Effectiveness of rectangular ties as confinement steel in reinforced concrete columns
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Effectiveness of rectangular ties as confinement steel in reinforced concrete columns

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Published by s.n.] in [Toronto .
Written in English

Subjects:

  • Columns, Concrete,
  • Reinforced concrete construction,
  • Reinforcing bars

Book details:

Edition Notes

Statementby Shamin Ahmed Sheikh.
ContributionsToronto, Ont. University.
The Physical Object
Pagination256 leaves :
Number of Pages256
ID Numbers
Open LibraryOL18948005M

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Traditional steel ties reinforcement cannot provide superior confinement for reinforced concrete (RC) columns due to the constraints on tie spacing and disturbance of concrete continuity. This paper presents a practical confinement configuration consisting of single Expanded Metal Mesh (EMM) layer in additional to regular tie clic-clelia.com by: 6. May 25,  · The effect is studied of steel fibres on the confinement in a reinforced concrete column subjected to high axial load, and, in turn, on the peak load and the corresponding strain and ductility. 14 short columns with and without steel fibres were tested. The main variables in the study were the volume fraction and the aspect ratio of the steel clic-clelia.com by: 4. EXPERIMENTAL PROGRAM FOR REINFORCED CONCRETE RECTANGULAR COLUMNS CONFINED BY RECTANGULAR TIES Steel The longitudinal reinforcement used was 10 mm, 12mm and 18 mm diameter deformed bars. Three different grades and sizes of reinforcing steel were used as lateral reinforcement. TheAuthor: Mohamed Abdelzaher Mohamed Shanan, Ahmed Ragaey Hasan Anis, Ashraf Hasan El-Zanati, Kamal Ghamry Met. Short in. ( mm) square concrete columns with rectangular ties as confinement steel are tested under monotonic axial compression to failure. Land-deformation curves are presented.

Traditional steel ties reinforcement cannot provide superior confinement for reinforced concrete (RC) columns due to the constraints on tie spacing and disturbance of concrete continuity. This paper presents a practical confinement configuration consisting of single Expanded Metal Mesh (EMM) layer in additional to regular tie reinforcement. This paper presents an analytical study of the confinement effectiveness in circular concrete columns confined by transverse reinforcement. The analytical derivation includes several stages. The first stage includes the solution to the passive confinement problem of a linear elastic cylinder. The study on the effects of rectangular transverse re­ inforcement in reinforced concrete columns traces back to the work by King The main purpose of the study was to establish a formula for ultimate strength of reinforced concrete columns with single square hoops. No attention was paid to column ductility. effective conning pressure or ratio of concrete strength to tie strength, axial load level, unconned cover concrete thickness, longitudinal reinforcement and spacing, and curvature ductility factor. Some detailing of these reinforcements is also discussed. Reinforced concrete columns are the main load bearing elements of any clic-clelia.com by: 6.

Short in. ( mm) square concrete columns with rectangular ties as confinement steel are tested under monotonic axial compression to failure. Land-deformation curves are presented. Contribution of concrete to load carrying capacity and the significance of cover spalling are examined. This paper presents an experimental study of the behavior of large‐scale high‐strength concrete columns confined by rectangular ties under concentric loading. Effects of key variables such as the concrete compressive strength, the tie yield strength, the tie configuration, the transverse reinforcement ratio, the tie spacing, the longitudinal reinforcement ratio, and the spalling of the concrete cover . Confinement Model for Rectangular Reinforced Concrete Columns Ahmed Al-Rahmani 1,* and Hayder Rasheed 2 Stress-strain model proposed for concrete confined with steel ties. As stated earlier, effective lateral pressures were employed in this model. This approach was similar to the one used by Sheikh and Uzumeri [14]. Arching action leads Cited by: 2. FRP wrapping of concrete columns is done to enhance the ultimate strength due to the confinement effect, which is normally induced by steel ties. The existence of the two confinement systems changes the nature of the problem, thus necessitating specialized nonlinear analysis to Cited by: 2.