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Effects of confinement in square hollow concrete column sections
Highlights Confinement effect is illustrated using concrete dilation and confining pressure. The confinement effect in solid and hollow sections are different. Two layers of reinforcement and cross-ties provide the best confinement effect. Wall thickness and confinement amount does not affect confinement effect greatly.
Abstract Hollow concrete bridge columns have been frequently used in tall and long-span bridge construction due to their effective section properties and reduced weight. However, they are not widely used in seismic regions because the understanding of confinement effect in hollow concrete columns is quite limited. To improve the understanding of confinement effect in square hollow concrete columns, this paper presents a systematic computational study using the confinement configuration, wall thickness, and confinement reinforcement amount as the primary investigated parameters. The computational results show that two layers of transverse reinforcement connected with cross-ties provide the best confinement effect for square hollow concrete columns. In addition, both wall thickness and confinement reinforcement amount are found to not significantly affect the confinement effect in square hollow concrete columns with a wall thickness ratio in the range of 0.1–0.2 and confined with a single layer of reinforcement.
Effects of confinement in square hollow concrete column sections
Highlights Confinement effect is illustrated using concrete dilation and confining pressure. The confinement effect in solid and hollow sections are different. Two layers of reinforcement and cross-ties provide the best confinement effect. Wall thickness and confinement amount does not affect confinement effect greatly.
Abstract Hollow concrete bridge columns have been frequently used in tall and long-span bridge construction due to their effective section properties and reduced weight. However, they are not widely used in seismic regions because the understanding of confinement effect in hollow concrete columns is quite limited. To improve the understanding of confinement effect in square hollow concrete columns, this paper presents a systematic computational study using the confinement configuration, wall thickness, and confinement reinforcement amount as the primary investigated parameters. The computational results show that two layers of transverse reinforcement connected with cross-ties provide the best confinement effect for square hollow concrete columns. In addition, both wall thickness and confinement reinforcement amount are found to not significantly affect the confinement effect in square hollow concrete columns with a wall thickness ratio in the range of 0.1–0.2 and confined with a single layer of reinforcement.
Effects of confinement in square hollow concrete column sections
Liang, Xiao (author) / Sritharan, Sri (author)
Engineering Structures ; 191 ; 526-535
2019-04-13
10 pages
Article (Journal)
Electronic Resource
English
Seismic , Square , Hollow , Concrete , Column , Confinement , FE Modeling