Evaluation of passive confinement in CFT columns

Oliveira, Walter Luiz Andrade de; Nardin, Silvana De; Debs, Ana Lúcia Homce de Cresce El; Debs, Mounir Khalil El

doi:10.1016/j.jcsr.2009.11.004

Cited by 62 publications

(29 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main conclusion was that the ductility, more than carrying capacity, was the major benefit of confinement (Oliveira et al, 2009;Simões, 2008). The influence of the length-to-diameter ratio of concrete-filled tube columns also was analysed, showing a reduction of confinement benefits for slender columns (Oliveira et al, 2010). General views of the specimens tested by Oliveira et al (2009) andOliveira et al (2010) are shown in Figure 8.…”

Section: Composite Columnsmentioning

confidence: 99%

State of the art of steel–concrete composite structures in Brazil

Nardin¹,

Debs²

2013

Proceedings of the Institution of Civil Engineers - Civil Engin

Self Cite

View full text Add to dashboard Cite

Steel-concrete composite structures are now increasingly used in Brazil and are the subject of significant research by the country's leading universities. This paper summarises the typology, state of the art and usage of steelcomposite structures from a Brazilian perspective. It presents the concepts, definitions and design philosophy for basic structural elements, including composite slabs, beams and columns, and also for various types of connections.Summaries of the extensive research findings are presented for each composite element. The paper concludes with a call for all the research results to be condensed into a single design manual, which in turn will help Brazil's fastgrowing construction industry take full advantage of the benefits of composite construction techniques.

show abstract

Section: Composite Columnsmentioning

confidence: 99%

State of the art of steel–concrete composite structures in Brazil

Nardin¹,

Debs²

2013

Proceedings of the Institution of Civil Engineers - Civil Engin

Self Cite

View full text Add to dashboard Cite

show abstract

“…By doing this the compressive capacity of the RAC can be considerably increased due to the confinement effects at the ultimate condition (e.g. [10][11][12]), and the shrinkage and creep deformation can be reduced by 1/2-2/3 as the concrete core is under sealed condition (e.g. [13]).…”

Section: Introductionmentioning

confidence: 99%

Time-dependent behaviour of steel tubular columns filled with recycled coarse aggregate concrete

Geng

Wang

Chen

2016

Journal of Constructional Steel Research

View full text Add to dashboard Cite

“…Because of the radial confining pressure acting in the circular concrete core (Hatzigeorgiou, 2008;Johansson, 2002;Suthansa et al, 2001), circular CFST columns are much better confined than square and rectangular CFST columns (Lee et al, 2011;Oliveira et al, 2010) under uniaxial compression. Nevertheless, arching action will be developed in the plane of cross-section between the corners of the steel tube, where the restraint provided to concrete is the largest, due to tube bending.…”

Section: Introductionmentioning

confidence: 99%

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Ouyang¹,

2014

Magazine of Concrete Research

View full text Add to dashboard Cite

The existence of curvature can reduce the effective confining pressure within concrete-filled steel tube (CFST) columns under eccentric compression. The existing analysis method ignores such an effect and still treats the confining pressure as constant across the whole section as if it is under axial compression. In this paper, the authors have made significant improvements on the existing model, so that the curvature effect can be taken into account to properly interpret the non-linear behaviour of eccentrically loaded CFST columns. Meanwhile, shortening between two hinges is an important data output in test programmes of this type, which has been completely neglected by the existing analysis method. This improved method also provides calculation steps to track the value of shortening for each load increment. Unknown parameters in this new method are determined on the basis of data fitting of 87 specimens from previous researchers' test programmes. The following parameters are incorporated in this study: effective tube length (660–4670 mm), diameter of tube (76–600 mm), tube thickness (1·52–8·81 mm), yield strength of tube (256·4–517·0 MPa), cylinder strength of concrete (26·42–112·70 MPa) and eccentricity (9·4–300 mm). The load–axial displacement, load–deflection and moment–curvature curves predicted by the new method agree well with their measured counterparts in the tests.

show abstract

Evaluation of passive confinement in CFT columns

Cited by 62 publications

References 16 publications

State of the art of steel–concrete composite structures in Brazil

State of the art of steel–concrete composite structures in Brazil

Time-dependent behaviour of steel tubular columns filled with recycled coarse aggregate concrete

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Contact Info

Product

Resources

About