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Deformation ability of precast concrete columns reinforced with steel-FRP composite bars (SFCBs) based on the DIC method by Zeyang Sun; Yi Zheng; Yunlou Sun; Xinxing Shao; Gang Wu is a Engineering article available to read on EtoBox.

What is Deformation ability of precast concrete columns reinforced with steel-FRP composite bars (SFCBs) based on the DIC method about?

A steel-fiber reinforced polymer (FRP) composite bar (SFCB) is a novel reinforcement composed of an inner steel bar and outer continuous FRP. Moreover, SFCBs have excellent corrosion resistance and stable positive post-yield stiffness and can be used to control structural damage. However, the relatively small fracture strain of the outer FRP may limit the deformation ability of the concrete members reinforced with SFCBs. Bundled reinforcement can weaken the interfacial adhesion to improve the structural deformation capacity and reduce the connections of the reinforced precast structures to enhance the construction efficiency and quality. In this paper, a quasistatic test of six concrete columns was conducted, and the deformation of the column foot was observed by the digital image correlation (DIC) method to investigate the effects of the reinforcement type (steel bar and SFCB), the number of bars in each bundle (1, 2, and 3), and the construction method (cast-in-place, general precast, and precast with full-length grouting) on the deformation capacity. The crack spacing of the precast concrete column reinforced with single-bar SFCBs increased by approximately 10% compared to the p

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Author

Zeyang Sun; Yi Zheng; Yunlou Sun; Xinxing Shao; Gang Wu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)