Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Ding, Fa‐xing; Liu, Jing; Liu, Xuemei; Yu, Zhenkun; Li, Dawen

doi:10.1016/j.tws.2015.04.020

Cited by 68 publications

(17 citation statements)

References 9 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Strength index (SI) is also used to compare the performance of the columns. SI is a very useful measure for composite action and confinement assessments in CFST columns and has been used in literature [5,27,33,34]. SI is defined as follows:…”

Section: Test Results and Discussionmentioning

confidence: 99%

Experimental behaviour of circular concrete filled steel tube columns and design specifications

Ekmekyapar

AL-Eliwi

2016

Thin-Walled Structures

146

View full text Add to dashboard Cite

Section: Test Results and Discussionmentioning

confidence: 99%

Experimental behaviour of circular concrete filled steel tube columns and design specifications

Ekmekyapar

AL-Eliwi

2016

Thin-Walled Structures

146

View full text Add to dashboard Cite

“…Innovative usage of composite columns, such as double skin CFST members [16][17][18], bimetallic tubes [19], or fiber-reinforced plastic tubes [20], is considered today. The investigation of the behavior of CFST stub columns with circular, square, and rectangular sections with the partially loaded cross-section was presented by Han, et al [21][22][23], Yang [24], and Ding [25]. The behavior of composite columns with the partially loaded area was considerably different from the fully loaded members, mainly due to the early development of the confining stresses in concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Reinforced Concrete Columns Strengthened with Steel Jacket and Concrete Infill

Landović

Bešević

2021

Applied Sciences

View full text Add to dashboard Cite

Experimental research on axially compressed columns made from reinforced concrete (RC) and RC columns strengthened with a steel jacket and additional fill concrete is presented in this paper. A premade squared cross-section RC column was placed inside a steel tube, and then the space between the column and the tube was filled with additional concrete. A total of fourteen stub axially compressed columns, including nine strengthened specimens and five plain reinforced concrete specimens, were experimentally tested. The main parameter that was varied in the experiment was the compressive strength of the filler concrete. Three different concrete compression strength classes were used. Test results showed that all three cross-section parts (the core column, the fill, and the steel jacket) worked together in the force-carrying process through all load levels, even if only the basic RC column was loaded. The strengthened columns exhibited pronounced ductile behavior compared to the plain RC columns. The influence of the test parameters on the axial compressive strength was investigated. In addition, the specimen failure modes, strain development, and load vs. deformation relations were registered. The applicability of three different design codes to predict the axial bearing capacity of the strengthened columns was also investigated.

show abstract

“…The infilled concrete can prevent the steel tubes from buckling inward, which can increase the critical local buckling strength, leading to the full utilization of the strength of the steel tube and the concrete. A large number of experimental and theoretical investigations into the performance of CFT columns have been carried out for decades (Abdalla et al, 2013; Abed et al, 2013; Bleich, 1952; Chang et al, 2013; Choi et al, 2017; Ding et al, 2015a, 2015b, 2018; Du et al, 2016; Ekmekyapar, 2016; Evirgen et al, 2014; Ge and Usami, 1992, 1994; Khan et al, 2017; Kwan et al, 2016; Kwon and Jeong, 2014; Liew et al, 2016; Montuori and Piluso, 2015; Ouyang et al, 2017; Timoshenko and Gere, 1961; Yang et al, 2015; Zhao et al, 2018). According to these studies, the confinement effects of square or rectangular concrete-filled sections are much less than those of circular CFT columns.…”

Section: Introductionmentioning

confidence: 99%

Local buckling of rectangular concrete-filled steel tubular columns with binding bars under eccentric compression

Wan

Cai

Long

et al. 2020

Advances in Structural Engineering

View full text Add to dashboard Cite

Based on the energy method, this article presents a theoretical study on the elastic local buckling of steel plates in rectangular concrete-filled steel tubular columns with binding bars subjected to eccentric compression. The formulas for elastic local buckling strength of the steel plates in eccentrically loaded rectangular concrete-filled steel tubular columns with binding bars are derived, assuming that the loaded edges are clamped and the unloaded edges of the steel plate are elastically restrained against rotation. Then, the experimental results are compared with these formulas, which exhibits good agreement. Subsequently, the formulas are used to study the elastic local buckling behavior of steel plates in rectangular concrete-filled steel tubular columns with binding bars under eccentric compression. It is found that the local buckling stress of steel plates in eccentrically loaded rectangular concrete-filled steel tubular columns with binding bars is significantly influenced by the stress gradient coefficient, width-to-thickness ratio, and the longitudinal spacing of binding bars. With the decrease of width–thickness ratios or the longitudinal spacing of binding bars or with the increase of the stress gradient coefficient, the local buckling stress increases. Furthermore, the influence of the longitudinal spacing of binding bar is more significant than the stress gradient coefficients. Finally, appropriate limitation for depth-to-thickness ratios ( D/ t), width-to-thickness ratios ( B/ t), and binding bar longitudinal spacing at various stress gradient coefficients ( α0) corresponding to different cross-sectional aspect ratios ( D/ B) are suggested for the design of rectangular concrete-filled steel tubular columns with binding bars under eccentric compression.

show abstract

Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Cited by 68 publications

References 9 publications

Experimental behaviour of circular concrete filled steel tube columns and design specifications

Experimental behaviour of circular concrete filled steel tube columns and design specifications

Experimental Research on Reinforced Concrete Columns Strengthened with Steel Jacket and Concrete Infill

Local buckling of rectangular concrete-filled steel tubular columns with binding bars under eccentric compression

Contact Info

Product

Resources

About