Strength behavior of circular concrete-filled steel tube stub columns under axial compression: A review

Wang, Xiuling; Fan, Fei; Lai, Jinxing

doi:10.1016/j.conbuildmat.2021.126144

Cited by 80 publications

(21 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Use of codes in predicting the axial capacity of CFST columns, experimental test data of 230 and 367 circular CFST columns were collected from the literature and their results were compared with code test results. EC4 showed conservative results in predicting the column capacity of the columns [36,37]. In comparison of experimental test results with design code results and proposed formulae, high accuracy is seen for the results predicted from proposed formulae.…”

Section: Literaturementioning

confidence: 99%

Experimental and numerical study on the effect of parameters in axial capacity of CFST columns with various L/D ratios

2022

IJATEE

View full text Add to dashboard Cite

Strength as well as behaviour of 16 circular concrete filled steel tube (CFST) sections submitted to axial compressive load was presented in this paper. Specimens having length to diameter (L/D) ratios of 3, 4, 5 and 6 with diameter to thickness (D/t) ratios of 38 as well as 25.33 with same outer diameter of 76 mm and two different wall thickness of 2 mm and 3 mm were considered to study the influence of column parameters and effect of confinement (Ꝣ). The ultimate capacities of CFST columns were compared with Eurocode-4, Australian Standards (AS 5100), American Code (AISC 360 -10) and Chinese code (DBJ13-51) predictions. Results showed that axial compressive loads of specimens with more wall thickness were found to be greater than lesser wall thickness specimens. The parameters that affect the column behaviour directly are relative slenderness ratio (λ) and L/D. Eurocode-4 results found to be conservative, Australian code and American Code underestimated while Chinese code overestimated the section capacity. Further, a finite element model of CFST specimens was developed with ABAQUS to check the accuracy of test results, buckling patterns and displacement curves.

show abstract

Section: Literaturementioning

confidence: 99%

Experimental and numerical study on the effect of parameters in axial capacity of CFST columns with various L/D ratios

2022

IJATEE

View full text Add to dashboard Cite

show abstract

“…Concrete-filled steel tube (CFST) columns have been widely used in heavy-duty structures or underground structures in recent decades, such as high-speed railway passenger stations, subways, and other underground structures [ 1 , 2 , 3 ]. The composition effect between the steel tube and infilled concrete in CFST columns enhances the axial strength and deformation performances.…”

Section: Introductionmentioning

confidence: 99%

Research on Confinement Effect of the Outer Steel Tube in Notched Square CFST Columns

Ding

et al. 2022

Materials

View full text Add to dashboard Cite

The outer steel tube in a concrete-filled steel tubular (CFST) column confines the core concrete and improves the compressive strength of the core concrete. When there is a notch damage in the tube, the confinement effect may be affected. The confinement effects of the notched steel tube in rectangular CFST columns were systematically investigated by using numerical approaches. Refined three-dimensional finite element models with advanced concrete constitutive relations were established. With the verified finite element modeling method, full-sized square CFST columns with horizontal, vertical, or diagonal notches at different locations of the steel tube were simulated. Stress distributions and deformation modes of the steel tube and core concrete were analyzed. Columns with a horizontal notch at the plate center location displayed a higher axial strength reduction than those with vertical notches. A parametric study was performed to investigate the influences of concrete strengths, steel strengths, steel ratios, notch length to column width ratios, and notch angles on the compressive strengths of the rectangular CFST columns. A practical design formula was proposed based on the obtained results. The proposed formula could effectively predict the influences of different notches on the confinement effect in the notched CFST columns.

show abstract

“…Concrete-filled steel tubular (CFST) structures are widely used in modern buildings due to their excellent mechanical and construction performance [1,2]. However, the mechanical performance of a CFST structure degrades significantly with increasing temperatures, and the structure cannot maintain its strength and stiffness at high temperatures [3].…”

Section: Introductionmentioning

confidence: 99%

Research on Thermal Response Behavior of the Intumescent Coating at High Temperature: An Experimental and Numerical Study

Zhang

2022

Buildings

View full text Add to dashboard Cite

Intumescent coating is able to provide effective fire protection with both practicality and aesthetics. In this study, expansion performance and thermal physical property experiments are firstly carried out to obtain the basic parameters at different temperatures. Then, the thermal response model of the concrete-filled steel tubular (CFST) structure under the protection of intumescent coating in a fire is established. Finally, based on the experimental data and thermal response model, the effects of initial thickness, expansion rate, intra-pore emissivity and reaction heat on the structure temperature are discussed in detail. The results of this study can provide guidance on intumescent coating formulation design, as well as fire protection design.

show abstract

Strength behavior of circular concrete-filled steel tube stub columns under axial compression: A review

Cited by 80 publications

References 116 publications

Experimental and numerical study on the effect of parameters in axial capacity of CFST columns with various L/D ratios

Experimental and numerical study on the effect of parameters in axial capacity of CFST columns with various L/D ratios

Research on Confinement Effect of the Outer Steel Tube in Notched Square CFST Columns

Research on Thermal Response Behavior of the Intumescent Coating at High Temperature: An Experimental and Numerical Study

Contact Info

Product

Resources

About