Structural behavior of partially encased composite columns under axial loads

Pereira, Margot Fabiana; Nardin, Silvana De; Debs, Ana Lúcia Homce de Cresce El

doi:10.12989/scs.2016.20.6.1305

Cited by 35 publications

(11 citation statements)

References 10 publications

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“…The ultimate bearing capacity (Nu) of axially-loaded octagonal PEC columns can therefore be illustrated as: (13)   …”

Section:  mentioning

confidence: 99%

Experimental and Numerical Investigation of Octagonal Partially Encased Composite Columns Subject to Axial and Torsion Moment Loading

Jamkhaneh¹,

Kafi²

2017

CivileJournal

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This paper includes experimental and numerical study of the octagonal partially encased composite (PEC) columns specimens under axial and torsion loading. The major difference between them was the concrete reinforcement details. The parameters investigated in the experimental and numerical study were the type of reinforcement details, the failure mode, width-to-thickness ratio of flange, transverse links spacing and diameter. The results were presented as loaddeformation curves. Numerical model was validated using finite element method and the results indicated acceptable accuracy with tests results in the form of capacity and ductility. In the analytical phase, the experimental results in the compressive loading were compared with those obtained from CSA S16-14 and EN 1994-1-1 equations. Also, the new concrete confinement factor in proportion to the web width to thickness ratio was presented to octagonal PEC columns under pure compressive load. Furthermore, different types of retrofit of cross-shaped steel column including concrete encasement, use of stiffener plates and transverse links were investigated in this research. Results revealed that concrete confinement and use of transverse links had respectively the most and the least effect on increasing torsional capacity of the specimens.

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“…The ultimate bearing capacity (Nu) of axially-loaded octagonal PEC columns can therefore be illustrated as: (13)   …”

Section:  mentioning

confidence: 99%

Experimental and Numerical Investigation of Octagonal Partially Encased Composite Columns Subject to Axial and Torsion Moment Loading

Jamkhaneh¹,

Kafi²

2017

CivileJournal

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“…It was also noted that, at the age of 180 days, the axial load capacity of mixed tubes filled with the three types of concrete, increased respectively by 13.98%, 3.71% and 3.10% compared to those found at 28 days age. Weiwei Wang and al [6] Handel and al [12] have noted that the increase in ultimate load capacity of thin-walled partially encased sections filled with slag concrete under axial loading attributed to the higher strength of the concrete. Also, it is confirmed that the length and thickness of the steel profile have a significant effect on the ultimate strength and failure mode.…”

Section: Introductionmentioning

confidence: 99%

Load bearing capacity of thin-walled rectangular and I-shaped steel sections of short both empty and concrete-filled columns

Bouaricha

Handel

Boutouta

et al. 2021

Frattura Ed Integrità Strutturale

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In this experimental work, strength results obtained on short columns subjected to concentric loads are presented. The specimens used in the tests have made of cold-rolled, thin-walled steel. Twenty short columns of the same cross-section area and wall thickness have been tested as follows: 8 empty and 12 filled with ordinary concrete. In the aim to determine the column section geometry with the highest resistance, three different types of cross-sections have been compared: rectangular, I-shaped unreinforced and, reinforced with 100 mm spaced transversal links. The parameters studied are the specimen height and the cross-sectional steel geometry. The registered experimental results have been compared to the ultimate loads intended by Eurocode 3 for empty columns and by Eurocode 4 for compound columns. These results showed that a concrete-filled composite column had improved strength compared to the empty case. Among the three cross-section types, it has been found that I-section reinforced is the most resistant than the other two sections. Moreover, the load capacity and mode of failure have been influenced by the height of the column. Also, it had noted that the experimental strengths of the tested columns don’t agree well with the EC3 and EC4 results.

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“…Concrete‐filled double steel tubular (CFDST) column, which consists of two concentric steel tubes and the filled concrete, is a new member in the whole concrete‐filled steel tube (CFST) family . Similar to the composite columns that combine the advantages of steel and concrete, CFDST columns have been actively researched and widely implemented. CFDST column can effectively reduce the cross‐section area and significantly improve mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

Beam‐column connections of concrete‐filled double steel tubular frame structures

Zhang

Zhou

2019

Structural Design Tall Build

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Four types of concrete-filled double steel tubular (CFDST) columns were introduced in this paper, which had the advantage of higher bearing capacity, stronger stiffness, and better fire-resistant and explosion-resistant performance. To research a reasonable form of beam-column connection is the top priority in CFDST frame structures. After a brief historical background concerning the development of CFDST columns, this study conducted an investigation and comparison of several existing beam-column connections. The constructional detail and force transfer mechanism of each beam-column connection were analyzed according to the present research achievements. Several finite element models were established to discuss the various connection configurations and main factors affecting their behaviors. In general, connection design can take full advantage of the characteristic of double tubes in CFDST structure, so a series of construction improvements for joint design parameters in CFDST frame structures was proposed to improve the seismic performance and the relevant study for the future work was also discussed.

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Structural behavior of partially encased composite columns under axial loads

Cited by 35 publications

References 10 publications

Experimental and Numerical Investigation of Octagonal Partially Encased Composite Columns Subject to Axial and Torsion Moment Loading

Experimental and Numerical Investigation of Octagonal Partially Encased Composite Columns Subject to Axial and Torsion Moment Loading

Load bearing capacity of thin-walled rectangular and I-shaped steel sections of short both empty and concrete-filled columns

Beam‐column connections of concrete‐filled double steel tubular frame structures

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