Buckling-Resistant Design of Portal Steel Plate Shear Walls in Steel Frames
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摘要: 钢板剪力墙是一种广泛用于提高钢框架结构整体抗侧刚度的结构单元,而确保该单元发挥抗剪作用的重要前提则是保证其在正常使用阶段不会发生面外失稳。为此,对所创建的一种新型门式钢板剪力墙单元进行了多种受力工况下的稳定性分析,并根据其自身的构造特征以及方便设计的需要,提出了简单实用的防屈曲设计方法。该方法的主要创新之处为:1)对于钢板剪力墙的防屈曲设计无须设计人员二次分析,仅通过简单计算或作图法可直接确定相关参数;2)该方法给出了门式钢板剪力墙单元多种有效的防屈曲加劲方案,而且仅通过相关条件和要求可直接选取。Abstract: Steel plate shear walls are structural units widely used to improve the overall lateral stiffness of steel frame structures. It is essential to prevent out-of-plane instability during normal service to ensure the unit fulfills its shear resistance. This paper analyzes the stability of a novel portal steel plate shear wall under various stress conditions. Based on its structural characteristics and practical design needs, a simple and practical buckling-restraint design method is proposed. The main innovations of this method are: 1) Designers can determine the required parameters through simple calculations or graphical methods without performing secondary analysis for the buckling-restraint design. 2) It provides multiple effective buckling-restraint stiffening schemes for portal steel plate shear wall elements, which can be directly selected based on relevant conditions and requirements.
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