Experimental behaviours of steel tube confined concrete (STCC) columns

Han, Lin‐Hai; Yao, Guo-Huang; Chen, Zhibo; Yu, Qing

doi:10.12989/scs.2005.5.6.459

Cited by 86 publications

(37 citation statements)

References 11 publications

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“…Previous studies, conducted by Tommi et al [3][4][5], Sun et al [6], Aboutaha et al [7,8], Han et al [9,10], Liu et al [11][12][13] and Yu et al [14], have all focused on the compression behaviour or seismic performance of steel tube confined reinforced (or plain) concrete columns at ambient temperature.…”

mentioning

confidence: 99%

Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes

Liu

Yang

Gardner

2016

Journal of Constructional Steel Research

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Abstract:The post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes, also known as circular steel tube confined reinforced concrete (STCRC) columns, is investigated in this paper. A total of 12 experiments were conducted on eccentrically loaded circular STCRC stub columns after exposure to the ISO 834 standard fire, including both the heating and cooling phases. The temperatures across the tested sections, the axial load versus lateral displacement responses and the strains in the steel tubes were all measured and discussed. A finite element (FE) model was developed using the program ABAQUS, and validated against the test results from the present study, as well as related studies. Parametric studies were then performed to identify the influences of key parameters on the residual capacity of the eccentrically loaded STCRC columns, including eccentricity ratio, heating time, cross-sectional diameter, slenderness ratio, material strengths, steel tube to concrete area ratio and reinforcement ratio. Finally, a simplified method was proposed for predicting the residual load-bearing capacity of the eccentrically loaded STCRC columns after fire exposure.

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confidence: 99%

Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes

Liu

Yang

Gardner

2016

Journal of Constructional Steel Research

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“…Han and Yang [24] and Cai [25] used a uni ed theory and limit equilibrium theory, respectively, to establish formulas for the ultimate bearing capacity of concrete-lled steel tubular members. In steel casing-reinforced concrete components, the transverse bending characteristics and concrete tube have some similarities.…”

Section: Derivation Of the Ultimate Momentmentioning

confidence: 99%

Experimental Behavior of Concrete‐Filled Steel Tubular Members Subjected to Lateral Loads

Wang

Liu

2018

Advances in Materials Science and Engineering

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e findings of an experimental study that was undertaken to investigate the performance of concrete-filled steel tubular members subjected to lateral loads are reported in this study. Columns of pure concrete, concrete with reinforcing bars, and two steel tube thicknesses were considered. Two different tests were conducted in this study. One test is used to research the performance of steel tube-reinforced concrete model piles under a lateral loading. e other test is used to research the effect of the depth of rock embedment for piles embedded in a foundation to simulate actual engineering applications in an experimental study. According to these test results, a detailed analysis was carried out on the relationships, such as the stress-strain and load-displacement relationships for the specimen. ese tests show that the steel tube thickness and steel bars will significantly enhance the lateral bearing capacity and rigidity of the composite components. Additionally, the ultimate bending moment formula of a steel tubereinforced concrete pile is deduced. e comparison of the calculated results with the experimental results shows that this formula is applicable for this type of pile foundation.

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“…kt can be taken as 0.8 based on the experimental results. The effective lateral confining pressure ' r f can be calculated by ' r t e t r l f k f k k f   A total of 124 experimental axial strength values for tubed columns were collected from (Liu et al [3], Han et al [8], Sakino et al [10][11], Zhang et al [12], Yamamoto et al [13], and Qi et al [17]). The considered test parameters for the experimental results include width to tube thickness ratio D/t (20-162), concrete strength (28.5-132 MPa), and longitudinal reinforce ratio (0-6.5%).…”

Section: Axial Load-carrying Capacities Of Stub Sqaure Tubed Columnsmentioning

confidence: 99%

“…Steel tube confines concrete and hence increases the strength and ductility of concrete columns. Many researches have been devoted to the behavior of circular CFT columns, circular tubed columns, and circular tubed columns using oil or other materials to reduce friction coefficient under axial compression (Sakino et al [5], Orito et al [6], Fam et al [7], Han et al [8], and Liu et al [9]). The ductility performance of the circular composite columns tested above was fairly good.…”

Section: Introductionmentioning

confidence: 99%

Composite Effect of Stub Square Steel Tubed Columns Under Axial Compression

2018

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ABSTRACT:The in-filled concrete of square tube confined concrete columns (tubed columns for short) is non-uniformly confined and the effectiveness of its confinement is reduced, leading to a complex composite effect. This paper discusses key parameters, including friction, width-to-thickness ratio and chamfered corner radius of steel tubes, which would affect the confinement of square tubes on in-filled concrete. Eighteen specimens with large width-to-thickness ratio and six RC counterparts were tested under axial compression. Four main system parameters were considered in the tests: 1) width-to-thickness ratio (60-160); 2) types of steel tubes (galvanized and ordinary); 3) interface between tube and concrete (reduced friction and not); and 4) with and without reinforcement cage. It was found that the square tubed RC and plain RC columns were characterized by the shear failure mode, but the ductility performance of the tubed columns was much better than the RC specimens. The axial load-carrying capacities of the specimens with smaller friction were slightly lower than those with larger friction. A finite element analysis (FEA) model was developed to analyze the influence of friction and corner radius on of square tubed columns. An effective section confining model considering effective utilization index of square steel tubes was developed to predict the axial load resistances. The results are satisfactory when comparing the predictions to the experimental and nonlinear finite element analysis results.

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Experimental behaviours of steel tube confined concrete (STCC) columns

Cited by 86 publications

References 11 publications

Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes

Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes

Experimental Behavior of Concrete‐Filled Steel Tubular Members Subjected to Lateral Loads

Composite Effect of Stub Square Steel Tubed Columns Under Axial Compression

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