Concrete-filled double-skin aluminum circular hollow section stub columns

Zhou, Feng; Young, Ben

doi:10.1016/j.tws.2018.09.037

Cited by 37 publications

(54 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The proposed composite column design equations which were developed by Zhou and Young (2018) for concrete-filled double-skin aluminium stub columns with CHS as both outer and inner skins were used to calculate the design strengths of concrete-filled double-skin (CHS outer and SHS inner) aluminium tubular stub columns. The proposed design strengths are generally conservative and reliable for all the specimens and are more accurate than the predictions from the American specifications.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, it was ensured that the column failure would not occur at the ends of the columns. This method of strengthening the ends of the columns by FRP has been used by Zhou and Young (2018) for concrete-filled double-skin aluminium columns with CHS as both outer and inner skins. The ends of the columns were then cast in plaster to ensure the load was applied uniformly on the concrete and the aluminium CHS and SHS tubes simultaneously.…”

Section: Experimental Investigationmentioning

confidence: 99%

“…The material properties of the aluminium tube specimens were determined by tensile coupon tests. The same batch of aluminium CHS conducted by Zhou and Young (2018) was also used in this study. The tensile coupons were taken from the curved faces of the CHS tubes in the longitudinal direction.…”

Section: Experimental Investigationmentioning

confidence: 99%

“…This allowed stress relaxation associated with plastic straining to take place. The material properties obtained from the tensile coupon tests for aluminium CHS (Zhou and Young, 2018) are summarized in Table 1, which includes the static 0.2% tensile proof stress ( σ 0.2 ), static tensile strength ( σ u ), initial Young’s modulus ( E o ) and elongation after fracture ( ε f ) based on a gauge length of 25 mm.…”

Section: Experimental Investigationmentioning

confidence: 99%

“…The applicability of the design rules was evaluated by comparing the composite column strengths obtained from the tests ( P Exp ) and predicted from the finite element analysis (FEA; P FEA ) with the design strengths ( P AA ) calculated using the American specifications (American Concrete Institute (ACI), 2008; The Aluminum Association (AA), 2005) for aluminium and concrete structures. The proposed design equations, which were developed by Zhou and Young (2018) for concrete-filled double-skin aluminium CHS stub columns, were also used to calculate the design strengths and compared with the experimental and numerical results of concrete-filled double-skin (CHS outer and SHS inner) aluminium tubular stub columns obtained in this study. The proposed design equations accurately predicted the ultimate strengths of the concrete-filled double-skin aluminium stub columns with CHS as the outer skin and SHS as the inner skin.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Compressive strengths of concrete-filled double-skin (circular hollow section outer and square hollow section inner) aluminium tubular sections

Zhou

Young

2019

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

Experimental and numerical investigations of concrete-filled double-skin aluminium stub column with a circular hollow section as the outer skin and a square hollow section as the inner skin are presented in this article. A test program was carried out to study the influences of aluminium tube geometric dimensions and concrete strength on structural performance and strength of composite columns. A series of composite columns was tested on outer circular hollow section tubes and inner square hollow section tubes; the spaces between them had been filled with concrete of different nominal cylinder strengths of 40, 70 and 100 MPa. The tubes were fabricated by extrusion using 6061T6 heat-treated aluminium alloy having a nominal 0.2% proof stress of 240 MPa. A non-linear finite element model was developed and verified against experimental results. The test and numerical results were compared with the design strengths to evaluate the applicability of the design rules in the American specifications for aluminium and concrete structures. In addition, the proposed design equations, developed by the authors for concrete-filled double-skin aluminium tubular stub columns with circular hollow section as both outer and inner skins, were used to calculate the design strengths and compared with the experimental and numerical results obtained in this study. The proposed design equations also predicted the ultimate strengths of the concrete-filled double-skin aluminium tubular stub columns accurately with circular hollow section as the outer skin and square hollow section as the inner skin.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Experimental Investigationmentioning

confidence: 99%

Section: Experimental Investigationmentioning

confidence: 99%

Section: Experimental Investigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Compressive strengths of concrete-filled double-skin (circular hollow section outer and square hollow section inner) aluminium tubular sections

Zhou

Young

2019

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

Structural response of aluminium alloy concrete filled tubular columns

et al. 2021

View full text Add to dashboard Cite

There is an increasing trend of using structural aluminium within the construction industry, due to its superior mechanical properties, such as high strength‐to‐weight ratio and high resistance to corrosion. The use of aluminium combined with concrete can be advantageous in terms of the resultant structural capacity. Currently, the design standards for the structural use of aluminium are substantially conservative and less exhaustive, which limits the full exploitation of aluminium as a structural material. This paper aims at developing more reliable structural design specifications based on experimental testing of aluminium‐concrete composite columns. A series of specimens comprising concrete‐filled aluminium hollow sections were experimentally investigated. Square hollow sections and rectangular hollow sections with different aspect ratios were considered. The hollow sections employed 6082‐T6 aluminium alloy and were filled with concrete of C30 grade. The specimens were subjected to gradually increasing axial compressive loading until their failure. The behaviour of the specimens was observed through continuous monitoring and recording of the strain and displacement through instrumentation mounted on the specimens at critical locations. The experimentally obtained load capacities were compared to those predicted by European design specifications. Conclusions with regards to the structural efficiency of concrete‐filled aluminium alloy columns are drawn and design recommendations in line with the observed structural response are made.

show abstract

Performance analysis and design of circular high‐strength concrete‐filled double‐skin aluminum tubular short columns under axial loading

Yan

Ahmed

Hassanein

et al. 2023

Structural Concrete

View full text Add to dashboard Cite

This study investigates the performance and design of high‐strength circular concrete‐filled double‐skin aluminum tubular (CFDAT) columns under axial loading. A new fiber element (FBE) model incorporating a new lateral confinement model is developed that considers the confinement effects and material nonlinearities. A new strength degradation factor is proposed for determining the postpeak behavior of the confined concrete in CFDAT circular columns. Existing experimental results are used to validate the accuracy of the predicted ultimate strength and axial load‐strain () curves of CFDAT columns under axial loading. A comparison of the predictions of the ultimate strength and curves of CFDAT columns using the proposed lateral confinement model is made against the prediction using the three‐dimensional finite element modeling and the existing lateral pressure model of CFDAT columns proposed by other researchers. The performance of the CFDAT columns under axial loading is investigated using a detailed parametric study. The accuracy of existing empirical formulas given in various design standards for conventional concrete‐filled steel tubular columns as well as given by another researcher in predicting the ultimate strength of CFDAT columns is examined. Finally, a simple design formula is proposed and validated against the experimental and numerical results obtained from this study. It is found that the proposed FBE model and the simplified model developed in this study can accurately predict the performance of CFDAT columns under axial loading.

show abstract

Concrete-filled double-skin aluminum circular hollow section stub columns

Cited by 37 publications

References 16 publications

Compressive strengths of concrete-filled double-skin (circular hollow section outer and square hollow section inner) aluminium tubular sections

Compressive strengths of concrete-filled double-skin (circular hollow section outer and square hollow section inner) aluminium tubular sections

Structural response of aluminium alloy concrete filled tubular columns

Performance analysis and design of circular high‐strength concrete‐filled double‐skin aluminum tubular short columns under axial loading

Contact Info

Product

Resources

About