Effect of an Opening on Reinforced Concrete Hollow Beam Web Under Torsional, Flexural, and Cyclic Loadings

Jabbar, Sarah; Hejazi, Farzad; Mahmod, H. Mahir

doi:10.1590/1679-782512629

Cited by 39 publications

(9 citation statements)

References 12 publications

(19 reference statements)

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“…However, the reported decrement in the ultimate load capacity and the calculated concrete reduction by volume are listed in Table 4. The load mid span deflection response is shown in Figure (7). Varghese and Joy (2015) [6] deduced that the optimum depth of hollow core is 160 mm from extreme fiber of compression which is just below the neutral axis.…”

Section: Scientific Research Data For Hrcbmentioning

confidence: 99%

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Structural Behavior of Hollow Reinforced Concrete Beams: A Review

Abdulhusain

Ismael

2020

DJES

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This paper reviews some experimental and numerical results about the hollow reinforced concrete beams (HRCB). Any subtraction in concrete quantity within the structural members without a considerable lack in load carrying capacity represents a common research trend nowadays due to the decrease in sections dimensions, reinforcing steel and lateral inertia forces in severe earthquakes as well as the sustainability gain for the resulting inhibiting of CO2 emission. In addition, the possibility of passing the electrical and mechanical facilities comprises another good feature of such type of structural members. During the traditional beam design process, the tension concrete is considered as strain transfer agent and do not have any role for structural resistance. As a result, longitudinal holes can be made within this area to produce the hollow reinforced concrete beams (HRCB). In this paper some remarkable research works are summarized with the most important conclusions within this field.

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Section: Scientific Research Data For Hrcbmentioning

confidence: 99%

“…The reported ultimate load capacity is listed in Table 5. Jabbar, et al, (2016) [7] inspected the effect of transvers opennings presence to the structural response of HRCBs numerically. ABAQUS software was used to implement a threedimensional finite element analysis.…”

Section: Scientific Research Data For Hrcbmentioning

confidence: 99%

Structural Behavior of Hollow Reinforced Concrete Beams: A Review

Abdulhusain

Ismael

2020

DJES

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“…Further, for aesthetic, economic, and functional purposes including leaving spaces for mechanical and electrical supply lines, computer networks, water and sewage pipelines, and reducing member weight to save materials, the openings in RC beams and slabs have become popular in the construction of buildings, bridges, offshore structures, and towers [9][10][11][12]. Many studies have considered various configurations of web openings in RC beams [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. However, other studies have investigated structural behaviours of RC beams with longitudinal openings [8][9][10][11][26][27][28][29][30][31][32][33][34][35][36][37][38][39], and these studies are related to the current study and can be divided into two big groups, i.e., experimental and numerical studies in a chronological order.…”

Section: Introductionmentioning

confidence: 99%

Structural Efficiency of Hollow Reinforced Concrete Beams Subjected to Partial Uniformly Distributed Loading

et al. 2021

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Reinforced concrete (RC) beams containing a longitudinal cavity have become an innovative development and advantage for economic purposes of light-weight members without largely affecting their resistance against the applied loads. This type of openings can also be used for maintenance purposes and usage space of communication lines, pipelines, etc. RC beams are primarily loaded in the plane of the members, which are two-dimensional in a plane stress state and the dominant structural behaviours include bending, shear, or combination of both. In the present study, six numerical models of RC beams with and without openings were simulated by using commercial finite element software ANSYS to evaluate the structural behaviours of those beam models under the partial uniformly distributed load. Different parameters were assessed, including opening dimensions and shear reinforcement ratios. The obtained numerical results were analysed and verified and were found very close to those obtained from the experimental investigations in the literature. The increase of shear reinforcement ratio could enhance the flexural and shear capacities of the RC beams, and the results also showed that some models sustained flexural failure while the others sustained failure of combined bending and shear.

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“…In comparison with shear and flexural impacts, torsion is typically taken into consideration as a secondary effect. As a result, the available literature consists of limited research into the torsional behaviour of RC structural members [4]. Note that in cases like curved girders in bridges, spandrels, and curved beams in buildings, the torsional effects play an important role.…”

Section: Introductionmentioning

confidence: 99%

Torsional Strengthening of Reinforced Concrete Beams with Externally-Bonded Fibre Reinforced Polymer: An Energy Absorption Evaluation

et al. 2020

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The impacts of numerous important factors on the Energy Absorption (EA) of torsional Reinforced Concrete (RC) beams strengthened with external FRP is the main purpose and innovation of the current research. A total of 81 datasets were collected from previous studies, focused on the investigation of EA behaviour. The impact of nine different parameters on the Torsional EA of RC-beams was examined and evaluated, namely the concrete compressive strength (f’c), steel yield strength (fy), FRP thickness (tFRP), width-to-depth of the beam section (b/h), horizontal (ρh) and vertical (ρv) steel ratio, angle of twist (θu), ultimate torque (Tu), and FRP ultimate strength (fy-FRP). For the evaluation of the energy absorption capacity at different levels, Response Surface Methodology (RSM) was implemented in this study. Also, to fit the measured results, Quadratic and Line models were created. The results show that the RSM technique is a highly significant tool that can be applied not only to energy absorption-related problems examined in this research, but also to other engineering problems. An agreement is observed between Pareto and standardized charts with the literature showing that the EA capacity of the torsional FRP-RC beams is mostly affected by the concrete compressive strength, followed by the vertical reinforcement ratio. The newly suggested model in this article exhibits a satisfactory correlation co-efficient (R), of about 80%, with an adequate level of accuracy. The obtained results also reveal that the EA acts as a safety index for the FRP-strengthened RC beams exposed to torsional loadings to avoid sudden structural damage. Doi: 10.28991/cej-2020-SP(EMCE)-07 Full Text: PDF

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Effect of an Opening on Reinforced Concrete Hollow Beam Web Under Torsional, Flexural, and Cyclic Loadings

Cited by 39 publications

References 12 publications

Structural Behavior of Hollow Reinforced Concrete Beams: A Review

Structural Behavior of Hollow Reinforced Concrete Beams: A Review

Structural Efficiency of Hollow Reinforced Concrete Beams Subjected to Partial Uniformly Distributed Loading

Torsional Strengthening of Reinforced Concrete Beams with Externally-Bonded Fibre Reinforced Polymer: An Energy Absorption Evaluation

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