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.

• 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