Experimental study on partially concrete-filled steel tubular columns

Ishizawa, Toshiki; Nakano, Tatsuya; Iura, Masashi

doi:10.12989/scs.2006.6.1.055

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…In the past, the structural responses of CFT columns under axial compression load have been the subject of many investigation, such as Uy [10], Giakoumelis and Lam [11], Ishizawa et al [12], Chen et al [13], Dundu [14], Lu et al [15] and many other researchers. Based on the review of the previous researches, the experimental investigation focuses mostly on the normal-strength and highstrength CFT members.…”

Section: Introductionmentioning

confidence: 99%

Strength and Axial Behavior of Cellular Lightweight Concrete-Filled Steel Rectangular Tube Columns under Axial Compression

Thumrongvut

Tiwjantuk

2018

MSF

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This paper presents the experimental results on the strength and axial behavior of rectangular steel tube columns filled with cellular lightweight concrete (CLC) under axial compression. A total of 24 specimens, including 6 reinforced cellular lightweight concrete (RCLC) columns and 18 cellular lightweight concrete-filled steel tube (CLCFT) columns are investigated. The nominal dimension of the rectangular columns are 150×75 mm in cross-section and 750 mm in height. The parameter used in all tests are the ultimate compressive strengths of the CLC, which are 15 MPa, 20 MPa and 25 MPa, and the wall thicknesses of steel tubes, which are 3.0 mm, 4.5 mm and 6.0 mm. All specimens are prepared and loaded concentrically in axial compression to failure. The results of these tests demonstrated that the CLCFT columns have a linear behavior up to the approximately 80-90% of their maximum compressive load. Then, the behavior of the columns is nonlinear. The nonlinear behaviors are due to the crushing of the concrete core and local wall buckling of the steel hollow tube. In addition, it is found that the CLCFT columns have high axial deformability at the failure when compared to the reference RCLC columns. Finally, by comparing the maximum compressive load of the test results with those obtained from the ACI composite design equation, the comparison results show that calculation formula in ACI code can be applied to compute the axial capacity of CLCFT columns under axial compression.

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Section: Introductionmentioning

confidence: 99%

Strength and Axial Behavior of Cellular Lightweight Concrete-Filled Steel Rectangular Tube Columns under Axial Compression

Thumrongvut

Tiwjantuk

2018

MSF

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“…Candidate, Assistant Professor, E-mail: qsk991@uowmail.edu.au b Ph.D., Senior Lecturer, E-mail: msheikh@uow.edu.auil concrete may expose steel reinforcement to the air and humidity, which may increase the rate of corrosion in the steel reinforcement. Initially, steel tubes were investigated for strengthening and retrofitting of damaged RC columns and also, an alternative of steel RC columns (Zhao et al 2002, Johansson 2003, Han et al 2004, Sakino et al 2004, Ishizawa et al 2006, Lee 2007, Choi and Xiao 2010, Woo et al 2010, Park and Choi 2013and Aslani et al 2015. However, steel as confinement reinforcement has few disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model

Khan¹,

Sheikh²,

Hadi³

2016

Steel Compos. Struct.

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Concrete Filled Fibre Reinforced Polymer Tube (CFFT) for new columns construction has attracted significant research attention in recent years. The CFFT acts as a formwork for new columns and a barrier to corrosion accelerating agents. It significantly increases both the strength capacity (Strength enhancement ratio) and the ductility (Strain enhancement ratio) of reinforced concrete columns. In this study, based on predefined selection criteria, experimental investigation results of 134 circular CFFT columns under axial compression have been compiled and analysed from 599 CFFT specimens available in the literature. It has been observed that actual confinement ratio (expressed as a function of material properties of fibres, diameter of CFFT and compressive strength of concrete) has significant influence on the strength and ductility of circular CFFT columns. Design oriented models have been proposed to compute the strength and strain enhancement ratios of circular CFFT columns. The proposed strength and strain enhancement ratio models have significantly reduced Average Absolute Error (AAE), Mean Square Error (MSE), Relative Standard Error of Estimate (RSEE) and Standard Deviation (SD) as compared to other available strength and strain enhancement ratios of circular CFFT column models. The predictions of the proposed strength and strain enhancement ratio models match well with the experimental strength and strain enhancement ratios investigation results in the compiled database. (Received April 21, 2016, Revised June 22, 2016, Accepted June 23, 2016 Abstract. Concrete Filled Fibre Reinforced Polymer Tube (CFFT) for new columns construction has attracted significant research attention in recent years. The CFFT acts as a formwork for new columns and a barrier to corrosion accelerating agents. It significantly increases both the strength capacity (Strength enhancement ratio) and the ductility (Strain enhancement ratio) of reinforced concrete columns. In this study, based on predefined selection criteria, experimental investigation results of 134 circular CFFT columns under axial compression have been compiled and analysed from 599 CFFT specimens available in the literature. It has been observed that actual confinement ratio (expressed as a function of material properties of fibres, diameter of CFFT and compressive strength of concrete) has significant influence on the strength and ductility of circular CFFT columns. Design oriented models have been proposed to compute the strength and strain enhancement ratios of circular CFFT columns. The proposed strength and strain enhancement ratio models have significantly reduced Average Absolute Error (AAE), Mean Square Error (MSE), Relative Standard Error of Estimate (RSEE) and Standard Deviation (SD) as compared to other available strength and strain enhancement ratios of circular CFFT column models. The predictions of the proposed strength and strain enhancement ratio models match well with the experimental strength and strain enhancement ratios investigation res...

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Novel fiber-based seismic response modelling and design method of partially CFST bridge piers considering local buckling effect

Xiang

Feng

2023

Soil Dynamics and Earthquake Engineering

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Experimental study on partially concrete-filled steel tubular columns

Cited by 5 publications

References 12 publications

Strength and Axial Behavior of Cellular Lightweight Concrete-Filled Steel Rectangular Tube Columns under Axial Compression

Strength and Axial Behavior of Cellular Lightweight Concrete-Filled Steel Rectangular Tube Columns under Axial Compression

Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model

Novel fiber-based seismic response modelling and design method of partially CFST bridge piers considering local buckling effect

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