Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire

Mao, Wen-Jing; Wang, Wenda; Zhou, Kan; Du, Er-Feng

doi:10.1016/j.jcsr.2021.106867

Cited by 22 publications

(6 citation statements)

References 31 publications

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“…The axial deformation of specimen SSU-Z-50 exposed to uniform fire as reported in Ref. [46] is now compared with the present test results (see Fig. 9(c)).…”

Section: Deformation-time Responsementioning

confidence: 70%

“…tested under the uniform fire, which is described in some detail in Ref. [46]. The specimens are installed with hinge supports at both ends.…”

Section: General Descriptionmentioning

confidence: 99%

“…For the sake of brevity, the mix proportion of concrete has been reported in Ref. [46] in details. Therefore, the cube compressive tests were carried out at 28-day and the day of fire testing (155 days) at ambient temperature, and the corresponding averaged strength are 47.4 MPa and 64.4 MPa, respectively.…”

Section: General Descriptionmentioning

confidence: 99%

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Investigation on fire resistance of steel-reinforced concrete-filled steel tubular columns subjected to non-uniform fire

Mao

Zhou

Wang

2023

Engineering Structures

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“…The axial deformation of specimen SSU-Z-50 exposed to uniform fire as reported in Ref. [46] is now compared with the present test results (see Fig. 9(c)).…”

Section: Deformation-time Responsementioning

confidence: 70%

“…tested under the uniform fire, which is described in some detail in Ref. [46]. The specimens are installed with hinge supports at both ends.…”

Section: General Descriptionmentioning

confidence: 99%

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Investigation on fire resistance of steel-reinforced concrete-filled steel tubular columns subjected to non-uniform fire

Mao

Zhou

Wang

2023

Engineering Structures

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“…Amongst the scarce experimental investigations available on SR-CFST columns exposed to fire conditions, one can find the tests performed at the University of Liège [1] or those carried out in Shanghai [2,3]. More recently, the experiments conducted at Southeast University [4][5][6] must be highlighted where specifically SR-CFST columns with a cruciform steel section embedded in the concrete were tested subjected to uniform and non-uniform heating and with and without fire protection. In light of the review of the experimental programmes published in the literature, it can be seen that the number of available fire test results on SR-CFST columns is still limited.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of the load‐bearing capacity of steel‐reinforced CFST stub columns under a fire scenario

Medall,

Ibáñez,

Espinós

et al. 2023

ce papers

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Composite construction is becoming increasingly used across the world, since it enables to exploit the benefits of steel and concrete working together, leading to cost‐effective solutions. Recent technological developments have facilitated the introduction of new typologies, which combined with the use of high performance materials allow for significant load‐bearing capacities with reduced cross‐sectional dimensions. One of these innovative composite sections are the so‐called steel‐reinforced concrete‐filled steel tubular (SR‐CFST) columns, where an open steel profile is embedded into a CFST section. Apart from the broadly recognized benefits of these typologies at room temperature, they show an enhanced fire performance due to the inherent fire protection offered by the surrounding concrete to the inner steel profile, which delays its loss of mechanical capacity at elevated temperatures. However, the experimental evidence on the fire behaviour of SR‐CFST columns is still scarce, being much needed for the development of specific design provisions that consider the use of the inner steel profile in CFST columns.In this paper, a new testing program on the thermo‐mechanical behaviour of SR‐CFST columns is presented to extend the available experimental database. A cylindrical electric furnace attached to a loading rig equipped with a 5000 kN hydraulic jack is used. In total six SR‐CFST stub columns are tested, three circular and three square sections, combining high strength steel and concrete.

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“…Meng et al [ 27 ] numerically carried out the calculation of the residual bearing capacity of SRCFST after ISO834 standard fire and proposed a prediction formula for the residual strength index of SRCFST columns with the square section under different fire exposure modes. This type of component has been tested under uniform and non-uniform fire by Mao et al [ 28 ] and Fqma et al [ 29 ]. After the fire, except for the collapsed buildings, the other buildings that have not collapsed need to have their mechanical properties evaluated.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire

Han

Bao

2022

Materials

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Steel-reinforced concrete-filled steel tubular (SRCFST) columns have a great development prospect in engineering practice due to their high load-bearing capacity, good ductility, and energy consumption capacity. This paper established the post-fire seismic analysis model of SRCFST with a circular-cased H section using the sequential coupled thermal-stress method by ABAQUS. The P-Δ curve, stiffness, ductility, and energy dissipation were calculated. Then, the post-fire seismic performance of CFST members was compared while keeping the total steel ratio constant, and it revealed that the SRCFST had superior ductility to CFST. Finally, the ductility coefficient and skeleton curve were parametrically evaluated. The results of the study showed that the effects of heating time (th), axial compression ratio (n), slenderness ratio (λ), and steel tube ratio (αt) on the skeleton line of SRCFST columns are more significant; the axial compression ratio (n), slenderness ratio (λ), and steel tube ratio (αt) have a negative influence on the ductility subjected to post-fire.

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Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire

Cited by 22 publications

References 31 publications

Investigation on fire resistance of steel-reinforced concrete-filled steel tubular columns subjected to non-uniform fire

Investigation on fire resistance of steel-reinforced concrete-filled steel tubular columns subjected to non-uniform fire

Experimental evaluation of the load‐bearing capacity of steel‐reinforced CFST stub columns under a fire scenario

Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire

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