Experimental study on residual axial bearing capacity of UHPFRC-filled steel tubes after lateral impact loading

Mi, Yongtao; Liu, Zhongxian; Wang, Wei Qiang; Yang, Yekai; Wu, Chengqing

doi:10.1016/j.istruc.2020.04.032

Cited by 25 publications

(11 citation statements)

References 45 publications

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“…Furthermore, the study included six major parameters (1) type of concrete, (2) ratio of steel, (3) form of section, (4) ratio of axial load, (5) impact energy and (6) subjected or not subjected to impact loading. Finally, Mi et al [3] has observed the below:…”

Section: Concrete Filled Double Skin Steel Tubular (Cfdst) Structural Elementsmentioning

confidence: 90%

“…Mi et al [3] did an experimental investigation on ten CFST samples to determine the residual axial bearing capacity (Rabc) under lateral impact load. Besides, the ten CFST samples consisted of seven Concrete-Filled Double-skin steel tubes (CFDST) and three normal single skin CFST samples.…”

Section: Concrete Filled Double Skin Steel Tubular (Cfdst) Structural Elementsmentioning

confidence: 99%

“…As such, each study proposed recommendations in accordance to the analysed variables. For example, a significant achievement in the field was identified by Wang et al [2] and Mi et al [3] by testing steel tubes filled with UHPFRC under impact loads. Moreover, Wang et al [2] and Mi et al [3] has determined that by filling the steel tubes with UHPFRC increases the bearing capacity, increases the lateral impact resistance, improves the residual performance significantly, reduces local indentation and deflections after impact.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a significant achievement in the field was identified by Wang et al [2] and Mi et al [3] by testing steel tubes filled with UHPFRC under impact loads. Moreover, Wang et al [2] and Mi et al [3] has determined that by filling the steel tubes with UHPFRC increases the bearing capacity, increases the lateral impact resistance, improves the residual performance significantly, reduces local indentation and deflections after impact. In addition, Alam et al [4] has tested various CFST columns externally reinforced with FRP materials with different number of layers.…”

Section: Introductionmentioning

confidence: 99%

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Circular Double Skin Stainless Steel Tubular Column Filled With Uhpfrc Subjected to Impact Load

Rahim

2021

Global J. Civ. Eng.

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Concrete filled steel tube (CFST) column is an important type of structural member and its protective design is essential to enhance its structural performance under various dynamic loads. Previously carried out studies on CFST columns tried to determine how to improve their structural response under various loadings, such as axial compression, lateral impact, blast, seismic, etc. Apart from investigations on transverse impact loading, the majority of the other studies on CFST under various loads established solutions and protective measures. Therefore, this study aim is to improve the performance of CFST under transverse impact loads. The geometrical and mechanical properties, boundary conditions, impact loading and dynamic explicit analysis employed in that study. This paper proposes a novel design in terms of cross-sectional configuration and smart materials to be applied on the CFST in order to improve its performance under lateral impact loading. The proposed investigation is exclusively numerical and its results were verified with the experimental results from literature. The considered three main variables were including (1) concrete-filled double skin steel tubular – CFDST with both first sandwich layer and internal carbon steel tube filled with normal strength concrete – NSC, (2) CFDST with first sandwich layer filled with Ultra High-Performance Fiber-Reinforced Concrete – UHPFRC. a. The parameters including failure modes, maximum mid-span deflection, and residual displacements were presented.

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Section: Concrete Filled Double Skin Steel Tubular (Cfdst) Structural Elementsmentioning

confidence: 90%

Section: Concrete Filled Double Skin Steel Tubular (Cfdst) Structural Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Circular Double Skin Stainless Steel Tubular Column Filled With Uhpfrc Subjected to Impact Load

Rahim

2021

Global J. Civ. Eng.

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“…In addition, CFST columns had lower maximum deflection under impact load when compared to hollow tubes (Figures 30,31). Feng et al [165] tested 36 circular stainless-steel tubes under in-plane bending. Moreover, the specimens had two variables, for example, the first variable was between hollow and concrete filled stainless steel tubes and the second variable was bare/ unstrengthen specimens and CFRP strengthened specimens.…”

mentioning

confidence: 99%

Literature Review: Concrete Filled Steel Tubes Under Transverse Impact Loading

Rahim¹

2021

CTCSE

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Research advances in fiber‐reinforced concrete‐filled steel tube columns

Liu,

Ma,

et al. 2024

Structural Design Tall Build

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SummaryFiber‐reinforced concrete‐filled steel tube (CFST) adopts the microskeleton and bridging effect of fibers, thereby optimizing the confinement effect between the steel tube and concrete core while reducing the concrete core friability. This structure offers a viable solution for solving the interface disengagement and insufficient ductility problems of conventional CFSTs. For further theoretical research and engineering application, the mechanical properties of fiber‐reinforced CFSTs under different loading conditions are reviewed. The research results are summarized, and future research scopes are suggested. The literature review shows that adding fibers improves the ductility of CFSTs significantly but the bearing capacity only slightly. The bond strength between steel tube and concrete core is enhanced by fibers, and the degradation in the bond strength is simultaneously delayed. However, in existing research, the mechanical properties and design method are still inadequate. More experimental works, further theoretical analyses, and numerical simulation should be undertaken to establish the quantitative relations between the generalized fiber parameters and structural performance of CFSTs. Future research should propose a unified design theory of fiber‐reinforced CFST structures based on service performance requirements.

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Experimental study on residual axial bearing capacity of UHPFRC-filled steel tubes after lateral impact loading

Cited by 25 publications

References 45 publications

Circular Double Skin Stainless Steel Tubular Column Filled With Uhpfrc Subjected to Impact Load

Circular Double Skin Stainless Steel Tubular Column Filled With Uhpfrc Subjected to Impact Load

Literature Review: Concrete Filled Steel Tubes Under Transverse Impact Loading

Research advances in fiber‐reinforced concrete‐filled steel tube columns

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