Experimental and numerical study of PRC coupling beams with low span-to-depth ratio

Tian, Jianbo; Shi, Qingxuan; Shen, Li; Tao, Yi; Guo, Hongchao

doi:10.1016/j.jcsr.2019.03.033

Cited by 11 publications

(8 citation statements)

References 13 publications

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“…Specimens with plate thicknesses of 1.5 mm, 2.0 mm, and 2.5 mm were plotted graphically in blue, orange, and grey, respectively, in Figure 6. Of the nine specimens from the HP series with perforated TMS plates as shear reinforcement, the specimens with a perforated plate thickness of 2.0 mm attained the largest displacement before failure when compared with specimens of other plate thicknesses, as observed in Figure 6b-d [22].…”

Section: Effect Of Tms Plate Thicknessmentioning

confidence: 83%

Experimental and Numerical Study of the Strength Performance of Deep Beams with Perforated Thin Mild Steel Plates as Shear Reinforcement

et al. 2023

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This study aims to investigate a new shear reinforcement method which utilizes thin mild steel (TMS) plates as shear reinforcement in deep beams to replace conventional reinforcement. Thirteen reinforced concrete deep beam specimens with three different plate thicknesses and four varying perforated hole arrangements on the TMS plates were experimentally tested to determine the load-carrying capacity and crack pattern. The experimental results indicate that the 2.0 mm thick TMS plate has the highest load-carrying capacity. Among the four different hole arrangements on the TMS plates, the perforated plates with a three-column hole arrangement show the best performance in terms of load-carrying capacity, with a 2.9% increment against the control beam specimen. The specimens also demonstrated compatible elastic stiffness with the control beam that used conventional shear links. This shows that TMS plates have the potential to replace conventional shear links in deep beams. This proposed method also changed the failure mode from conventional diagonal shear tension failure to a combination of flexural failure and shear deformation. A numerical model was developed and was found to have a good correlation with the experimental results, demonstrating potential for use in future parametric investigations on deep beams and cost reduction in future experimental work.

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Section: Effect Of Tms Plate Thicknessmentioning

confidence: 83%

Experimental and Numerical Study of the Strength Performance of Deep Beams with Perforated Thin Mild Steel Plates as Shear Reinforcement

et al. 2023

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“…Assuming that the point of contraflexure of the coupling beam is located at the mid-span, the end moments of the beam can be calculated from the shear force. Reference [34] mentions that for steel plate-fiber reinforced concrete coupling beams, the height of the embedded steel plate in the beam should be at least 70% of the beam's section height, and the thickness of the steel plate should be at least 6 mm. When calculating the shear carrying capacity, only the minimum required number of transverse reinforcements needs to be considered based on the structural configuration.…”

Section: Coupling Beam Section Dimensions Controlmentioning

confidence: 99%

“…The size of the embedded steel plate in the coupling beam should satisfy the shear bearing capacity requirements. The thickness of the embedded steel plate, tw1, can be determined using the simplified softened tension-compression bar model calculation formula for the shear bearing capacity of small and medium span-to-height ratio coupling beams, as presented in literature [34].…”

Section: Coupling Beam Section Dimensions Controlmentioning

confidence: 99%

“…However, past experiences have demonstrated that these reinforced concrete (RC) coupling beams are prone to brittle shear failure during seismic events, impeding the desired yielding mechanism where the coupling beam yields first, followed by the wall limbs. To enhance the seismic performance of the coupling beam, researchers have proposed replacing the traditional RC coupling beams with steel plate-fiber reinforced concrete composite coupling beams [1][2][3][4][5]. This type of coupling beam offers higher shear carrying capacity and energy dissipation capacity, as well as ease of construction and convenience.…”

Section: Introductionmentioning

confidence: 99%

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Seismic performance analysis and control method of composite coupled shear wall with steel plate-fiber reinforced concrete coupling beams

Xia,

Shen,

Xia

et al. 2024

Mater. Res. Express

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This paper based on the study of steel plate-fiber reinforced concrete coupling beam components, designs a basic model of composite coupled shear walls with steel plate-fiber reinforced concrete coupling beams. The seismic performance of this model was numerically simulated using the ABAQUS finite element software, analyzing the stress distribution of various parts and the development pattern of plastic hinges in the structure. It also examines how factors such as axial compression ratio, coupling beam cross-sectional dimensions, single-sided wall limb aspect ratio, and total floor height affect the seismic performance of this type of coupled shear wall, providing a reasonable range for axial compression ratios and coupling ratios for composite coupled shear walls with steel plate-fiber reinforced concrete coupling beams. Based on the obtained reasonable axial compression ratio and coupling ratio, and using the analytical solution of the continuum method, a method for controlling the seismic performance of coupled shear wall structures was proposed. Results show that the composite coupled shear walls with steel plate-fiber reinforced concrete coupling beams exhibit high load-bearing capacity and lateral stiffness under inverted triangular horizontal loads, with good displacement ductility and strong energy dissipation capability, making it an excellent seismic performance coupled shear wall system. As the axial compression ratio increases, the displacement corresponding to the yield point and peak point of the structure gradually decreases, and the displacement ductility coefficient shows a trend of first increasing and then decreasing; it is recommended that when designing steel plate-fiber reinforced concrete coupling beam-coupled shear walls, the axial compression ratio should not exceed 0.3. Numerical analysis of coupling ratio-related parameters indicates that in high-intensity seismic design areas, the range of coupling ratios should be between 45% and 60%.

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“…However, the floor slab and the coupling beam are poured together as a whole in real engineering applications, and the steel bar and concrete of the floor slab participate in the force on one side of the coupling beam and plastic deformation occurs [15]. Most of the previous experimental studies do not consider this effect of the floor slab, which makes it different from the stress mechanism of the coupling beam in actual engineering, and the calculation results have certain errors [16,17].…”

Section: Introductionmentioning

confidence: 99%

Cyclic behavior and numerical study of PRC coupling beam with steel truss floor slab

Nie,

Zhang,

Liu

et al. 2023

Mater. Res. Express

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The coupling beam with small span-to-depth ratio is prone to brittle shear failure under the action of earthquake, so it can not play its role as the first line of defense against earthquake. Therefore, this paper proposes a method for calculating the shear bearing capacity of PRC-connected beams with reinforced truss floor plates. A more rational calculation model should be adopted based on its mechanical mechanism. In this study, ABAQUS finite element software is utilized to explore the parameters of PRC-connected beams with steel truss plates, including the span-to-height ratio, reinforcement ratio of the internal steel plate, diameter of upper and lower chord bars, and diameter of abdominal bars. The analysis shows that the span-to-height ratio, steel plate ratio and concrete compressive strength have a significant effect on the seismic behavior of PRC coupling beams with steel truss floor slab. Based on the softened tension-compression bar model combined with the multi-strip model, the theoretical calculation method of the shear capacity of PRC connected beams with steel truss bearing plates is derived. The results of comparison test and simulation verify the accuracy of the calculation results, and provide a design basis for the engineering application of PRC connected beams with steel truss floor plates.

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Experimental and numerical study of PRC coupling beams with low span-to-depth ratio

Cited by 11 publications

References 13 publications

Experimental and Numerical Study of the Strength Performance of Deep Beams with Perforated Thin Mild Steel Plates as Shear Reinforcement

Experimental and Numerical Study of the Strength Performance of Deep Beams with Perforated Thin Mild Steel Plates as Shear Reinforcement

Seismic performance analysis and control method of composite coupled shear wall with steel plate-fiber reinforced concrete coupling beams

Cyclic behavior and numerical study of PRC coupling beam with steel truss floor slab

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