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Concrete panel thickness demand for the design of composite steel plate shear wall

机译：复合钢板剪力墙设计的混凝土板厚度需求

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摘要

Composite steel plate shear walls (C-SPWs) are composed of an infill steel plate and reinforced concrete encasements. With an adequate thickness, the concrete encasement can effectively prevent the premature buckling of the infill steel plate. Researchers have provided nonconservative concrete thickness demands through analyses of approximate elastic buckling, for which the analytical model is too simplistic to simulate C-SPW buckling. In this paper, the buckling of C-SPW is addressed using a nonlinear finite element method. To assist this method, a formula for the buckling strength of C-SPW is theoretically developed. Utilizing the results of nonlinear finite element analysis on C-SPW, the effects of concrete panel thickness, concrete elastic modulus, infill steel plate thickness, panel aspect ratio, and stud spacing on the infill steel plate buckling are analyzed, and the critical drift ratio corresponding to the buckling of the infill steel plate is obtained. According to the criterion that the C-SPW will not buckle until its drift ratio achieves the drift limit (0.4%), the minimum concrete panel thicknesses demands are captured from finite element analysis. Fitting these predicted minimum concrete thicknesses, an available formula is proposed for the concrete thickness demand in the design of C-SPW.
机译：复合钢板剪切墙（C-SPW）由填充钢板和钢筋混凝土封装组成​​。具有足够的厚度，混凝土封口可以有效地防止填充钢板的过早屈曲。研究人员通过近似弹性屈曲的分析提供了非负化型混凝土厚度要求，其中分析模型太简单而无法模拟C-SPW屈曲。在本文中，使用非线性有限元法解决了C-SPW的屈曲。为了协助该方法，理论上开发了C-SPW的屈曲强度的公式。利用非线性有限元分析对C-SPW的结果，分析了混凝土板厚度，混凝土弹性模量，填充钢板厚度，面板纵横比和螺柱间距对填充钢板屈曲的影响，以及临界漂移比获得对应于填充钢板的屈曲。根据C-SPW在其漂移比率达到漂移极限（0.4％）之前，C-SPW不会扣紧的标准，从有限元分析中捕获最小混凝土板厚度要求。拟合这些预测的最小混凝土厚度，提出了一种用于C-SPW设计中的混凝土厚度需求的可用配方。

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