Compressive strength of axially loaded circular concrete-filled double-skin steel tubular short columns

Yan, Xi‐Feng; Zhao, Yan‐Gang

doi:10.1016/j.jcsr.2020.106114

Cited by 59 publications

(25 citation statements)

References 38 publications

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“…Experimental work on CFDST short and slender columns with carbon steel has been reported earlier (Essopjee and Dundu, 2015; Ekmekyapar and Hasan, 2019; Lin and Tsai, 2001; Li et al, 2012; Li and Cai, 2019; Tao et al, 2004; Uenaka et al, 2010; Yan and Zhao, 2020). Preliminary studies showed that the smaller the diameter-to-thickness (Do/to) ratio of the outer tube, the higher the ductility of the column (Tao et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Preliminary studies showed that the smaller the diameter-to-thickness (Do/to) ratio of the outer tube, the higher the ductility of the column (Tao et al, 2004). Furthermore, the hollow ratio (κ) of the columns was found to influence the performance of the columns considerably (Yan and Zhao, 2020). However, investigations of the performance of circular CFDST columns with stainless-carbon steel have been very rare.…”

Section: Introductionmentioning

confidence: 99%

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Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending

Ahmed

Liang

Hamoda

2022

Advances in Structural Engineering

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Circular concrete-filled double-skin steel tubular (CFDST) columns with external stainless-steel are high-performance composite columns that have potential applications in civil construction including the construction of offshore structures, bridge piers, and transmission towers. Reflecting the limited research performed on investigating their mechanical performance, this study develops a computationally efficient fiber model to simulate the responses of short and slender beam-columns accounting for the influences of material and geometric nonlinearities. Accurate material laws of stainless steel, carbon steel, and confined concrete are implemented in the mathematical modeling scheme developed. A new solution algorithm based on the Regula-Falsi method is developed to maintain the equilibrium condition. The independent test results of short and slender CFDST beam-column are utilized to validate the accuracy of the theoretical solutions. The influences of various column parameters are studied on the load-axial strain [Formula: see text] curves, load-lateral deflection [Formula: see text] curves, column strength curves, and interaction curves of CFDST columns. Design formulas are suggested for designing short and beam-columns and validated against the numerical results. The computational model is found to be capable of simulating the responses of CFDST short and slender columns reasonably well. Parametric studies show that the consideration of the concrete confinement is important for the accuracy of the prediction of their mechanical responses. Furthermore, high-strength concrete can be utilized to enhance their load-carrying capacity particularly for short and intermediate slender beam-columns. The strengths of CFDST columns computed by the suggested design model are in good agreement with the test and numerical results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending

Ahmed

Liang

Hamoda

2022

Advances in Structural Engineering

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“…Concrete-filled steel tubular (CFST) specimens utilize the interaction of two materials, steel tube and concrete during loading, enhancing the strength and ductility of concrete, which fully utilizes the material properties of steel tube and concrete. [1][2][3][4] Moreover, the high-passing ability of concrete in steel tubes also makes the construction more efficient and simplified. [5] Therefore, it has been widely used in the construction industry.…”

Section: Introductionmentioning

confidence: 99%

Size effect of circular concrete‐filled stainless steel tubular short columns under axial compression

Liu

Wang

Yuan

2022

Structural Design Tall Build

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Summary Concrete‐filled stainless steel tube (CFSST) members combine the advantages of stainless steel materials and concrete‐filled steel tube (CFST) members. Therefore, it has a broad range of applications than CFST members in the marine environment and other scenarios requiring great durability and corrosion resistance. However, there are limited researches on the large‐sized CFSST members. In this paper, 30 circular CFSST members with varying steel ratios (3.7% ≤ α ≤ 10.3%), diameters (500 mm ≤ D ≤ 900 mm), and strength of concrete ( fcu = 40 MPa, 50 MPa) are studied on the size effect under axial compression. For peak axial stress, peak axial strain, and composite elastic modulus, size effects are investigated. According to the results, the peak axial stress and peak axial strain of the members increase with the increase in diameter. The modulus of composite elasticity essentially stays constant as the diameter increases, showing that there is no obvious size effect on the composite elastic modulus. The size effect of peak axial stress and peak axial strain is influenced by the steel ratio. Increasing the steel ratio tended to decrease the size effect. According to the generated data, it was found that the current codes of Chinese and European underestimate the ultimate bearing capacity of CFSST short columns significantly. To this end, the resistances of the large‐sized austenitic CFSST columns with a low steel ratio are well predicted by the proposed design model after being modified, based on GB 50936‐2014 and EN 1994‐1‐1 design codes.

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“…CFDST cross-sections with circular outer and inner profiles (see Fig. 1), which exploit composite action to the greatest extent [9], are the focus of the present study.…”

Section: Introductionmentioning

confidence: 99%

Testing and numerical modelling of circular CFDST cross-sections with stainless steel outer tubes in bending

Wang

Young

Gardner

2021

Engineering Structures

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Compressive strength of axially loaded circular concrete-filled double-skin steel tubular short columns

Cited by 59 publications

References 38 publications

Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending

Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending

Size effect of circular concrete‐filled stainless steel tubular short columns under axial compression

Testing and numerical modelling of circular CFDST cross-sections with stainless steel outer tubes in bending

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