综述混凝土填充管柱在轴向压缩下的性能:强调几何参数和各种混凝土填充物及包层

Isha Rohilla, Surinder Gupta
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引用次数: 0

摘要

本文总结了有关混凝土填充钢管(CFST)柱行为的现有文献,以评估轴向荷载下 CFST 柱的几何特性(如横截面形状、直径与厚度之比以及长度与直径之比)的影响。然后,总结了轴向荷载下不同材料组成对柱芯混凝土和包裹材料的影响。从破坏模式、延展性、刚度和轴向抗压强度等方面对 CFST 的性能进行了评估。本文研究了碳钢、不锈钢和铝等包裹管,并对普通混凝土 (NSC) 和高强度混凝土 (HSC)、轻质混凝土 (LWC)、再生骨料混凝土 (RAC)、膨胀混凝土 (EC)、橡胶屑混凝土 (RuCC) 和钢渣混凝土 (SSC) 等各种混凝土进行了审查。本文还提到了各种规范对复合结构设计中管材和芯材混凝土的材料限制。混凝土填充管柱(CFT)的失效模式受柱的几何特性影响最大,而混凝土和包裹管的材料并不会造成太大的差异。不过,延展性、轴向抗压强度和刚度同时受到几何特性和材料特性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A review on the performance of concrete filled tubular columns under axial compression: Emphasis on geometrical parameters and various concrete infills and encasings
This paper summarizes the literature available on the behavior of concrete-filled steel tubular (CFST) columns to evaluate the effect of geometrical properties such as shape of cross-section, diameter-to-thickness ratio, and length-to-diameter ratio of CFST columns under axial loading. Then, the impact of different material composition for core concrete and encasing material is concluded for columns under axial loading. The performance of CFST is evaluated in terms of failure modes, ductility, stiffness, and axial compressive strength. For encasing tube, carbon steel, stainless steel, and aluminum are studied while for core, various concretes such as Normal (NSC) and high strength concrete (HSC), light weight concrete (LWC), recycled aggregate concrete (RAC), expansive concrete (EC), rubber crumb concrete(RuCC), and steel slag concrete (SSC) are covered for review in this paper. Material limitations as provided by various codes for design of composite structures is also mentioned for both tube and core concrete. Failure modes of concrete-filled tubular(CFT) columns are most affected by geometric properties columns while materials used for concrete and encasing tube do not cause much difference. Though, ductility, axial compressive strength, and stiffness are affected by both geometric and material properties.
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