Analytical Model for Concrete Confinement in Tied Columns

RETRACTED: Nonlinear vibration of structural deterioration in reinforced concrete columns: experimental and theoretical investigation

“…T E D Liu et al, 2008;Li et al, 2008;Su et al, 2008;Tsai et al, 2008;Yang et al, 2008;Yeh et al, 2008;Lei and Chien, 2009;Lin et al, 2009;Tsai and Chen, 2009; Lin and Chen, 2010). Actually, the stress-strain characteristics of confined concrete have been the subject of much study (Sheikh and Uzumeri, 1982;Kent and Park, 1971). New types of hoops are under development to enhance columnar strength (Shibata et al, 1992;Mo and Wang, 2000).…”

Investigating Optimal Confinement Behaviour of Low-Strength Concrete through Quantitative and Analytical Approaches

“…Manders et al, 1988 [ 21 ], proposed a model based on the same concept put forwarded by Shiekh and Uzumeri (1982) [ 55 ]. As the confining lateral pressure was based on the cross section’s geometry, this model was suitable for any cross-section [ 54 ].…”

“…Numerous features affect the confinement pressure, such as ties spacing/the distance of the connections, the yield strength/flow resistance of the longitudinal bar, the longitudinal bar’s size, and the nature of transverse reinforcement. Several analytical models were proposed to predict axial capacity and ductility of confined NSC and HSC columns [ 21 , 53 , 54 , 55 ]. However, there is a lack of research on the analytical models for low-strength concrete confinement behaviour.…”

Axial Compressive Strength Models of Eccentrically-Loaded Rectangular Reinforced Concrete Columns Confined with FRP

“…where f yh and f yl (MPa) are the yield strengths of hoop and longitudinal steel reinforcement, respectively; the coefficient k es is used to quantify the effective confinement induced by the steel hoops in the lateral and vertical directions. This coefficient can be calculated by using the following expression originally developed by Sheikh and Uzumeri [69], in which c x and c y (mm) are the concrete core dimensions to the centerline of the peripheral hoop reinforcement (Figure 8), and herein replaced by dxy = √ b 2 − h 2 (mm); s (mm) = clear spacing between the steel hoops; ρ cc is the ratio of the longitudinal reinforcement area divided by the area of the inner concrete core (ρ cc = A s /c x × c y ).…”