Study on concrete-filled stainless steel–carbon steel tubular (CFSCT) stub columns under compression

Xu, Chang; Ru, Zhong Liang; Wei, Zhou; Zhang, Yongbin

doi:10.1016/j.tws.2012.10.002

Cited by 85 publications

(43 citation statements)

References 22 publications

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“…An investigation into the behaviour of circular concrete filled lean duplex stainless steel tube using the finite element package ABAQUS [18] was reported by Hassanein et al [19]. However, the FE model was validated using experimental studies on austenitic stainless steel columns carried out by Chang et al [20], there was no experimental study on lean duplex concrete filled columns. It can be seen that previous research into lean duplex composite columns is relatively limited, little experimental study has been made on concrete filled composite columns with lean duplex stainless steel sections.…”

Section: Introductionmentioning

confidence: 99%

08.15: Axial behaviour of concrete filled lean duplex stainless steel square hollow sections

2017

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Stainless steel hollow sections have been used in building constructions for a number of years due to their durability and superior mechanical properties. However, they are less favourable than the carbon steel counterpart owing to their relatively high cost. A new, low nickel content stainless steel (EN 1.4162) or commonly referred as 'lean duplex' has been developed; which has over two times the strength of the more familiar austenitic stainless steel but at approximately half the cost. This more economical alternative would definitely be an attractive option to the construction industry. This paper presents the behaviour of axially loaded concrete filled composite stub columns with lean duplex stainless square hollow sections. A series of tests was performed to consider the behaviour of short composite stainless steel columns under axial compressive loading, covering lean duplex stainless steel square hollow sections filled with normal to high strength concrete. Based on the experimental studies, a modified equation based on the current Eurocode 4 on steel concrete composite structures is proposed.

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Section: Introductionmentioning

confidence: 99%

08.15: Axial behaviour of concrete filled lean duplex stainless steel square hollow sections

2017

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“…Eqs. (8) and (9) and FE modeling method were applied to predict the load bearing capacity of those CFT columns as tested in this study and also from references [1][2]. The experimental results were compared with the predicted results using different methods: FE model, Eqs.…”

Section: Formula Validationmentioning

confidence: 99%

“…The experimental results were compared with the predicted results using different methods: FE model, Eqs. (8) and (9). And the ratios of the experimental result over the predicted value by using each individual method are presented in Table 5.…”

Section: Formula Validationmentioning

confidence: 99%

“…They have much more advantages compared with the ordinary steel or concrete system including higher strength and stiffness, higher ductility, and larger energy absorption capacity [1]. With the benefits of CFT, the use of CFT columns is becoming more popular and the performance of concrete filled steel tubes has caught more and more research attentions [1][2][3][4][5][6][7][8][9]. In most cases, such as the pier of bridges and arch structures, CFT columns are subjected to axially compression loads.…”

Section: Introductionmentioning

confidence: 99%

“…Ultimate bearing capacity from test results N (kN)Ultimate bearing capacity from test results N (kN) Ultimate bearing capacity from Eq (8). …”

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confidence: 99%

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Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Ding

Liu

et al. 2015

Thin-Walled Structures

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a b s t r a c tThis paper presents a combined experimental and numerical study on the behavior of both circular and square concrete-filled steel tube (CFT) stub columns under local compression. Twelve circular and eight square CFT stub columns were tested to study their bearing capacity and the key influential parameters. A 3D finite element model was established for simulation and parametric study to investigate the structural behavior of the stub columns. The numerical results agreed well with the experimental results. In addition, analytical formulas were proposed to calculate the load bearing capacity of CFT stub columns under local compression.

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Flexural performance of circular concrete‐filled double steel tubular members: Testing, modeling, and strength predictions

Ahmed

Zhou

et al. 2022

Structural Concrete

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This paper presents experimental and numerical investigations on circular concrete‐filled double steel tubular (CFDST) members under flexural load. Seven specimens including five CFDST specimens were tested and the test parameters included the effects of concrete compressive strength, the thickness of the steel tubes, and the diameter ratio on their flexural performance. The final failure modes, moment (M)‐curvature (ϕ) curves, deflection curves of specimens, and distributions of section longitudinal strains were analyzed and reported in this study. A nonlinear finite element model (FEM) was then developed for the CFDST members. After successful validation in ultimate strengths and failure modes, parametric studies were performed by using the verified FEM. A simple formula for calculating the flexural capacity of CFDST members was proposed and compared against several design codes to investigate the design accuracy. Based on this study, it was found that the CFDST members exhibit ductile behavior under flexural load. Increasing the steel area, particularly for the outer tube improved the flexural capacities of the members. Furthermore, the existing design codes were found to be remarkably underestimating the moment capacities of CFDST members whereas the design formula proposed can predict the ultimate flexural capacity with reasonable accuracy.

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Study on concrete-filled stainless steel–carbon steel tubular (CFSCT) stub columns under compression

Cited by 85 publications

References 22 publications

08.15: Axial behaviour of concrete filled lean duplex stainless steel square hollow sections

08.15: Axial behaviour of concrete filled lean duplex stainless steel square hollow sections

Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Flexural performance of circular concrete‐filled double steel tubular members: Testing, modeling, and strength predictions

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