Experimental and numerical study on eccentric compression performance of partially encased composite columns with corrugated web

The Structural Design of Tall and Special Buildings Pub Date : 2023-12-13 DOI:10.1002/tal.2084

Wei Wang, Hengli Cai, Congyou Bai, Haiyang Bao, Boyuan Gao, Zhiwei Yuan, Jianhui Niu

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Abstract

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.

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带波纹腹板的部分封装复合材料柱偏心压缩性能的实验和数值研究

部分封装复合材料(PEC)由于其高强度和适合预制和组装而越来越受欢迎。波纹钢板比扁平钢板具有更高的面外刚度。与混凝土结合时，波纹钢板与混凝土之间的粘结比扁钢与混凝土之间的粘结更为明显。为此，本文提出了一种新型波纹腹板PEC柱(CPEC柱)，并通过实验和数值方法对其偏心受压性能进行了研究。共测试了9个试件，其中2个试件为轴向压缩，7个试件为偏心压缩。试验中考虑的关键因素是加载方向、加载偏心、连杆间距和法兰宽厚比。建立并验证了CPEC柱的三维有限元模型，采用参数化方法研究了波纹腹板波浪角对CPEC柱偏心受压性能的影响。最后，对CPEC柱相互作用曲线和承载力的现行设计规范进行了评价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Structural Design of Tall and Special Buildings

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