Partially encased composite (PEC) members are becoming increasingly popular because of their high strength and suitability for prefabrication and assembly. Corrugated steel plate has higher out-of-plane stiffness than flat steel plate. When it is combined with concrete, the bonding between corrugated steel plate and concrete is more obvious than that between flat steel plate and concrete. For this reason, a new type of corrugated web PEC column (CPEC column) was proposed in this paper, and its eccentric compression performance was studied by experiment and numerical method. Nine specimens were tested, of which two were subjected to axial compression and seven were subjected to eccentric compression. The key factors considered in the experiment were the loading direction, load eccentricity, link spacing, and width-to-thickness ratio of flange. A three-dimensional finite element model of the CPEC columns was established and verified, and the influence of the wave angle of corrugated web on the behavior of CPEC columns under eccentric compression was investigated using a parametric study. Finally, the current design codes for estimating the interaction curve and bearing capacity of CPEC columns were assessed.

中文翻译：

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波纹腹板部分包裹组合柱偏心受压性能试验与数值研究

部分封装复合材料（PEC）构件由于其高强度且适合预制和组装而变得越来越受欢迎。波纹钢板比平板钢板具有更高的面外刚度。与混凝土结合时，波纹钢板与混凝土的粘结比平板钢板与混凝土的粘结更为明显。为此，本文提出一种新型波纹腹板PEC柱（CPEC柱），并通过实验和数值方法研究其偏心受压性能。测试了九个样本，其中两个受到轴向压缩，七个受到偏心压缩。试验中考虑的关键因素是载荷方向、载荷偏心、连杆间距、翼缘宽厚比。建立并验证了CPEC柱的三维有限元模型，并通过参数化研究了波纹腹板的波角对CPEC柱偏心受压性能的影响。最后，对当前用于估计 CPEC 柱相互作用曲线和承载力的设计规范进行了评估。