Cyclic Testing of a Composite Joint between a Reinforced Concrete Column and a Steel Beam

Le, Dang Dung; Nguyen, Xuan Huy; Nguyen, Quang-Huy

doi:10.3390/app10072385

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…The variations in the exural stiffness of the column were studied with the help of secant stiffness. This stiffness was calculated by the slope of a line connecting the origin and the peak point of the hysteresis loops formed by all three cycles of excursions at a given applied drift ratio [42,43]. Figure 7 compares the changes in the secant stiffness of the specimens at different drift ratios for both the positive and negative directions of loading.…”

Section: Flexural Stiffnessmentioning

confidence: 99%

Study of Effects of Lateral Confinement on Concrete Columns Reinforced With Tmt Bars

Khan,

Rafi,

Varum

2023

Preprint

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The details of experimental testing of full-scale reinforced concrete (RC) columns are presented in this paper. These columns were reinforced with hot-rolled thermo-mechanically treated (TMT) bars with yield strength higher than recommended in the prevalent manufacturing standards. The parameters of the study were the concrete confinement and concrete core area which were investigated using three specimen columns having lap-spliced longitudinal bars at the base. Although the initial cracks in all the columns were similar, the severely damaged region shifted in the vicinity of the end of dowel bars in the column with lesser confinement due to rebar slip. This type of behaviour influenced flexural rigidity and curvature distribution for this specimen. The maximum lateral load capacity and ductility of the specimen with lesser confinement were also the lowest. On the contrary, the specimen with higher confinement and core concrete area exhibited the highest stiffness and load capacity.

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Section: Flexural Stiffnessmentioning

confidence: 99%

Study of Effects of Lateral Confinement on Concrete Columns Reinforced With Tmt Bars

Khan,

Rafi,

Varum

2023

Preprint

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“…Numerous studies have focused on the performance of RCS structures. Le et al [30] carried out tests on concrete column-steel beam combination edge joints with built-in I-beams made of short steel. Zhang et al [31] conducted tests on steel-concrete combination beam-reinforced concrete column joints under monotonic loading.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Seismic Behavior of Demountable Joints Consisting of Reinforced Concrete Columns and Steel Beams

Cai,

Deng,

2023

Buildings

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In this study, three new types of demountable connections, consisting of reinforced concrete columns and steel beams, are proposed, and their seismic performance is investigated through the use of cyclic loading tests. The test results reveal that these three demountable RCS joints show good seismic performance, in which the ductility coefficients of specimens RCS-1 and RCS-2 are improved by 69% and 109%, respectively, compared with the reference group of RCS-0 specimens. Various parameters, such as the beam flange thickness, bolt strength, and connecting steel strength, were analyzed using the finite element software ABAQUS 2021 to determine the effect of these parameters on the seismic performance and behavior of the connections. The results also show that the three demountable RCS joints are very sensitive to the variation in beam flange steel thickness, while the connector steel strength and bolt type have very little effect on the joint load-carrying capacity. In addition, different current theoretical approaches for calculating the shear bearing capacity in the panel zone of joints are discussed.

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“…Nabati et al [11] determined the impacts of the form and thickness of web stiffeners on the seismic behavior of RCS joints experimentally and proved that the correct utilization of web stiffeners could enhance the strength, stiffness, and resilience of the joint. Both web stiffeners and flange stiffeners were extensively studied by Le et al [12] from the aspects of capacity, story drift, and energy dissipation, demonstrating that they have a positive effect on the seismic performance of RCS joints. Herdiansah et al [13] utilized bearing plates, band plates, and U-shape stirrups to improve the resistance of the RCS joints.…”

Section: Introductionmentioning

confidence: 99%

Study of the Seismic Behavior of Simplified RCS Joints via Nonlinear Finite Element Analysis

Li,

Wang,

Lin

et al. 2023

Buildings

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Compared to more complex structures, simply configured reinforced concrete column–steel beam (RCS) composite structures have more promising application prospects, especially in regions with moderate–high seismic levels, due to their ease of construction. However, the current understanding of the seismic performance of simplified RCS joints is not sufficient. Validated by experimental results, a nonlinear finite element analysis (FEA) model was developed in this study to reveal the seismic behavior of simplified RCS joints. Six vital design parameters, namely axial load ratio, concrete strength, yield strengths of steel webs and flanges, and diameters of transverse and longitudinal reinforcements, were comprehensively studied. Research has shown that the axial compression ratio has a significant impact on the failure mode and bearing capacity of joints. When the concrete strength increases, the load-bearing capacity of the joints significantly increases, while the brittleness of high-strength concrete leads to a decrease in its deformation capacity. In addition, when the steel beam strength is constant, higher flange and web yield strengths have a limited influence on crack propagation and strain development. The stirrup reinforcement ratio and longitudinal reinforcement ratio play a significant role in inhibiting crack propagation and improving the bearing capacity, respectively. With the help of the numerical results, six theoretical models introduced by national codes and other researchers were compared. Among them, the modified model proposed by Kanno demonstrated the highest accuracy and was the most suitable for simply configured RCS joints.

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Cyclic Testing of a Composite Joint between a Reinforced Concrete Column and a Steel Beam

Cited by 9 publications

References 15 publications

Study of Effects of Lateral Confinement on Concrete Columns Reinforced With Tmt Bars

Study of Effects of Lateral Confinement on Concrete Columns Reinforced With Tmt Bars

Numerical Study on Seismic Behavior of Demountable Joints Consisting of Reinforced Concrete Columns and Steel Beams

Study of the Seismic Behavior of Simplified RCS Joints via Nonlinear Finite Element Analysis

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