Experimental and numerical analysis on rectangular concrete-filled steel tubular columns with T-shaped stiffeners

Chen, Shaozhen; Liu, Yuan; Luo, Jinhui; Gao, Shuyu

doi:10.1016/j.jobe.2021.103510

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Steel casings and concrete were interconnected by surface-to-surface contact, with the connection property taken into consideration together with tangential and normal behavior. The hard surface was taken into account for normal behavior, and the friction coefficient was regarded as 0.2 (Chen et al, 2022). Normal behavior suggests that when two surfaces come into connection, normal stresses emerge and normal stresses dissipate as they separate.…”

Section: Finite Element Analysismentioning

confidence: 99%

Axial compression behaviour of concrete filled double skin steel tube columns anchored with orbicular rings: Experimental and numerical approach

Singh,

Tiwary

2023

Advances in Structural Engineering

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Double-skin tube column sections have been used extensively in recent years. These sections are composed of two adjacent, coaxially spaced steel casings, and the space in the middle of them is occupied with concrete. These CFDST columns behave similarly to CFST sections but are more rigid and have a lesser self-weight. The behavior of a novel type of CFDST column, the orbicular anchored CFDST column, was assessed under axial compression in the current research. It comprises an inside and an outside steel tube with orbicular rings near the ends of the columns. The orbicular rings were positioned at various spots such as [Formula: see text] and [Formula: see text] and a wide range of tests were accomplished to evaluate the functionality of orbicular anchored CFDST columns in respect of maximum load-bearing capability, load-strain behavior, and load-deformation behavior. A FE model was developed and its accuracy was authenticated by comparing its findings with experimental results. Furthermore, a parametric investigation was carried out employing the authenticated FE model to examine the functioning of the proposed CFDST to variations in orbicular position, cross-sectional dimensions of rings, yield strength of orbicular ring, etc. The outcomes of the study indicated that orbicular anchored CFDST columns had 15% higher ultimate load capacity than unstiffened counterparts. The orbicular anchorage improved the ductile response and increased the axial stiffness of the CFDST column. Further, it was concluded that orbicular rings enhanced the constraining effect of external steel casing on sandwiched concrete and improved the composite action of CFDST specimens. The design formula to ascertain the load-bearing ability of columns was also developed and can be employed amid preliminary designs of proposed column sections.

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Section: Finite Element Analysismentioning

confidence: 99%

Axial compression behaviour of concrete filled double skin steel tube columns anchored with orbicular rings: Experimental and numerical approach

Singh,

Tiwary

2023

Advances in Structural Engineering

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“…Past considerable research has been conducted on arresting the problem of local buckling of steel tube columns. Due to the high efficiency and economy, the stiffened square steel tube column was an alternative way to improve the local buckling behavior (Chen et al, 2022; Liu et al, 2021; Tao et al, 2005). On account of continuous stiffening provided by corrugated steel plates, the use of thinner steel plates was permitted (Nassirnia et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Development and axial behavior of precast concrete wrapped square steel tube columns

Huang

et al. 2022

Advances in Structural Engineering

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Conventional thin-walled square steel tube columns are vulnerable to local buckling, carbon steel is susceptible to corrosion, and complicated fireproof measures increase the maintenance expenditures. As a result, a novel composite component, namely precast concrete wrapped square steel tube (PCWST) column is developed in this study. Seven PCWST columns subjected to axial compression load were investigated experimentally with different width-to-thickness ratios, specimen sizes, types and configurations of shear connectors in comparison to three square steel tube columns. The distinctive behavior of PCWST columns and square steel tube columns included failure modes, axial load-axial shortening responses, stiffness, buckling respond, load-carrying capacity and ductility were compared. Based on experimental results, nonlinear finite element (FE) models with full detailing were established and validated. Meanwhile, a simplified formula for predicting the load-carrying capacity of PCWST columns was proposed. Tested and simulated results show that steel tube and reinforced concrete (RC) encasement worked together for PCWST columns, and the head studs and the developed kinked rebars can enhance their interaction. The existing of RC encasement dramatically improves stiffness and load-carrying capacity, and it also delays the occurrence of local buckling of steel tubes.

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Influence of Diagonal Prop Bar on the Behavior of Stiffened Concrete-Filled Steel Tube Columns

Singh,

Tiwary

2023

J. Inst. Eng. India Ser. A

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Experimental and numerical analysis on rectangular concrete-filled steel tubular columns with T-shaped stiffeners

Cited by 3 publications

References 29 publications

Axial compression behaviour of concrete filled double skin steel tube columns anchored with orbicular rings: Experimental and numerical approach

Axial compression behaviour of concrete filled double skin steel tube columns anchored with orbicular rings: Experimental and numerical approach

Development and axial behavior of precast concrete wrapped square steel tube columns

Influence of Diagonal Prop Bar on the Behavior of Stiffened Concrete-Filled Steel Tube Columns

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