Stress–strain model for concrete in FRP-confined steel tubular columns

Teng, Jinguang; Hu, Y. M.; Yu, Tao

doi:10.1016/j.engstruct.2012.11.001

Cited by 188 publications

(60 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The structural behavior of FRP-confined CFSTs has recently been investigated systematically by the authors' group [161][162][163]. Within this study, several series of laboratory tests were conducted to examine the behavior of FRP-confined CFSTs under monotonic axial compression, cyclic axial compression and the combined action of constant axial compression and cyclic lateral loading.…”

Section: Frp Confinement Of Concrete-filled Steel Tubesmentioning

confidence: 99%

Strengthening of steel structures with fiber-reinforced polymer composites

Teng

Fernando

2012

Journal of Constructional Steel Research

Self Cite

517

179

View full text Add to dashboard Cite

Section: Frp Confinement Of Concrete-filled Steel Tubesmentioning

confidence: 99%

Strengthening of steel structures with fiber-reinforced polymer composites

Teng

Fernando

2012

Journal of Constructional Steel Research

Self Cite

517

179

View full text Add to dashboard Cite

“…There are more experimental and analytical studies on the compressive behavior of the CFST columns strengthened with FRP in [10][11][12]. To obtain a further understanding of the confining mechanism of FRP wrap in FCCFST columns, Teng et al [13] developed a stress-strain model for concrete in FCCFST columns under compression through theoretical analysis. The strain efficiency of FRP jackets in FCCFST columns under axial compression was studied through nine tests and finite element modeling by Li et al [14].…”

Section: Introductionmentioning

confidence: 99%

Behavior of FRP-Confined Concrete-Filled Steel Tube Columns

2014

Polymers

101

View full text Add to dashboard Cite

This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap can effectively confine the concrete expansion and delay the local buckling of the steel tube. Both the load capacity and the axial deformation capacity of concrete-filled steel tube columns can be substantially enhanced with FRP confinement. A model is proposed to predict the load capacity of the FRP-confined concrete-filled steel tube columns. The predicted results are generally in good agreement with the experimental ones obtained in this study and in the literature.

show abstract

“…The steel tube can not only be served as permanent formwork but also provide welldistributed confinement to the core concrete, whereas the core concrete delays or prevents the tube's local buckling and forces the tube to buckle outwards rather than inwards. In recent years, Lai and Ho [1,2], Ding et al [3,4], Wang et al [5], and Teng et al [6] have proposed a series of confining schemes (e.g., external rings, stirrups, stiffeners, and FRP) to further improve the load bearing capacity and ductility of the CFST columns in compression. Meanwhile, a measure to enhance the performance of the CFST columns (i.e., under the premise of keeping the same amount of steel, reducing the wall thickness of the steel tube, simultaneously arranging steel stirrups in the tube, and a gap between the tube and the stirrups being left) has also been proposed by the authors.…”

Section: Introductionmentioning

confidence: 99%

10.28: Fire performance of concrete filled steel tubular columns with built‐in stirrups

Zang

Zhang³

2017

ce papers

View full text Add to dashboard Cite

Two concrete filled steel tubular columns with built-in stirrups (i.e., Specimens 1 and 2) and one control column (i.e., concrete filled steel tubular column without built-in stirrups, Specimen 3) were exposed to the ISO834 standard fire, and fire behaviors of the three columns were investigated and compared with each other. The steel usage of Specimen 1 (2) (i.e., total weight of the steel tube and stirrups) was the same as that of Specimen 3 (i.e., weight of the steel tube). The distance between the stirrup's centerline and inner surface of the steel tube was 20mm for Specimen 1, and 50mm for Specimen 2. The height and outer diameter of all the three columns were, respectively, 3800mm and 320mm. The axial load applied to Specimens 1 and 2 was identical with that applied to Specimen 3. Test results show that when the steel usage keeps unchanged, the fire endurance of the concrete filled steel tubular column with built-in stirrups is much longer than that of the column without built-in stirrups. Finally, a finite element analysis (FEA) model was developed and verified against the experimental results, and a parametric study has been preliminarily performed to reveal the fire performance of the concrete filled steel tubular columns with built-in stirrups.Keywords: concrete filled steel tube, fire performance, built-in stirrup 2 EXPERIMENTAL PROGRAM Specimen preparation and material propertiesSchematic diagrams of two CFST columns with built-in stirrups (Specimen 1 and Specimen 2) and one conventional CFST column (Specimen 3, control specimen) are shown in Fig. 1. All the three

show abstract

Stress–strain model for concrete in FRP-confined steel tubular columns

Cited by 188 publications

References 25 publications

Strengthening of steel structures with fiber-reinforced polymer composites

Strengthening of steel structures with fiber-reinforced polymer composites

Behavior of FRP-Confined Concrete-Filled Steel Tube Columns

10.28: Fire performance of concrete filled steel tubular columns with built‐in stirrups

Contact Info

Product

Resources

About