非加劲与防屈曲钢板剪力墙性能及设计理论的研究现状

钢板剪力墙已被证明是高烈度区优秀的抗侧力构件，但设计方法不够成熟，阻碍了钢板剪力墙的推广应用。为服务设计，基于非加劲和防屈曲钢板剪力墙的研究历史和现状，总结出二者在性能和设计理论方面的主要研究成果，特别是对其力学性能、使用性能、工作机理、等代模型及边缘框架设计作了重点阐述。其中，最近新提出的等代模型(非加劲和防屈曲钢板剪力墙)，可适用于钢框架内嵌任意厚度钢板(厚板、中厚板及薄板)的结构分析。同时，指出当前设计方法的不足之处在于不能体现钢板剪力墙延性和耗能的优势，定量反映钢板剪力墙性能优势是今后研究工作中要解决的关键理论问题。此外，对于非加劲钢板剪力墙与框架施工顺序进行了初步分析，对同步施工时非加劲钢板剪力墙受剪承载力应予以折减。图33参39

An overview of current state-of-the-art in behavior and design theory for unstiffened or buckling-restrained steel plate shear walls

Steel Plate Shear Walls (SPSW), known to be an effective and attractive member for resisting lateral forces, play an important role in improving the seismic behavior of high rise steel structures. However, the use of SPSW is hindered by the lack of fully established design methodology. In this paper, current research on behavior and application of unstiffened and buckling-restrained SPSW are outlined and reviewed. As a result, several aspects with regard to unstiffened and buckling-restrained SPSW are illustrated, including the mechanical behavior, serviceability, working mechanisms, analytical model and design theory of boundary frame. Moreover, two currently-proposed new analytical models for unstiffened or buckling-restrained SPSW structural analysis, namely the Unified Strip Model(USM) and Bidirectional Strip Model(BSM), can be used to well replace the unstiffened and buckling-restrained SPSW respectively with arbitrarily slenderness ratio. Other concerns about SPSW include the need of design to reflect the good ductility and energy-dissipating capacity, and should be the direction of future research. In additional, it is verified that the lateral-resisting capacity may be reasonably reduced in the case of installation of unstiffened SPSW and frame at the same time because of unstiffened SPSW subjected to a preliminary pressure due to the axial compression of boundary columns.39Refs.In Chinese.