Structural Materials. Flexural and Shear Behavior of Reinforced Concrete Beams Damaged by Alkali-Silica Reaction under Reversed Cyclic Loads.

Inoue, Shozo; Mikata, Yasuhiro; Kobayashi, Kazuo; Nieda, Tamotsu

doi:10.2472/jsms.50.883

Cited by 5 publications

(7 citation statements)

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“…(7) predict that the tensile forces on stirrups will significantly increase after the occurrence of diagonal shear crack in the shear span zone represented by V c . This tendency has been documented in another experimental study as reported in [6]. Also Fig.…”

Section: Test Results and Discussionsupporting

confidence: 82%

Analytical prediction of tension force on stirrups in concrete beams longitudinally reinforced with CFRP bars

Thamrin

2018

MATEC Web Conf.

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An analytical study to predict the tension force of stirrups in concrete beams that are longitudinally reinforced with Carbon Fibre Reinforced Polymers (CFRP) bars was carried out. Modified Compression Field Theory (MCFT) was applied in this study and a computer program was developed to facilitate the calculation process. The analytical results were compared with empirical formula and test data adopted from experimental study. Three concrete beams longitudinally reinforced with CFRP bars and transversely reinforced with steel bars were tested. Stirrups spacing was used as test variable. The beams were tested until failure and strains on the stirrups measured. The comparison between test results and the MCFT results shows that MCFT predicts the growth of tension force in stirrups well.

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Section: Test Results and Discussionsupporting

confidence: 82%

Analytical prediction of tension force on stirrups in concrete beams longitudinally reinforced with CFRP bars

Thamrin

2018

MATEC Web Conf.

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“…A hollow beam has a longitudinal void along its span caused by the removal of concrete using lightweight void formers such as Polyvinyl Chloride (PVC) pipes (Joy and Rajeev, 2014;Varghese and Joy, 2016;Ragavi, 2017;Dhinesh and Satheesh, 2017;Al-Gasham, 2015;Ngu, 2017;Parthiban and Neelamegam, 2017), Polystyrene foams (Manikandan et al, 2015), Polypropylene plastic sheets (Kumbhar and Jadhav, 2018) and plastic bottles (Mathew and Varghese, 2016;Sariman and Nurdin, 2018). These beams have been reported to generally offer a lower strength compared to the solid ones (Kumbhar and Jadhav, 2018;Al-Gasham, 2015;Alshimmeri and Al-Maliki, 2014;Alnuaimi et al, 2008;Inoue and Egawa, 1996). This was associated with the changes caused by the void in its cross-sectional configuration which reduces its second moment of inertia and affects its strength (Ngu, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Development of Finite Element Model to Investigate the Structural Performance of Reinforced Concrete Hollow Beams

Ling¹,

Chan²,

Leong³

et al. 2020

Journal of the Civil Engineering Forum

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The self-weight of a reinforced concrete beam contributes to the permanent loads of a structure. This can be reduced by creating a longitudinal void along the beam so that it will not affect the performance of the beam. In addition, this process can reduce the amount of building cost. Therefore, a finite element model was developed in this study with the aid of a computer program, Ansys, to investigate the behavior of the hollow beam. The model was tested for reliability by comparing the predicted results with those obtained from the experiment in terms of the load-displacement responses, mechanical properties, and parametric responses. The result showed that the reliability of the model was questionable. The main cause of the non-reliability was the inaccurate prediction of the beam deflection by the model. The poor prediction of beam deflection led to significant variations of relevant mechanical properties including stiffness, deflection, and ductility. For beam deflection, only 1/3 of the specimens were correctly predicted with a reliability of 36% while the strength properties were discovered to have higher values as observed in the yield and the ultimate strengths with 73% and 64% respectively. However, both the model and experimental results showed the hollow beam was relatively effective when the diameter of the longitudinal void was 1/3 times the beam width and placed at the neutral axis. For the evaluation to improve the reliability, some revision including the properties of the materials, boundary conditions of the beam support, bonding conditions between different materials, and meshing shape and size suppose to be applied to the model.

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“…However, it is possible that these hollow member does not have sufficient plastic deformation to absorb the applied energy. Therefore, in order to ensure the safety of these elements, many investigations should be made upon it (Susumu et al 1996) [1]. So In the present research, a new type of composite section was developed; this section is completely different from the composite sections studied in previous research.…”

Section: Introductionmentioning

confidence: 93%

Flexural Performance of Composite Ultra-High-Performance Concrete-Encased Steel Hollow Beams

Tu’ma

Aziz

2019

Civ Eng J

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Composite members have been widely used in the construction of medium- and high-rise buildings. The results of the development of a new structural member by experimental investigation of the flexural behavior of hollow composite beams are presented in this paper. This research aims to exploit the properties of composite sections and their strength in developing a new approach for overcoming the problems of service pipes in buildings. A hollow steel section encased fully in concrete is used to form a composite hollow beam. The structural benefit provided by the steel section (composite part) is adopted to increase the stiffness of the member. The hollow part is employed to provide services and economic benefits by reducing the amount of expensive ultra-high-performance concrete (UHPC) used and decreasing the self-weight of the member. The flexural strength of 11 UHPC beams is tested under two-point loads. The variables in this investigation include the type of hollow core mold material and the size, location, and shape of steel hollow sections in the middle and tension zones of the cross-section. Experimental results are compared and discussed. The tested results show that the flexural capacity and stiffness of the UHPC-encased steel hollow beams are 109% and 23.5% higher than those solid beams, respectively.

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Structural Materials. Flexural and Shear Behavior of Reinforced Concrete Beams Damaged by Alkali-Silica Reaction under Reversed Cyclic Loads.

Cited by 5 publications

References 0 publications

Analytical prediction of tension force on stirrups in concrete beams longitudinally reinforced with CFRP bars

Analytical prediction of tension force on stirrups in concrete beams longitudinally reinforced with CFRP bars

The Development of Finite Element Model to Investigate the Structural Performance of Reinforced Concrete Hollow Beams

Flexural Performance of Composite Ultra-High-Performance Concrete-Encased Steel Hollow Beams

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