Effect of Support Conditions on Performance of Continuous Reinforced Concrete Deep Beams

Mansour, M. H.; El-Ariss, Bilal; El‐Maaddawy, Tamer

doi:10.3390/buildings10110212

Cited by 8 publications

(9 citation statements)

References 30 publications

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Section: Finite-element Modeling Of the Test Beamsmentioning

confidence: 99%

“…The software has a practical interface that makes the pre-processing step easy. The authors have utilized ATENA 3D in earlier works, see Mansour et al [30] and El-Ariss and Elkholy [31], due to its high simulation capability. Moreover, the accuracy of numerical outcomes in this study confirmed the validity of this software.…”

Section: Finite-element Modeling Of the Test Beamsmentioning

confidence: 99%

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Effects of Web Height Reduction and Skew Angle Variation on Behavior of RC Inverted T-Beams

2021

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The use of precast inverted T-beams has been frequently used to minimize construction activities and installation time. However, shipping and placement of large invert T-beams can become challenging tasks due to their weight. Decreasing the web height of the beam can be effective in reducing the beam weight. This paper considers inverted T-beams with two overhangs, negative moment regions, and one span, a positive moment region. The examined parameters were the web height and skew angle of the inverted T-beams. To avoid high costs of testing beams and to save time, the application of numerical modeling is, hence, inevitable. A calibrated 3D nonlinear numerical model, using ATENA software, was further used to numerically investigate the effects of reducing the weight, by decreasing the web height and varying the skew angle of inverted T-beams on their structural performance. The outcomes of this study indicated that reducing the web height of the beam was an effective tool to reduce the weight without jeopardizing the strength of the beams. Increasing the skew angle of the inverted T-beam also decreased their ductility.

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Section: Finite-element Modeling Of the Test Beamsmentioning

confidence: 99%

Section: Finite-element Modeling Of the Test Beamsmentioning

confidence: 99%

Effects of Web Height Reduction and Skew Angle Variation on Behavior of RC Inverted T-Beams

2021

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“…The boundary condition is an important factor to determine the stiffness as well as the ultimate strength of RC deep beams [29]. Thus, the boundary conditions of the RDBs can be simplified as a deep beam with fixed supports [8], and the idealized diagram is presented in Figure 9a.…”

Section: Elastic Stiffnessmentioning

confidence: 99%

Cyclic Tests and Numerical Analyses on Bolt-Connected Precast Reinforced Concrete Deep Beams

Jiang

Zheng

et al. 2021

Applied Sciences

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A bolt-connected precast reinforced concrete deep beam (RDB) is proposed as a lateral resisting component that can be used in frame structures to resist seismic loads. RDB can be installed in the steel frame by connecting to the frame beam with only high-strength bolts, which is different from the commonly used cast-in-place RC walls. Two 1/3 scaled specimens with different height-to-length ratios were tested to obtain their seismic performance. The finite element method is used to model the seismic behavior of the test specimens, and parametric analyses are conducted to study the effect on the height-to-length ratio, the strength of the concrete and the height-to-thickness ratio of RDBs. The experimental and numerical results show that the RDB with a low height-to-length ratio exhibited a shear–bending failure mode, while the RDB with a high height-to-length ratio failed with a shear-dominated failure mode. By comparing the RDB with a height-to-length ratio of 2.0, the ultimate capacity, initial stiffness and ductility of the RDB with a height-to-length ratio of 0.75 increased by 277%, 429% and 141%, respectively. It was found that the seismic performance of frame structures could be effectively adjusted by changing the height-to-length ratio and length-to-thickness of the RDB. The RDB is a desirable lateral-resisting component for existing and new frame buildings.

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“…Reinforced concrete corbels are widely used in the construction of industrial buildings as the convenient hinged supporting member. Corbels are mainly subjected to shear loads, resulting in complex stress distribution [1][2][3]. Since the plane-section assumption is no longer satisfied, corbels are commonly classified as the disturbed region's member, where the strain distribution is significantly nonlinear [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…where, fy is the yield strength of the longitudinal bars; As is the area of the longitudinal bars; h0 is the effective depth of the corbel section; av is the shear span value, which cannot exceed the effective depth value of the corbel section (h0) [7]. Meanwhile, to control the crack width under the serviceability limit state, the code GB 50010-2010 stipulates the following provision for corbel cross-sectional dimensions, expressed by 𝐹 ≤ 0.65 𝑓 𝑏ℎ 0.5 + 𝑎 /ℎ (2) where, Fvk is the load corresponding to the serviceability limit state, taken as 0.67Fv [7]; ftk is the standard tensile strength of concrete; b is the thickness of the corbel. Previous studies on corbels have mainly focused on the effect of certain factors.…”

Section: Introductionmentioning

confidence: 99%

Reinforced Concrete Corbels Shear Test: The Triangular-Truss Method Evaluation

Huang

Han²,

Yin³

2022

Buildings

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In this paper, five reinforced concrete double-corbel specimens with the same designed bearing capacity are produced according to the triangular-truss method (TTM) in GB 50010-2010. Corbels with different dimensions and reinforcement configurations are obtained by separately varying the concrete compressive strength and shear span. The differences in the mechanical performance and load-bearing capacity of the corbels are compared to evaluate the accuracy and rationality of the TTM under specific variables. Then, the accuracy in predicting the load-bearing capacity of GB 50010-2010, ACI 318-19, EC 2, CSA A23.3-04, the softened strut-and-tie method, and the Russo strut-and-tie method is compared. The results show that the safety factor (ratio of the actual bearing capacity to the designed bearing capacity) of the TTM is increased from 1.419 to 1.718 when the concrete strength is improved from 20.8 MPa to 65.3 MPa; the safety factor of the TTM is increased from 1.414 to 1.859 when the shear span–depth ratio is increased from 0.25 to 0.67. Compared to GB 50010-2010, ACI 318-19, and EC 2, the predictions of CSA A23.3-04 for corbels are closer to the test values. The safety level of codes GB 50010-2010, ACI 318-19, and EC 2 is essentially the same; both the SSTM and the Russo STM are accurate in the predictions.

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Effect of Support Conditions on Performance of Continuous Reinforced Concrete Deep Beams

Cited by 8 publications

References 30 publications

Effects of Web Height Reduction and Skew Angle Variation on Behavior of RC Inverted T-Beams

Effects of Web Height Reduction and Skew Angle Variation on Behavior of RC Inverted T-Beams

Cyclic Tests and Numerical Analyses on Bolt-Connected Precast Reinforced Concrete Deep Beams

Reinforced Concrete Corbels Shear Test: The Triangular-Truss Method Evaluation

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