This paper presents the design and testing of stainless steel tubular columns filled with steel-fibre-reinforced concrete. The pin-ended, axially loaded composite columns had a fixed depth-to-plate thickness ratio and various stainless steel tube cross-sections, lengths, non-dimensional slenderness, concrete strengths and steel fibre percentages. They were filled with plain and steel-fibre-reinforced concrete. The composite column strengths, load–axial shortening behaviour and failure modes were measured and observed. The investigation showed that stainless steel tubular columns filled with steel-fibre-reinforced concrete offer a considerable increase in column strength and ductility compared with plain-concrete-filled tubes. It was also shown that Eurocode 4 accurately predicted the strengths of the composite columns, but was unsafe for long tubes of circular section and those filled with plain high-strength concrete.

中文翻译：

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钢纤维混凝土填充不锈钢柱的设计与测试

本文介绍了填充有钢纤维混凝土的不锈钢管柱的设计和测试。销钉端部，轴向加载的复合柱具有固定的深度与板厚之比，以及各种不锈钢管的横截面，长度，无量纲的细长度，混凝土强度和钢纤维百分比。他们充满了平原和钢纤维增强的混凝土。测量并观察了复合材料柱的强度，载荷-轴向缩短行为和破坏模式。研究表明，与普通混凝土填充管相比，填充有钢纤维混凝土的不锈钢管状柱的柱强度和延展性大大提高。还表明，欧洲规范4能够准确预测复合柱的强度，