Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Sulthana, U. Mashudha; Jayachandran, S. Arul

doi:10.1016/j.istruc.2016.12.002

Cited by 25 publications

(6 citation statements)

References 20 publications

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“…With the development of CFST research, a kind of CFST composite structure with concrete-filled double steel tube(CFDST) comes into view. The CFDST column offer similar structural advantages to CFST columns 7 . In addition, they are lighter, stronger, and perform better energy uptake capabilities.…”

Section: Axial Compression Performance Of Square Concrete Filled Doub...mentioning

confidence: 99%

Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP

Wang

Liang

et al. 2023

Sci Rep

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This paper focuses on the axial compression performance of 15 concrete-filled double skinned tubes CFDST columns with different CFRP reinforcement schemes. The design of this test used an outer square steel tube with a square steel tube inside, with concrete poured at the sandwich and the inner steel tube kept hollow. The structure is both cost effective and allows the hollow to be used for utility access. However, in recent years damage to CFDST has occurred due to fire, earthquakes, corrosion etc. Therefore, research into the reinforcement and repair of this structure is crucial. Compared to other reinforcement methods, FRP has the advantage of being lighter and more robust and does not significantly alter the original structure. In this study, the mechanical properties of the specimens were further analyzed from the data of load displacement, peak load and ultimate displacement by mainly observing and analyzing the damage mechanism of the specimens through the strengthening effect of different strengthening schemes for different hollow ratios. The results show that when the hollow ratio is not bigger than 0.33, the CFRP reinforcement effect is relatively obvious, especially the three-layer CFRP wrapped CFDST specimens have a substantial increase in bearing capacity and stiffness. Finally, an analytical study was carried out based on previous research and the experimental results agreed well with the calculated results.

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Section: Axial Compression Performance Of Square Concrete Filled Doub...mentioning

confidence: 99%

Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP

Wang

Liang

et al. 2023

Sci Rep

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“…shown in Equation ( 4). Based on it, scholar Sulthana et al 31 gave the formula for the axial compression capacity for CFDST columns, as shown in Equation (5).…”

Section: Cross-section Combination Formmentioning

confidence: 99%

“…AISC‐360 30 provided the formula for the axial compressive bearing capacity for ordinary CFST columns, as shown in Equation (). Based on it, scholar Sulthana et al 31 gave the formula for the axial compression capacity for CFDST columns, as shown in Equation ().

N_{u, AISC} = f_{yo} A_{so} + C_{2} f_{normalc} A_{normalc}

N_{u, Sulthana} = f_{yo} A_{so} + C_{2} f_{normalc} A_{normalc} + f_{yi} A_{si}

where A so , A c , and A si are the area of outer steel tube, UHPC, and inner steel tube, respectively; f yo , f yi are the yield strength of outer steel tube and inner steel tube; f c was the cylinder compressive strength of concrete. The C 2 factor takes 0.95 when the inner and outer steel tubes are circular, otherwise, it assumes 0.85.…”

Section: Bearing Capacity Calculationmentioning

confidence: 99%

Axial compressive behavior of ultra‐high performance concrete‐filled double skin high‐strength steel tubular short columns

Deng

2022

Structural Concrete

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In this paper, seven ultra-high performance concrete (UHPC)-filled double skin high-strength steel tubular (UHPCFDST) columns and four UHPC filled high-strength steel tubular (UHPCFST) columns axial compression tests were carried out. The effects of hollow ratio, width-to-thickness ratio of the outer steel tube, and cross-section combination form on the axial compression performance of UHPCFDST were studied, and the failure mode, axial load-strain curve, and strain response were discussed. The results showed that the highstrength steel tube had good compatibility with UHPC, and all specimens finally had serious buckling deformation. The peak load of UHPCFDST specimens decreased with the increase of the hollow ratio, the ductility and toughness were improved. The width-to-thickness ratio of the outer steel tube had the most significant effect on the axial compression performance of the specimens. With the increase of the width-to-thickness of the outer steel tube, the ductility of the specimens tended to increase, and the toughness index first increased and then decreased. Finally, a unified calculation model for the ultimate compressive capacity of UHPCFDST and UHPCFST specimens was proposed, and the predicted value was in good agreement with the experimental value.

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“…The structural response of CFDSST stub columns subjected to large deformation under compressive loading [23], long-term sustained load [24] and cyclic load [25] was also studied. Hassanein and Kharoob [26], Sulthana and Jayachandran [27], Zhao et al [28] and Ahmed et al [29] investigated the behaviour of CFDSST slender columns made with different cross-sectional configurations and steel materials and suggested design equations to predict the strength of these columns. Experimental studies were carried out on CFDSST beams with different profiles: circular profiles were used by Uenaka et al [30], Xiong et al [31], Eom et al [32] and Viet et al [33]; square profiles by Zhao and Grzebieta [12]; rectangular profiles by Tao and Han [13]; dodecagonal profile by Chen et al [34]; and square outer and circular inner profiles by Han et al [18].…”

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of concrete-filled double skin aluminium alloy tubes

Ali

Kamaris

Gkantou

2022

Engineering Structures

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Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Cited by 25 publications

References 20 publications

Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP

Axial compression performance of square concrete filled double skin SHS steel tubular columns confined by CFRP

Axial compressive behavior of ultra‐high performance concrete‐filled double skin high‐strength steel tubular short columns

Flexural behaviour of concrete-filled double skin aluminium alloy tubes

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