Torsional behaviour of steel-reinforced concrete-filled circular stainless steel tubular specimens

IF 4.6 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Constructional Steel Research Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI:10.1016/j.jcsr.2026.110232

Zhuo Chen , Zhi-Bin Wang , Jia-Chun Chen , Dong Li , Jing-Dong Tong

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Abstract

The torsional performance of steel-reinforced concrete-filled (circular) stainless steel tubular (SRCFSST) specimens was evaluated through experiments on fourteen specimens, including circular SRCFSST specimens and their concrete-filled (circular) stainless steel tubular (CFSST) counterparts. Embedding carbon profiled steel (CPS) increased the torsional resistance and stiffness of circular CFSST specimens by up to 27.2 % and 37.8 %, respectively. The CPS effectively delayed the propagation of concrete cracks. A finite element (FE) model was built for torsional analysis of circular SRCFSST specimens, and the simulation results agreed well with the test data. The mechanism analysis demonstrated that the CPS enhanced the confinement effect, leading to a significant increase (32.6 %) in the shear resistance of concrete. FE parametric analysis further revealed that both torsional stiffness and resistance increased with increasing steel ratios. Finally, simplified models were developed for predicting the torsional stiffness and resistance of circular SRCFSST specimens.

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钢筋混凝土填充圆形不锈钢管试件的扭转性能

通过对钢筋（圆形）不锈钢管混凝土（SRCFSST）和圆形（圆形）不锈钢管混凝土（CFSST）共14个试件的抗扭性能试验，评价了其抗扭性能。碳异形钢（CPS）的埋置可使圆形CFSST试件的抗扭强度和刚度分别提高27.2%和37.8%。CPS有效地延缓了混凝土裂缝的扩展。建立了圆形SRCFSST试件扭转有限元模型，仿真结果与试验数据吻合较好。机理分析表明，CPS增强了约束效应，使混凝土抗剪性能显著提高（32.6%）。有限元参数分析进一步表明，随着钢比的增加，扭转刚度和阻力均增加。最后，建立了圆形SRCFSST试件扭转刚度和抗扭抗力的简化模型。

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来源期刊

Journal of Constructional Steel Research 工程技术-工程：土木

CiteScore

7.90

自引率

19.50%

发文量

550

审稿时长

46 days

期刊介绍： The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.