Study on Crack Width and Crack Resistance of Eccentrically Tensioned Steel-Reinforced Concrete Members Prestressed by CFRP Tendons

Deng, Yu; Gui, Jinyang; Zhang, Hexin; Taliercio, Alberto; Zhang, Peng; Wong, Simon H F; Sukontasukkul, Piti; Khan, Afrasyab; Li, Lin; Tang, Yunchao; Chen, Xingyu

Abstract

In recent decades, steel-reinforced concrete (SRC) members under eccentrical tension have been adopted more frequently in modern buildings due to the constraints of more complex structural design/detailing that accompanying contemporary architectural creations. Crack resistance of this type of structures has become a critical design consideration but received insufficient research attention in the past. In this context, the anti-cracking performance of prestressed SRC columns reinforced with CFRP tendons under eccentric tensile loads is investigated experimentally and analytically with the following first-hand experimental validations: 1) prestressed CFRP tendons can well strengthen SRC columns under eccentric tensile load and restrain the crack propagation; 2) an increase in the load eccentricity progressively weakened the influence of prestressing tension level on the cracking load; 3) specimens with the higher prestressed tension level, larger longitudinal reinforcement diameter, and flange thickness exhibited greater crack resistance capacity. Furthermore, the plane-section assumption was also validated in this study. A test data-enhanced analytical method was proposed for determining the cracking load of PSRC columns.

Citation

Deng, Y., Gui, J., Zhang, H., Taliercio, A., Zhang, P., Wong, S. H. F., Sukontasukkul, P., Khan, A., Li, L., Tang, Y., & Chen, X. (2022). Study on Crack Width and Crack Resistance of Eccentrically Tensioned Steel-Reinforced Concrete Members Prestressed by CFRP Tendons. Engineering Structures, 252, Article 113651. https://doi.org/10.1016/j.engstruct.2021.113651

• Journal Article Type: Article
• Acceptance Date: Nov 25, 2021
• Online Publication Date: Dec 1, 2021
• Publication Date: 2022-02
• Deposit Date: Nov 25, 2021
• Publicly Available Date: Dec 2, 2022
• Print ISSN: 0141-0296
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 252
• Article Number: 113651
• DOI: https://doi.org/10.1016/j.engstruct.2021.113651
• Keywords: steel-reinforced concrete; crack resistance; eccentric tension; bonded prestressed CFRP tendon; prestressed steel-reinforced concrete
• Public URL: http://researchrepository.napier.ac.uk/Output/2824538