Strength of multi-span composite beams subjected to combined flexure and torsion

Ban, Huiyong; Tan, Ee Loon; Uy, Brian

doi:10.1016/j.jcsr.2015.05.023

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…Thivya et al (2016) carried out an experimental study to investigate a newly developed composite beam called Confined Steel Concrete Composite Beam (CSCC beam) subjected to combined bending and torsion. Ban et al (2016) investigated the strength of multi-span composite beams subjected to combined flexure and torsion, in which eight reduced scale beams under combined flexure and torsion to varying degrees are tested. Oukaili and Abdullah (2017) investigated the structural behavior of nine composite concrete-cellular steel beams under the combined effect of flexure and torsion.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on composite beams under combined negative bending and torsional moments

Lin¹

2020

Advances in Structural Engineering

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In this study, straight composite steel-concrete beams were tested to investigate their mechanical performance under combined negative bending and torsional moments. Two specimens were used in this study, and different ratios between the applied negative bending and torsional moments were induced. Load and deflection relationships, strain development on the steel main girder and shear connectors (stud), and the slip development on the steel-concrete interface were recorded in the test and reported in this paper. The results indicate that increase of torsional moment will result in the significant decrease of the load-carrying capacities (e.g. yield load and ultimate load) of the specimens. It was also found that the normal strains of stud shear connectors in such beams are very large and non-negligible compared to their shear strains. In addition, the maximum interface slip was found occurring at around the 1/4 span, and the support conditions and serious crack of the concrete were considered to be the main causes. The research results obtained in this study can provide references for the design and analysis of steel-concrete composite beams subjected to the combined negative bending and torsional moments.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on composite beams under combined negative bending and torsional moments

Lin¹

2020

Advances in Structural Engineering

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“…Currently, there is a significant amount of literature about the mechanical behavior of SRC components under axial load, bending moments, or the combination of these two things, including experimental studies, theoretical analysis, finite element analysis, and design methods . However, in practice, a combined bending and torsional effect is often observed in structures due to the action of spatially complex earthquake ground motion or the deviation of the mass center and stiffness center in the actual structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on steel reinforced concrete columns subjected to combined bending–torsion cyclic loading

Chen

Peng

Yan

2018

Structural Design Tall Build

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An experimental investigation and analysis of the mechanical behavior of steel reinforced concrete (SRC) columns under combined bending-torsion cyclic loads is presented in this paper.Seven SRC columns with the same cross-sectional construction were tested under various torsion moment to bending moment ratios and axial load levels. The effect of the torsion to bending moment ratio on the failure characteristics, hysteretic behavior, bearing capacity, and deformation characteristics of the SRC columns was studied. Results indicate that both bending and torsion bearing capacity are reduced under combined bending and torsion loads and that the torsion-bending ratio is the key parameter that determines the failure mode of the SRC columns. Based on the tests results, an equation expressing the interaction curve between the bending and torsion is proposed. KEYWORDScombined loading, failure mode, seismic performance, steel reinforced concrete (SRC) columns, torsion, torsion to bending moment ratio 1 | INTRODUCTION Steel reinforced concrete (SRC) structures have been widely applied in modern buildings due to some favorable advantages compared with conventional reinforced concrete structures, including higher carrying capacities, better ductility performance, and higher damping ratios. [1] Currently, there is a significant amount of literature about the mechanical behavior of SRC components under axial load, bending moments, or the combination of these two things, including experimental studies, [2][3][4][5] theoretical analysis, [6][7][8] finite element analysis, and design methods. [9,10] However, in practice, a combined bending and torsional effect [11][12][13] is often observed in structures due to the action of spatially complex earthquake ground motion or the deviation of the mass center and stiffness center in the actual structure.The behavior of structures under bending and torsion interaction has received considerable attention in recent years. The tests of members under the combined forces of bending and torsion have been carried out by many researchers, including Tirasit, [14] Prakash, [15] Suriya, [16] Nie, [17] and Wang. [18] Tirasit [14] reported that the flexural capacity of reinforced concrete (RC) columns decreases as the rotation-to-drift ratio increases and that the damage tends to occur above the flexural plastic hinge region. The tests results of Nie [17] also show that the effects of combined loading reduce the flexural and torsional capacities of concrete-filled steel tube columns. Hsu [19] studied the flexural-torsional behavior of the SRC members under torsional and cyclic bending loads and found that the ultimate flexural capacity of the SRC members was significantly reduced under a moderate degree of torsion; therefore, he proposed a simplified interaction curve between bending and torsion. The literature noted here about the torsion behavior of SRC columns has mainly focused on the static behavior of SRC columns subjected to torsion, and the cyclic torsion effect has not generally been consider...

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Experimental investigation on the flexural behavior of steel-concrete composite beams with U-shaped steel girders and angle connectors

Liu

Guo

et al. 2017

Engineering Structures

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Strength of multi-span composite beams subjected to combined flexure and torsion

Cited by 7 publications

References 11 publications

Experimental investigation on composite beams under combined negative bending and torsional moments

Experimental investigation on composite beams under combined negative bending and torsional moments

Experimental study on steel reinforced concrete columns subjected to combined bending–torsion cyclic loading

Experimental investigation on the flexural behavior of steel-concrete composite beams with U-shaped steel girders and angle connectors

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