方钢管混凝土框架-侧边开洞薄钢板剪力墙受力性能研究

采用大型通用非线性有限元软件ABAQUS 6.10分别对4个方钢管混凝土框架-侧边开洞薄钢板剪力墙进行数值分析,明确其受力性能和破坏形态,分析侧边加劲构件对结构刚度、承载力、延性及滞回性能的影响,提出侧边加劲构件截面设计方法。结果表明:方钢管混凝土框架-侧边开洞薄钢板剪力墙具有良好的受力性能和滞回性能;当侧边加劲构件与钢梁铰接时,侧边加劲构件能够显著提高方钢管混凝土框架-侧边开洞薄钢板剪力墙的极限承载力、初始刚度、延性和耗能能力;有限元计算结果与侧边加劲构件设计公式计算结果吻合较好,可供工程应用参考。

STUDY OF MECHANICAL BEHAVIOR OF THE CONCRETE FILLED SQUARE STEEL TUBE FRAMES-THIN STEEL PLATE SHEAR WALLS WITH SIDE OPENINGS

ABAQUS 6. 10 was used to do a nonlinear numerical analysis of the four concrete filled square steel tube( CFT) frames-thin steel plate shear walls with side openings. Mechanical behavior,failure pattern and effect of side stiffening components on the stiffness,loading capacity,ductility and hysteretic behavior were researched. And the theoretical formula of cross-section selection of side stiffening components was proposed. Results obtained from this study were as follows. The concrete filled square steel tube( CFT) frames-thin steel plate shear walls with side openings had good mechanical behavior and hysteretic behavior. When the side stiffening components had hinged connections with steel girders,the side stiffening components could significantly increase the bearing capacity,stiffness,ductility and energy dissipation. The results of finite element analysis and design formula calculation were in good agreement,which provided a reference for engineering application.