剪力墙结构的精细有限元模型,详细介绍了自复位结构的建模方法和滞回特性。首先,对经典的角钢耗能的自复位节点试验进行模拟验证,证明了建模方法的可靠性。其次,建立并分析了内填蝴蝶形钢板的自复位钢框架,得到了结构在往复加载下的应力云图、钢绞线应力-层间侧移角曲线和滞回曲线。最后,与理论分析结果对比,检验建模精度。结果表明:单元的选取、接触方程的设置和求解技术的优选是建模成功与否的重要因素;通过Abaqus模拟内填蝴蝶型钢板剪力墙的自复位结构体系与理论符合较好。

In order to study on self-centering steel structural systems properly,a fine finite element modeling method of self-centering steel frame with an infilled butterfly-shaped steel plate shear wall（SPSW）was explored and developed based on the general FEManalysis program Abaqus,with full elaboration on self-centering steel structural system and its hysteretic property. Simulation test was first carried out on self-centering connections with seat angles,which proved the reliability of the modeling method. The FEMof self-centering butterfly-shaped SPSWs was then established and analyzed. Stress nephogram,stress-story drift curves of PT-strands and hysteresis curves of the self-centering butterfly-shaped SPSWs were developed based on the verified modeling method. The simulation results,when compared with the theoretical analysis,show that selection of element type,constraint enforcement method and optimization of solution are the crucial factors for the FEManalysis. Self-centering butterfly-shaped SPSWs can be simulated accurately by Abaqus.