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在钢板剪力墙结构中,上下两层内嵌钢板拉力带的水平分力作用在中间梁上,减小了梁端弯矩,降低了节点的刚度要求,为采用半刚性节点提供了可能。据此,提出半刚接钢框架钢板剪力墙新型结构体系的概念,并设计了单跨两层栓焊连接(节点域无加劲肋)钢框架-钢板剪力墙试件,进行了低周反复荷载试验研究和有限元分析。试验主要从整体性能方面对试件进行评价,有限元主要从内力分配、节点受力及传力机理等方面对试件进行补充分析。结果表明,该体系有较高的水平承载力和良好的耗能能力;一层内嵌钢板拉力带比二层更加明显;内嵌钢板承担的水平剪力占总水平剪力的65.28%～73.87%,承担的倾覆弯矩占总倾覆弯矩的21.98%～33.35%;该体系的薄弱部位不在节点,采用半刚性节点是合理的。
In the steel plate shear wall structure, the horizontal component of the tension band embedded in the upper and lower steel plates acts on the middle beam, reducing the bending moment at the beam end and reducing the stiffness requirement of the node, which makes it possible to adopt the semi-rigid node. Based on this, the concept of a new type of structural system of semi-rigid steel shear wall was proposed, and a single-span two-layer welded joint (stiffener without joints) steel frame-plate shear wall was designed. Repeated Load Test and Finite Element Analysis. The test mainly evaluates the specimens from the aspects of overall performance. The finite element analyzes the specimens mainly from the aspects of internal force distribution, joint force and transmission mechanism. The results show that the system has higher horizontal bearing capacity and good energy dissipation capacity. One layer of inlaid steel plate tension zone is more obvious than the second floor. The horizontal shear force of embedded steel plate accounts for 65.28% ~ 73.87 of the total horizontal shear force %, And the overturned moment assumed takes 21.98% ~ 33.35% of the total overturning moment. The weak part of the system is not at the node, and it is reasonable to adopt the semi-rigid node.