Vol. 22, No. 2, pp. 130-142 (2026)
EXPERIMENTAL AND NUMERICAL ANALYSIS ON THE STRUCTURAL
PROPERTIES OF CONCRETE-FILLED RECTANGULAR THIN-WALLED
HIGH-STRENGTH STAINLESS-STEEL TUBULAR COLUMNS
Jun Zhao 1, Yang Peng 2, Wei-Chao Zhang 3, Shen-Lan Li 4 and Jun Dong 2 , *
1 School of Civil Engineering and Architecture, Changzhou Institute of Technology, Changzhou 213032, China
2 College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China
3 Sinopec Sales Co., Ltd. Lianyungang Petroleum Branch, Lianyungang 222500, China
4 Rural Economic Service Center of Banpu Town, Lianyungang 222241, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 20 February 2025; Revised: 21 June 2025; Accepted: 26 June 2025
DOI:10.18057/IJASC.2026.22.2.1
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ABSTRACT
Exploring high-performance structures suitable for high corrosion marine environment is one of the research priorities in engineering. In order to meet the requirements of the marine environment and reduce costs, thin-walled stainless-steel was used to design a high-performance component. Two stainless-steel lipped channels were welded to form a new stainless-steel tubular column, with concrete filled inside, a high-performance concrete-filled stainless-steel tubular column was designed. Axial compression short column test, finite element analysis of axial compression short columns, axial compression and compression-bending intermediate-length columns were carried in the paper. Six groups of axial compression tests were conducted, results shown that both rectangular stiffening ribs and V-shaped stiffening ribs could enhance the restraint capacity of the external stainless-steel tube. The ultimate capacity of the axial compression short column with bidirectional ribs was 15.04% higher than that of the short column with unidirectional ribs. The axial compression mechanization of short columns, axial compression and compression-bending mechanization of median long column were analyzed by FEM. For axial compression short columns, the main parameters were the size of the V-shaped stiffeners and the compressive strength of the concrete. When the width-to-thickness ratio of the V-shaped stiffener was 8.33 and the angle was 90°, the cross-sectional performance was the best. When the concrete was C80, the peak load was increased by 17.20% compared with C60. For axial compression and compression-bending intermediate-length columns, the main parameters were the slenderness ratio and eccentricity. When the slenderness ratio was in the range of 15.17-91.02, the larger the slenderness ratio, the faster the stiffness degradation. When the eccentricity was in the range of 0.56-3.75, the deformation capacity of intermediate-length columns was better, and the ductility was also better. The recommendation of compression-bending capacity calculation formula was proposed, with high accuracy.
KEYWORDS
High-strength stainless-steel, Concrete-filled rectangular tubular column, Axial compression short column test, Compression-bending, Finite element analysis
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