Numerical study of confinement in short concrete filled steel tube columns

Gupta, Pramod Kumar; Singh, Heaven

doi:10.1590/s1679-78252014000800010

Cited by 18 publications

(9 citation statements)

References 11 publications

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“…It is concluded that, the overall load-deflection performance and the deformed shape of the CFST column remain unchanged regardless of the end friction between the compression member and the beam (or platen) above it. Even for high end friction value of 0.5 negligible change in the result parameters was detected for short columns [17]. 2017) the consideration of cross-section for Octagonal tubular cross sections have been found to have greater local buckling resistance and bond strength than rectangular tubular cross-sections [44,25].…”

Section: Literature Surveymentioning

confidence: 95%

Bond strength characterization of concrete filled steel tube as structural member

Singh

Gupta

Jawaid

2022

EJSE

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Studies done by the previous researchers in Concrete Filled Steel Tubes (CFST) have a significant focus on the bond performance of CFST. This paper includes studies on the evaluation of critical parameters such as interface condition, interface length, infilled concrete strength, and end friction and cross-section dimension in these members. It is found that the effect of interface length had very little impact on the bond stress as it shows a promising value when the interface length is in the range of 200-800 mm and after that, it gets shifted and reduced for larger interface length. But this decrease in the bond stress is affiliated with other parameters, like macro-locking, infilled concrete compressive strength distinctly affects the mean interface bond strength for the sample in the regular condition, the interface bond strength for the most part increases with infilled concrete strength. It is spotted that the friction coefficient of 0.15 is used at both column ends to provide the fixity and it becomes clear that the local buckling pattern of the stub column is independent of the end friction. In both categories of columns, the bond strength among the steel tube and infilled concrete reduced extraordinarily with increased cross-sectional dimension.

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Section: Literature Surveymentioning

confidence: 95%

Bond strength characterization of concrete filled steel tube as structural member

Singh

Gupta

Jawaid

2022

EJSE

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“…Selain itu, model plastisitas Von-Mises elasto-plastis dengan strain hardening digunakan untuk baja. Beberapa peneliti telah melakukan analisis elemen hingga tiga dimensi tabung baja diisi beton dengan menggunakan ANSYS [9], [11] dan ABAQUS [12], [13]. Model elemen hingga tiga dimensi juga digunakan untuk memprediksi tegangan residu yang disebabkan mesin [14].…”

Section: Pendahuluanunclassified

Pengaruh Model Analisa Elemen Hingga dan Sifat Material Terhadap Perilaku Struktural Tabung Baja Persegi Diisi Beton

Effendi

2021

JITS

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“…Hence, thinner steel tube can be utilized in STCC columns compared with the CFST ones. Gupta and Singh (2014) investigated the numerical behavior of short concrete filled steel tubular (CFST) columns by providing a 3-D finite element program and verifying the proposed model through comparison with the corresponding experimental specimens. It is observed that the value of radial confining pressure in the area adjacent to top and bottom platens is markedly higher than the value inbetween due to the end restraint provided by the machine platens.…”

Section: Akbar Haghinejad Mahdi Nematzadeh *mentioning

confidence: 99%

Three-Dimensional Finite Element Analysis of Compressive Behavior of Circular Steel Tube-Confined Concrete Stub Columns by New Confinement Relationships

Haghinejada

Nematzadeh

2016

Lat. Am. j. solids struct.

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This paper presents a nonlinear analysis of axially loaded steel tube-confined concrete (STCC) stub columns with new confinement relationships. For this aim, a 3-D finite element model of STCC columns using ABAQUS program is developed and validated against the experimental data. Proper material constitutive models are proposed and the confinement parameters of confined concrete are determined by matching the numerical results via trial and error. The parameters considered for quantitative verification of the FE model include five different factors indicating the behavior of STCC columns: compressive strength corresponding to steel yielding point, initial peak strength and ultimate strength as well as longitudinal to circumferential stress ratio of steel tube at steel yielding point and initial peak point. For the qualitative verification, the axial and lateral stress-strain relationships of STCC columns are taken into account. The comparison results indicate that the model can accurately predict the compressive behavior of STCC stub columns. Finally, a parametric study is also performed to evaluate the effect of tube diameter-to-wall thickness ratio (D/t), concrete compressive strength (fc) and steel yield strength (fy) on the compressive behavior of STCC columns. According to the results of the parametric study, the interface shear stress and lateral confining pressure are not affected by fc while significantly increase with decreasing D/t.

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Numerical study of confinement in short concrete filled steel tube columns

Cited by 18 publications

References 11 publications

Bond strength characterization of concrete filled steel tube as structural member

Bond strength characterization of concrete filled steel tube as structural member

Pengaruh Model Analisa Elemen Hingga dan Sifat Material Terhadap Perilaku Struktural Tabung Baja Persegi Diisi Beton

Three-Dimensional Finite Element Analysis of Compressive Behavior of Circular Steel Tube-Confined Concrete Stub Columns by New Confinement Relationships

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