Numerical Investigation of Reinforced Concrete and Steel Fiber-Reinforced Concrete Exterior Beam-Column Joints under Cyclic Loading

Yimer, Musitefa Adem; Aure, Temesgen Wondimu

doi:10.1007/s40996-021-00745-1

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…The shell element shell181, the solid element solid185, and the link element link8 are, respectively, adopted for simulating the steel structure, the concrete, and the prestressed reinforcement in the finite element model; the steel plate is mainly divided into rectangular grids, while the solid concrete is divided into hexahedral grids to ensure the calculation accuracy. The initial strain theory is employed for applying the prestress [18][19][20], and initial strain is set up for link8. In this paper, due to the complex model and large size, the entire structure is divided into 785 one-dimensional elements, 5,13,437 two-dimensional elements, and 1,191,776 three-dimensional solid elements.…”

Section: Element Selectionmentioning

confidence: 99%

Stress Analysis and Structural Optimization of Steel–Concrete Joint of Zhonghua Road Bridge in Liaocheng

Jin

Zhang

et al. 2023

Advances in Civil Engineering

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Based on Zhonghua Road Bridge in Liaocheng city, a single tower hybrid cable-stayed bridge, the stress of the steelconcrete joint of the girder is studied using the finite element method with the software MIDAS and ANSYS. The beam element model of the whole bridge is established in MIDAS CIVIL, from which the internal forces of the critical sections of the steel–concrete joint under six adverse conditions are obtained. Then, the results are applied in the refined solid-shell finite element model established in ANSYS. With the stress analysis, it is found that when the steel–concrete joint is used in the girder of the single tower cable-stayed bridge, both the compressive strength of concrete and the tensile strength of steel can be fully used, and the structural stiffness can be smoothly transferred through the two different materials in the joint, which makes the structural behavior more reasonable. The detailed stress analysis also shows that it is prone to generate considerable stress concentration at the corners and the connection between the steel lattice chamber and the pressure bearing plate, and the concentration can be avoided by local stiffening and smoothing of the chamfers. The sensitivity analysis of the web thickness in the joints and bearing plates showed that increasing the thickness of the intermediate web would lead to a moderate reduction in the stress of the web itself, while the stress in the steel member remained relatively constant. However, when the thickness of the bearing plate is increased from 60 to 80 mm, the stress of each part of the steel plate in the steel grid will be significantly reduced, and the maximum reduction can reach 48%. The improvement of concrete strength has little effect on the stress of the steel cell, and the C50 concrete strength grade used in the design is more reasonable.

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Section: Element Selectionmentioning

confidence: 99%

Stress Analysis and Structural Optimization of Steel–Concrete Joint of Zhonghua Road Bridge in Liaocheng

Jin

Zhang

et al. 2023

Advances in Civil Engineering

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“…References [1,2] Deep beams, pile tops, dapped terminating beams, and corbels are examples of nonlinear and nonprismatic members that are not covered by the conventional beam theory based on Bernoulli's theorem. Because shear failure is more common than fexural failure, these structures cannot be analyzed or built using fexural analysis of beam theory.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of a Reinforced Concrete Dapped-End Beam under the Effects of Impact Velocity and Dapped-End Beam Cross-Section Geometry

Melesse

Behailu

Kassa

2023

Advances in Materials Science and Engineering

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This study focuses on the behavior of a three-dimensional reinforced concrete dapped-end beam subjected to the effects of impact velocity and dapped-end beam cross-section geometry by numerical simulation using ABAQUS (V6.14) software under a constant impact load. The finite element software ABAQUS is utilized to simulate and analyze the drop impact to obtain accurate and detailed results. A sudden drop impact is a short-duration dynamic load that could involve very large deformations and damage to the reinforced concrete dapped-end beam. The finite element analysis has been completed by creating the geometry, material properties, boundary conditions, and loading conditions. In this study, a total of seven analyzes were conducted with different parameters, i.e., the effect of the velocity of the impact load and the geometry of the dapped-end beam cross-section. From the finite element analysis results, it can be concluded that as the impact velocity increases, the impact force and mid-span displacement of the reinforced concrete dapped-end beam also increases. The higher the impact velocity, the greater the amount of damage caused throughout the RC beam. When the recess length increases from 200 mm to 500 mm, the deflection increases by 13%. The depth of the nib has a great influence on the impact response and deflection of the reinforced concrete dapped end beam. The ABAQUS output shows that increasing the dapped end beam nib depth from 260 mm to 450 mm reduces the impact load by 50%, from 22733.6 N to 13640.16 N. On the other hand, the nib depth increased from 260 mm to 450 mm, and the maximum deflection was reduced from 1.10245 mm to 0.6892 mm, i.e., a 46.1% reduction.

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“…Because of the high computational cost of nonlinear analysis of RC structures, especially for fine mesh sizes between 25 mm and 12.5 mm [32][33][34], many researchers [35][36][37][38][39][40] successfully obtain the detailed behaviors of different structural elements tested under cyclic loading (i.e., load-displacement backbone curves, cracking patterns, yielding in reinforcement bars) by adopting monotonic loads through the CDP model. On the other side, several researchers [41][42][43][44][45][46] failed to obtain the cyclic characteristics of different structural responses for elements modeled via CDP even at a 30 mm mesh element size [47]. As a result, monotonic loading is typically preferred over cyclic loading when using the CDP model due to the absence of shear retention, which can lead to improper capture of the pinching behavior during load cycles in shear-dominated scenarios [48].…”

Section: Introductionmentioning

confidence: 99%

Effect of Geometric Parameters on the Behavior of Eccentric RC Beam–Column Joints

Abdel-Latif,

Nassr,

Sumelka

et al. 2023

Buildings

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Over the last century, the seismic behavior of reinforced concrete (RC) beam–column joints has drawn many researchers’ attention due to their complex stress state. Such joints should possess sufficient capacity and ductility to ensure integrity and safety when subjected to cyclic loading during seismic events. In the literature, while most studies have focused on the behavior of concentric beam–column joints, few studies investigated the response of eccentric beam–column joints, in which the beam’s centerline is offset from the centerline of the column. Recent earthquakes demonstrated severe damage in eccentric beam–column joints due to their brittle torsional behavior, which may threaten the ductility required for the overall structural performance. To investigate the effect of brittle failure on the strength, ductility, and stability of eccentric beam–column joints, nonlinear finite element (FE) models were developed and validated. The FE model was employed to study the effect of some geometric parameters on the global and local behaviors of beam–column joints, including the joint type (exterior and interior), the column aspect ratio, and the joint aspect ratio. The results show that the joint aspect ratio, which is the ratio of beam-to-column depth, has a predominant effect on the failure behavior of the joint. Additionally, the increase in column aspect ratio alters the failure mode from brittle joint shear failure to ductile beam-hinge, although there is an increase in the joint torsional moment. The current study also showed that interior joints exhibited a higher out-of-plane moment as well as more extensive column torsion cracks compared to exterior joints.

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Numerical Investigation of Reinforced Concrete and Steel Fiber-Reinforced Concrete Exterior Beam-Column Joints under Cyclic Loading

Cited by 6 publications

References 41 publications

Stress Analysis and Structural Optimization of Steel–Concrete Joint of Zhonghua Road Bridge in Liaocheng

Stress Analysis and Structural Optimization of Steel–Concrete Joint of Zhonghua Road Bridge in Liaocheng

Finite Element Analysis of a Reinforced Concrete Dapped-End Beam under the Effects of Impact Velocity and Dapped-End Beam Cross-Section Geometry

Effect of Geometric Parameters on the Behavior of Eccentric RC Beam–Column Joints

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