An Evaluation Model of Ductility Capacity of Reinforced Concrete Bridge Piers Confined With Carbon Fiber Sheet

Hosotani, Manabu; Kawashima, Koichiro; Uji, Kimitaka

doi:10.2208/jscej.2000.648_137

Cited by 17 publications

(1 citation statement)

References 4 publications

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“…Later, Xiao et al [31] used the results of 243 concrete cylinders with 9 different fiber reinforced plastics to propose a confined concrete constitutive model. Meanwhile, Karabinis and Rousakis [11] used low ratio CFRP to replace the steel reinforcement, and found that the strength and ductility of confined concrete can be increased. Most recently, Amir et al [1] proposed a confinement model for concrete confined by FRP tubes which can effectively predict the axial compressive stress.…”

Section: Constitutive Model For Confined Concretementioning

confidence: 99%

A Study on the Shear-Failure of Circular Sectioned Bridge Column Retrofitted by Using CFRP Jacketing

Sung

2004

Journal of Reinforced Plastics and Composites

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In this paper, analytical and experimental studies on the shear-failure and confinement of circular section RC bridge columns retrofitted by carbon fiber reinforced plastic (CFRP) jacketing were performed. An effective confined concrete constitutive model named Modified L-L Model proposed by Li et al. (Li, Y.-F., Lin, C.-T. and Sung, Y.-Y. (2003). A Constitutive Model for Concrete Confined with Carbon Fiber Reinforced Plastics, Mechanics of Materials, 35:603–619.) is introduced and used to determine the thickness of CFRP for retrofitting bridge columns, and to analyze the lateral force–displacement relationship of circular sectioned bridge columns. In the Modified L-L Model, the lateral confinement of the concrete comes from both steel reinforcement and CFRP composite material. Three 40%-scale bridge columns with shear-failure mode were tested under cyclic loading at the National Center for Research on Earthquake Engineering (NCREE). The analytical lateral force–lateral displacement relationship of bridge columns using the Modified L-L Model can predict the lateral force–lateral displacement relationship of experimental result very well, and the prediction shows that the Modified L-L Model can be used in seismic retrofit analysis. In the meantime, the performance of retrofitted bridge columns can be greatly improved by using CFRP composite material.

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Section: Constitutive Model For Confined Concretementioning

confidence: 99%

A Study on the Shear-Failure of Circular Sectioned Bridge Column Retrofitted by Using CFRP Jacketing

Sung

2004

Journal of Reinforced Plastics and Composites

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Confinement of RC Elements by Means of EBR FRP Systems

Pantazopoulou

Balafas

Bournas

et al. 2015

Design Procedures for the Use of Composites in Strengthening of Reinforced Concrete Structures

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This chapter reviews the issues of confinement in plain and reinforced concrete under concentric compression and summarizes the state of the art regarding the available confinement models for strength and stress-strain behaviour of encased confined concrete, and the corresponding magnitude of dependable strain capacity. The mechanisms of confinement failure, the evolution of Poissons’ effects under low and high confinement, and the ensuing material compaction at high confining pressures (plastification) are discussed. The effects of stress concentrations near corners, the effectiveness of layers and influence of adhesive, other scale effects and the influence of specimen morphology on mechanical behaviour are also outlined. Next, the chapter concentrates on the effects of embedded reinforcement both longitudinal and transverse. Confinement effectiveness in the presence of combined flexure and shear (in plastic hinge regions), local effects due to rotation capacity increase, and effects of FRP confinement on overall member behaviour are discussed. Shape effects that occur in hollow or oblong sections are also considered. Furthermore, the chapter gives an outline regarding the characteristics of the international database of tests for confinement, and its calibration with the database of the available confinement models including those included in the design standards (ACI, CNR and EC8-III)

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Predicting ultimate strength of FRP and lateral steel confined circular concrete columns using Artificial Neural Networks

2020

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An Evaluation Model of Ductility Capacity of Reinforced Concrete Bridge Piers Confined With Carbon Fiber Sheet

Cited by 17 publications

References 4 publications

A Study on the Shear-Failure of Circular Sectioned Bridge Column Retrofitted by Using CFRP Jacketing

A Study on the Shear-Failure of Circular Sectioned Bridge Column Retrofitted by Using CFRP Jacketing

Confinement of RC Elements by Means of EBR FRP Systems

Predicting ultimate strength of FRP and lateral steel confined circular concrete columns using Artificial Neural Networks

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