An efficient geometrically exact beam element for composite columns and its application to concrete encased steel I-sections

Gonçalves, Rodrigo; Carvalho, J.A. Rodrigues

doi:10.1016/j.engstruct.2014.05.042

Cited by 13 publications

(6 citation statements)

References 20 publications

(47 reference statements)

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“…The approach with entirely confined concrete in hollow steel profiles seems to have been the most thoroughly investigated method [8] and used in many different applications [9]. Goncalves and Carvalho [10] created a 2D Euler-Bernoulli method based on Eurocode 4. Here, I-section steel profiles were investigated as purely encased and as a semi-mold for a hybrid column type, where the concrete and additional reinforcement were poured in the space between the flanges of the I-profile.…”

Section: Introductionmentioning

confidence: 99%

Reduction of the Carbon Footprint of Precast Columns by Combining Normal and Light Aggregate Concrete

Halding

2022

Buildings

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To reduce the global emission of CO2 from the building industry, researchers, architects and manufacturers must consider new ways of constructing precast concrete buildings. Modern concrete columns and walls are not optimized to the applied load, and there is potential to save material. By creating a stronger column core and a lightweight concrete cover, it is possible to reduce the carbon footprint. A method is proposed to calculate such eccentrically loaded columns of two or more materials. The analytical method is developed for straight columns and columns with Entasis. Production of curved Entasis columns is possible by using textile molds due to the low mold pressure from the light aggregate concrete. Two column types are load tested to confirm the method. The CO2 emission is calculated for some column examples, and it shows that an optimized column geometry often leads to a reduced carbon footprint compared to regular columns. The concept is especially efficient for slender columns. Furthermore, the external light aggregate concrete layer ensures protection against fire if high-strength concrete is applied as the column core.

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Section: Introductionmentioning

confidence: 99%

Reduction of the Carbon Footprint of Precast Columns by Combining Normal and Light Aggregate Concrete

Halding

2022

Buildings

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“…Many studies have been carried out on the structural behavior of CFST columns [ 1–14 ] and CES composite. [ 15–22 ] Regarding CFST columns, Han et al studied a mechanical model for concrete‐filled SHS stub columns, [ 1 ] Starossek et al studied numerical analyses of the force transfer in CFST columns. [ 2 ] Liao et al studied the behavior of concrete‐encased CFST columns under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

“…[ 16 ] Begum et al studied the behavior of partially encased composite columns with high‐strength concrete. [ 17 ] Gonçalves et al studied a geometrically optimized beam element for CES I‐sections, [ 18 ] Kim et al studied the eccentric axial load capacity of high‐strength steel and concrete composite columns of various sectional shapes, [ 19 ] and Chen et al studied the role of concrete confinement of wide‐flange structural steel shapes in steel‐reinforced concrete columns under cyclic loading. [ 20 ] They stated that the placement of steel profiles in the stronger axis and weaker axis directions had a significant effect in terms of bending, and placement in the stronger axis direction can significantly reduce the winding reinforcement in the weaker direction.…”

Section: Introductionmentioning

confidence: 99%

“…[16] Begum et al studied the behavior of partially F I G U R E 1 Examples of concrete-encased steel (CES) column sections: (a) square section with I steel profile core and reinforcements, (b) circular section with I profile steel core, and (c) circular section with I profile steel core and reinforcement F I G U R E 2 Examples of concrete-filled steel tube (CFST) column sections: (a) square steel tube with concrete core and (b) circular steel tube with concrete core encased composite columns with high-strength concrete. [17] Gonçalves et al studied a geometrically optimized beam element for CES I-sections, [18] Kim et al studied the eccentric axial load capacity of high-strength steel and concrete composite columns of various sectional shapes, [19] and Chen et al studied the role of concrete confinement of wide-flange structural steel shapes in steel-reinforced concrete columns under cyclic loading. [20] They stated that the placement of steel profiles in the stronger axis and weaker axis directions had a significant effect in terms of bending, and placement in the stronger axis direction can significantly reduce the winding reinforcement in the weaker direction.…”

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confidence: 99%

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The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

Şermet

Ercan

Hökelekli

et al. 2021

Structural Design Tall Build

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This study outlines the cyclic loading response of a concrete-encased steel profile composite column-reinforced concrete beam connection. The experimental study performed for an interior joint. The column in joint was designed as a concreteencased I-steel profile composite column according to Eurocode 4, and the beam was designed as a regular reinforced concrete beam according to local building codes. In order to emphasize the effect of the joint design, different steel core orientations were used. The numerical analysis was performed using ABAQUS to predict behavior of the joint. The performance of the samples compared the load-carrying capacity, ductility, and failure type. Comparisons were made using load-displacement relationships and failure mechanisms. The analysis results showed that the failure was determined by the behavior of the beam, and the joint capacity depended on the shear capacity of the beam.

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“…A FE model was developed using ABAQUS by A nonlinear 2-D beam finite element was proposed by Goncalves and Carvalho (2014) to simulate the buckling behavior of SRC columns with I-sections.…”

Section: Numerical Simulation On Src Columnsmentioning

confidence: 99%

Behaviour of steel reinforced concrete columns with high strength materials

Cai¹

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High strength construction materials are now attractive for composite steel-concrete construction due to their economic and architectural advantages. However, the current design codes for Steel Reinforced Concrete (SRC) columns are in general only applicable to normal strength materials. It is only allowed in Eurocode 4 (EC4) for concrete class C20/25-C50/60 and steel grades S235-S460 to be used in composite columns. On the other hand, it is permissible in Eurocode 2 (EC2) for higher strength concrete (up to C90/105) while Eurocode 3 (EC3) steel grade up to

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An efficient geometrically exact beam element for composite columns and its application to concrete encased steel I-sections

Cited by 13 publications

References 20 publications

Reduction of the Carbon Footprint of Precast Columns by Combining Normal and Light Aggregate Concrete

Reduction of the Carbon Footprint of Precast Columns by Combining Normal and Light Aggregate Concrete

The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

Behaviour of steel reinforced concrete columns with high strength materials

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