钢框架-防屈曲开斜槽耗能钢板剪力墙装配式结构体系抗震性能分析

Seismic performance of fabricated structural system of steel frame-buckling-restrained steel plate shear wall with inclined-slots

防屈曲开斜槽耗能钢板剪力墙(简称开斜槽钢板墙)是一种新提出的抗侧力构件,相比于普通钢板剪力墙,具有多个可调参数、耗能稳定且延性好的优点,并可作为装配式单元,通过组装单元的方式形成装配式剪力墙结构,进一步形成不同的装配式抗侧力体系。本文介绍了钢框架-开斜槽钢板墙装配式结构体系,包括开斜槽钢板墙设计方法,装配式剪力墙结构以及结构体系设计方法,并以20层办公大楼为例进行设计,对结构在小震和大震下的抗震性能进行分析。计算结果表明,开斜槽钢板墙可提供较大的抗侧刚度,能充分发挥耗能作用,保护主体结构安全,符合双重抗侧力体系的原则,该结构体系具有优越的抗震性能。

Buckling-restrained steel plate shear wall with inclined slots( simply referred as 'slotted SPSW') is a new proposed lateral resistant member. Compared with traditional steel plate shear wall,it has the advantages of more adjustable parameters,stable energy dissipation capacity and good ductility. It can also work as fabricated unit and form fabricated shear wall structure and different fabricated lateral load resisting systems by assembling units. This paper introduces the fabricated structural system of steel frame-slotted SPSW,including the design method of slotted SPSW,fabricated shear wall structure and the design procedure of the structural system. A case of 20-story office building was designed using the structural system and its seismic performance was analyzed under frequent and rare earthquake. The results show that the slotted SPSW can provide high lateral stiffness and dissipate energy thus protecting the main structure,conforming to principle of dual system and showing the structural system exhibits excellent seismic performance.